do ass1submission-p1.0

1 files changed, 727 insertions, 727 deletions

diff --git a/dev/MinGfx/src/quick_shapes.cc b/dev/MinGfx/src/quick_shapes.cc
index 388aa3d..dbd6c9e 100644
--- a/dev/MinGfx/src/quick_shapes.cc
+++ b/dev/MinGfx/src/quick_shapes.cc
@@ -1,727 +1,727 @@
-/*
- Copyright (c) 2017,2018 Regents of the University of Minnesota.
- All Rights Reserved.
- See corresponding header file for details.
- */
-
-#include "quick_shapes.h"
-#include "platform.h"
-
-#include <cmath>
-#include <iostream>
-#include <string>
-
-
-namespace mingfx {
-    
-    
-    
-#define PI 3.14159265359f
-#define TWOPI 6.28318530718f
-    
-    
-    
-// Helper datastructure for building shapes algorithmically
-class Vertex {
-public:
-    Vertex(GLfloat xx, GLfloat yy, GLfloat zz, GLfloat nnx, GLfloat nny, GLfloat nnz) :
-    x(xx), y(yy), z(zz), nx(nnx), ny(nny), nz(nnz) {}
-    
-    GLfloat x;
-    GLfloat y;
-    GLfloat z;
-    GLfloat nx;
-    GLfloat ny;
-    GLfloat nz;
-};
-
-    
-    
-    
-QuickShapes::QuickShapes() {
-}
-
-QuickShapes::~QuickShapes() {
-}
-    
-    
-    
-    
-// ------------  CUBE  ------------
-
-
-void QuickShapes::initCube() {
-    GLfloat vertices[]  = {
-        1.0f, 1.0f, 1.0f,  -1.0f, 1.0f, 1.0f,  -1.0f,-1.0f, 1.0f,      // v0-v1-v2 (front)
-        -1.0f,-1.0f, 1.0f,   1.0f,-1.0f, 1.0f,   1.0f, 1.0f, 1.0f,      // v2-v3-v0
-        
-        1.0f, 1.0f, 1.0f,   1.0f,-1.0f, 1.0f,   1.0f,-1.0f,-1.0f,      // v0-v3-v4 (right)
-        1.0f,-1.0f,-1.0f,   1.0f, 1.0f,-1.0f,   1.0f, 1.0f, 1.0f,      // v4-v5-v0
-        
-        1.0f, 1.0f, 1.0f,   1.0f, 1.0f,-1.0f,  -1.0f, 1.0f,-1.0f,      // v0-v5-v6 (top)
-        -1.0f, 1.0f,-1.0f,  -1.0f, 1.0f, 1.0f,   1.0f, 1.0f, 1.0f,      // v6-v1-v0
-        
-        -1.0f, 1.0f, 1.0f,  -1.0f, 1.0f,-1.0f,  -1.0f,-1.0f,-1.0f,      // v1-v6-v7 (left)
-        -1.0f,-1.0f,-1.0f,  -1.0f,-1.0f, 1.0f,  -1.0f, 1.0f, 1.0f,      // v7-v2-v1.0
-        
-        -1.0f,-1.0f,-1.0f,   1.0f,-1.0f,-1.0f,   1.0f,-1.0f, 1.0f,      // v7-v4-v3 (bottom)
-        1.0f,-1.0f, 1.0f,  -1.0f,-1.0f, 1.0f,  -1.0f,-1.0f,-1.0f,      // v3-v2-v7
-        
-        1.0f,-1.0f,-1.0f,  -1.0f,-1.0f,-1.0f,  -1.0f, 1.0f,-1.0f,      // v4-v7-v6 (back)
-        -1.0f, 1.0f,-1.0f,   1.0f, 1.0f,-1.0f,   1.0f,-1.0f,-1.0f       // v6-v5-v4
-    };
-    
-    GLfloat normals[]   = {
-        0, 0, 1,   0, 0, 1,   0, 0, 1,      // v0-v1-v2 (front)
-        0, 0, 1,   0, 0, 1,   0, 0, 1,      // v2-v3-v0
-        
-        1, 0, 0,   1, 0, 0,   1, 0, 0,      // v0-v3-v4 (right)
-        1, 0, 0,   1, 0, 0,   1, 0, 0,      // v4-v5-v0
-        
-        0, 1, 0,   0, 1, 0,   0, 1, 0,      // v0-v5-v6 (top)
-        0, 1, 0,   0, 1, 0,   0, 1, 0,      // v6-v1-v0
-        
-        -1, 0, 0,  -1, 0, 0,  -1, 0, 0,     // v1-v6-v7 (left)
-        -1, 0, 0,  -1, 0, 0,  -1, 0, 0,     // v7-v2-v1
-        
-        0,-1, 0,   0,-1, 0,   0,-1, 0,      // v7-v4-v3 (bottom)
-        0,-1, 0,   0,-1, 0,   0,-1, 0,      // v3-v2-v7
-        
-        0, 0,-1,   0, 0,-1,   0, 0,-1,      // v4-v7-v6 (back)
-        0, 0,-1,   0, 0,-1,   0, 0,-1       // v6-v5-v4
-    };
-    
-    cubeMesh_.SetVertices(vertices, 36);
-    cubeMesh_.SetNormals(normals, 36);
-    cubeMesh_.UpdateGPUMemory();
-}
-
-
-void QuickShapes::DrawCube(const Matrix4 &modelMatrix, const Matrix4 &viewMatrix,
-                const Matrix4 &projectionMatrix, const Color &color)
-{
-    if (cubeMesh_.num_vertices() == 0) {
-        initCube();
-    }
-    defaultMaterial_.ambient_reflectance = color;
-    defaultMaterial_.diffuse_reflectance = color;
-    defaultMaterial_.surface_texture = emptyTex_;
-    defaultShader_.Draw(modelMatrix, viewMatrix, projectionMatrix, &cubeMesh_, defaultMaterial_);
-}
-
-
-
-
-// ------------  SQUARE  ------------
-
-
-void QuickShapes::initSquare() {
-    GLfloat vertices[] = {
-        1.0f, 0.0f, 1.0f,   1.0f, 0.0f,-1.0f,  -1.0f, 0.0f,-1.0f,      // v0-v5-v6 (top)
-        -1.0f, 0.0f,-1.0f,  -1.0f, 0.0f, 1.0f,   1.0f, 0.0f, 1.0f      // v6-v1-v0
-    };
-    
-    GLfloat normals[] = {
-        0, 1, 0,   0, 1, 0,   0, 1, 0,
-        0, 1, 0,   0, 1, 0,   0, 1, 0
-    };
-    
-    GLfloat texcoords[] = {
-        1.0f, 1.0f,   1.0f, 0.0f,   0.0f, 0.0f,
-        0.0f, 0.0f,   0.0f, 1.0f,   1.0f, 1.0f
-    };
-    
-    squareMesh_.SetVertices(vertices, 6);
-    squareMesh_.SetNormals(normals, 6);
-    squareMesh_.SetTexCoords(0, texcoords, 6);
-    squareMesh_.UpdateGPUMemory();
-}
-
-
-void QuickShapes::DrawSquare(const Matrix4 &modelMatrix, const Matrix4 &viewMatrix,
-                  const Matrix4 &projectionMatrix, const Color &color)
-{
-    if (squareMesh_.num_vertices() == 0) {
-        initSquare();
-    }
-    defaultMaterial_.ambient_reflectance = color;
-    defaultMaterial_.diffuse_reflectance = color;
-    defaultMaterial_.surface_texture = emptyTex_;
-    defaultShader_.Draw(modelMatrix, viewMatrix, projectionMatrix, &squareMesh_, defaultMaterial_);
-}
-    
-
-void QuickShapes::DrawSquare(const Matrix4 &modelMatrix, const Matrix4 &viewMatrix,
-                  const Matrix4 &projectionMatrix, const Color &color,
-                  const Texture2D &tex)
-{
-    if (squareMesh_.num_vertices() == 0) {
-        initSquare();
-    }
-    defaultMaterial_.ambient_reflectance = color;
-    defaultMaterial_.diffuse_reflectance = color;
-    defaultMaterial_.surface_texture = tex;
-    defaultShader_.Draw(modelMatrix, viewMatrix, projectionMatrix, &squareMesh_, defaultMaterial_);
-}
-    
-    
-    
-
-
-// ------------  CYLINDER  ------------
-
-
-void QuickShapes::initCyl() {
-    
-    std::vector<Vertex> verts;
-    
-    Vertex top(0,1,0, 0,1,0);
-    Vertex bot(0,-1,0, 0,-1,0);
-    
-    const int nslices = 20;
-    for (int s=1; s<nslices+1; s++) {
-        int slast = s - 1;
-        GLfloat xlast = std::cosf(-TWOPI * (float)slast / (float)nslices);
-        GLfloat zlast = std::sinf(-TWOPI * (float)slast/(float)nslices);
-        GLfloat xnew = std::cosf(-TWOPI * (float)(s)/(float)nslices);
-        GLfloat znew = std::sinf(-TWOPI * (float)(s)/(float)nslices);
-        
-        // one triangle on the top
-        verts.push_back(top);
-        verts.push_back(Vertex(xlast,1,zlast, 0,1,0));
-        verts.push_back(Vertex(xnew,1,znew, 0,1,0));
-        
-        // two triangles to create a rect on the side
-        verts.push_back(Vertex(xlast,1,zlast, xlast,0,zlast));
-        verts.push_back(Vertex(xlast,-1,zlast, xlast,0,zlast));
-        verts.push_back(Vertex(xnew,1,znew, xnew,0,znew));
-        
-        verts.push_back(Vertex(xnew,-1,znew, xnew,0,znew));
-        verts.push_back(Vertex(xnew,1,znew, xnew,0,znew));
-        verts.push_back(Vertex(xlast,-1,zlast, xlast,0,zlast));
-        
-        // one triangle on the bottom
-        verts.push_back(bot);
-        verts.push_back(Vertex(xnew,-1,znew, 0,-1,0));
-        verts.push_back(Vertex(xlast,-1,zlast, 0,-1,0));
-    }
-    
-    std::vector<Point3> vertices;
-    std::vector<Vector3> normals;
-    for (int i=0; i<verts.size(); i++) {
-        vertices.push_back(Point3(verts[i].x, verts[i].y, verts[i].z));
-        normals.push_back(Vector3(verts[i].nx, verts[i].ny, verts[i].nz));
-    }    
-    cylMesh_.SetVertices(vertices);
-    cylMesh_.SetNormals(normals);
-    cylMesh_.UpdateGPUMemory();
-}
-
-
-void QuickShapes::DrawCylinder(const Matrix4 &modelMatrix, const Matrix4 &viewMatrix,
-                    const Matrix4 &projectionMatrix, const Color &color)
-{
-    if (cylMesh_.num_vertices() == 0) {
-        initCyl();
-    }
-    defaultMaterial_.ambient_reflectance = color;
-    defaultMaterial_.diffuse_reflectance = color;
-    defaultMaterial_.surface_texture = emptyTex_;
-    defaultShader_.Draw(modelMatrix, viewMatrix, projectionMatrix, &cylMesh_, defaultMaterial_);
-}
-
-
-
-
-// ------------  CONE  ------------
-
-
-void QuickShapes::initCone() {
-    
-    std::vector<Vertex> verts;
-    
-    Vertex top(0,1,0, 0,1,0);
-    Vertex bot(0,-1,0, 0,-1,0);
-    
-    const int nslices = 20;
-    for (int s=1; s<nslices+1; s++) {
-        int slast = s - 1;
-        GLfloat xlast = std::cosf(-TWOPI * (float)slast/(float)nslices);
-        GLfloat zlast = std::sinf(-TWOPI * (float)slast/(float)nslices);
-        GLfloat xnew = std::cosf(-TWOPI * (float)(s)/(float)nslices);
-        GLfloat znew = std::sinf(-TWOPI * (float)(s)/(float)nslices);
-        
-        // one triangle on the side
-        // normals are a bit more complex than for other shapes...
-        Vector3 nlast = Vector3(xlast, 2, zlast).ToUnit();
-        Vector3 nnew = Vector3(xnew, 2, znew).ToUnit();
-        Vector3 ntop = 0.5*(nlast + nnew);
-        
-        verts.push_back(Vertex(top.x, top.y, top.z, ntop[0], ntop[1], ntop[2]));
-        verts.push_back(Vertex(xlast,-1,zlast, nlast[0], nlast[1], nlast[2]));
-        verts.push_back(Vertex(xnew,-1,znew, nnew[0], nnew[1], nnew[2]));
-        
-        // one triangle on the bottom
-        verts.push_back(bot);
-        verts.push_back(Vertex(xnew,-1,znew, 0,-1,0));
-        verts.push_back(Vertex(xlast,-1,zlast, 0,-1,0));
-    }
-    
-    std::vector<Point3> vertices;
-    std::vector<Vector3> normals;
-    for (int i = 0; i < verts.size(); i++) {
-        vertices.push_back(Point3(verts[i].x, verts[i].y, verts[i].z));
-        normals.push_back(Vector3(verts[i].nx, verts[i].ny, verts[i].nz));
-    }
-    
-    coneMesh_.SetVertices(vertices);
-    coneMesh_.SetNormals(normals);
-    coneMesh_.UpdateGPUMemory();
-}
-
-
-void QuickShapes::DrawCone(const Matrix4 &modelMatrix, const Matrix4 &viewMatrix,
-                const Matrix4 &projectionMatrix, const Color &color)
-{
-    if (coneMesh_.num_vertices() == 0) {
-        initCone();
-    }
-    defaultMaterial_.ambient_reflectance = color;
-    defaultMaterial_.diffuse_reflectance = color;
-    defaultMaterial_.surface_texture = emptyTex_;
-    defaultShader_.Draw(modelMatrix, viewMatrix, projectionMatrix, &coneMesh_, defaultMaterial_);
-}
-
-
-
-
-
-// ------------  SPHERE  ------------
-
-
-void QuickShapes::initSph() {
-    
-    std::vector<Vertex> verts;
-    
-    Vertex top(0,1,0, 0,1,0);
-    Vertex bot(0,-1,0, 0,-1,0);
-    
-    const int nslices = 40;
-    const int nstacks = 40;
-    for (int s=1; s<nslices+1; s++) {
-        int slast = s - 1;
-        GLfloat xlast = std::cosf(-TWOPI * (float)slast/(float)nslices);
-        GLfloat zlast = std::sinf(-TWOPI * (float)slast/(float)nslices);
-        GLfloat xnew = std::cosf(-TWOPI * (float)(s)/(float)nslices);
-        GLfloat znew = std::sinf(-TWOPI * (float)(s)/(float)nslices);
-        
-        float stackstep = PI/(float)nstacks;
-        
-        // one triangle on the top
-        verts.push_back(top);
-        verts.push_back(Vertex(std::sinf(stackstep)*xlast,std::cosf(stackstep),std::sinf(stackstep)*zlast,
-                               std::sinf(stackstep)*xlast,std::cosf(stackstep),std::sinf(stackstep)*zlast));
-        verts.push_back(Vertex(std::sinf(stackstep)*xnew,std::cosf(stackstep),std::sinf(stackstep)*znew,
-                               std::sinf(stackstep)*xnew,std::cosf(stackstep),std::sinf(stackstep)*znew));
-        
-        for (int t=2; t<nstacks; t++) {
-            int tlast = t - 1;
-            GLfloat ylast = std::cosf(PI*(float)(tlast)/(float)nstacks);
-            GLfloat ynew = std::cosf(PI*(float)(t)/(float)nstacks);
-            
-            GLfloat rlast = std::sinf(PI * (float)(tlast)/(float)nstacks);
-            GLfloat rnew = std::sinf(PI * (float)(t)/(float)nstacks);
-            
-            // two triangles to create a rect on the side
-            verts.push_back(Vertex(rlast*xlast,ylast,rlast*zlast, rlast*xlast,ylast,rlast*zlast));
-            verts.push_back(Vertex(rnew*xlast,ynew,rnew*zlast, rnew*xlast,ynew,rnew*zlast));
-            verts.push_back(Vertex(rnew*xnew,ynew,rnew*znew, rnew*xnew,ynew,rnew*znew));
-            
-            verts.push_back(Vertex(rnew*xnew,ynew,rnew*znew, rnew*xnew,ynew,rnew*znew));
-            verts.push_back(Vertex(rlast*xnew,ylast,rlast*znew, rlast*xnew,ylast,rlast*znew));
-            verts.push_back(Vertex(rlast*xlast,ylast,rlast*zlast, rlast*xlast,ylast,rlast*zlast));
-        }
-        
-        // one triangle on the bottom
-        verts.push_back(bot);
-        verts.push_back(Vertex(std::sinf(stackstep)*xnew,std::cosf(PI-stackstep),std::sinf(stackstep)*znew,
-                               std::sinf(stackstep)*xnew,std::cosf(PI-stackstep),std::sinf(stackstep)*znew));
-        verts.push_back(Vertex(std::sinf(stackstep)*xlast,std::cosf(PI-stackstep),std::sinf(stackstep)*zlast,
-                               std::sinf(stackstep)*xlast,std::cosf(PI-stackstep),std::sinf(stackstep)*zlast));
-    }
-    
-    std::vector<Point3> vertices;
-    std::vector<Vector3> normals;
-    for (int i = 0; i < verts.size(); i++) {
-        vertices.push_back(Point3(verts[i].x, verts[i].y, verts[i].z));
-        normals.push_back(Vector3(verts[i].nx, verts[i].ny, verts[i].nz));
-    }
-    sphereMesh_.SetVertices(vertices);
-    sphereMesh_.SetNormals(normals);
-    sphereMesh_.UpdateGPUMemory();
-}
-
-
-void QuickShapes::DrawSphere(const Matrix4 &modelMatrix, const Matrix4 &viewMatrix,
-                  const Matrix4 &projectionMatrix, const Color &color)
-{
-    if (sphereMesh_.num_vertices() == 0) {
-        initSph();
-    }
-    defaultMaterial_.ambient_reflectance = color;
-    defaultMaterial_.diffuse_reflectance = color;
-    defaultMaterial_.surface_texture = emptyTex_;
-    defaultShader_.Draw(modelMatrix, viewMatrix, projectionMatrix, &sphereMesh_, defaultMaterial_);
-}
-
-
-
-
-// ------------  BRUSH  ------------
-
-
-void QuickShapes::initBrush() {
-    
-    // Raw vertices -- points that make up the brush geometry
-    const GLfloat v[19][3] = {
-        { 0.5f,   0.0f,   0.0f},  // 0
-        {-0.5f,   0.0f,   0.0f},  // 1
-        
-        { 0.5f,   0.1f,   0.25f}, // 2
-        {-0.5f,   0.1f,   0.25f}, // 3
-        { 0.5f,   0.1f,   0.75f}, // 4
-        {-0.5f,   0.1f,   0.75f}, // 5
-        { 0.1f,   0.06f,  1.0f},  // 6
-        {-0.1f,   0.06f,  1.0f},  // 7
-        { 0.15f,  0.1f,   1.75f}, // 8
-        {-0.15f,  0.1f,   1.75f}, // 9
-        
-        { 0.0f,   0.0f,   1.85f}, // 10
-        
-        { 0.5f,  -0.1f,   0.25f}, // 11
-        {-0.5f,  -0.1f,   0.25f}, // 12
-        { 0.5f,  -0.1f,   0.75f}, // 13
-        {-0.5f,  -0.1f,   0.75f}, // 14
-        { 0.1f,  -0.06f,  1.0f},  // 15
-        {-0.1f,  -0.06f,  1.0f},  // 16
-        { 0.15f, -0.1f,   1.75f}, // 17
-        {-0.15f, -0.1f,   1.75f}  // 18
-    };
-    
-    
-    // Vertices arranged into triangles
-    const GLfloat verts[34][3][3] = {
-        // top
-        {{v[0][0], v[0][1], v[0][2]},  {v[1][0], v[1][1], v[1][2]},  {v[2][0], v[2][1], v[2][2]}},
-        {{v[1][0], v[1][1], v[1][2]},  {v[3][0], v[3][1], v[3][2]},  {v[2][0], v[2][1], v[2][2]}},
-        
-        {{v[2][0], v[2][1], v[2][2]},  {v[3][0], v[3][1], v[3][2]},  {v[4][0], v[4][1], v[4][2]}},
-        {{v[3][0], v[3][1], v[3][2]},  {v[5][0], v[5][1], v[5][2]},  {v[4][0], v[4][1], v[4][2]}},
-        
-        {{v[4][0], v[4][1], v[4][2]},  {v[5][0], v[5][1], v[5][2]},  {v[6][0], v[6][1], v[6][2]}},
-        {{v[5][0], v[5][1], v[5][2]},  {v[7][0], v[7][1], v[7][2]},  {v[6][0], v[6][1], v[6][2]}},
-        
-        {{v[6][0], v[6][1], v[6][2]},  {v[7][0], v[7][1], v[7][2]},  {v[8][0], v[8][1], v[8][2]}},
-        {{v[7][0], v[7][1], v[7][2]},  {v[9][0], v[9][1], v[9][2]},  {v[8][0], v[8][1], v[8][2]}},
-        
-        {{v[8][0], v[8][1], v[8][2]},  {v[9][0], v[9][1], v[9][2]},  {v[10][0], v[10][1], v[10][2]}},
-        
-        // bottom
-        {{v[0][0], v[0][1], v[0][2]},  {v[12][0], v[12][1], v[12][2]},  {v[1][0], v[1][1], v[1][2]}},
-        {{v[11][0], v[11][1], v[11][2]},  {v[12][0], v[12][1], v[12][2]},  {v[0][0], v[0][1], v[0][2]}},
-        
-        {{v[11][0], v[11][1], v[11][2]},  {v[14][0], v[14][1], v[14][2]},  {v[12][0], v[12][1], v[12][2]}},
-        {{v[13][0], v[13][1], v[13][2]},  {v[14][0], v[14][1], v[14][2]},  {v[11][0], v[11][1], v[11][2]}},
-        
-        {{v[13][0], v[13][1], v[13][2]},  {v[16][0], v[16][1], v[16][2]},  {v[14][0], v[14][1], v[14][2]}},
-        {{v[15][0], v[15][1], v[15][2]},  {v[16][0], v[16][1], v[16][2]},  {v[13][0], v[13][1], v[13][2]}},
-        
-        {{v[15][0], v[15][1], v[15][2]},  {v[18][0], v[18][1], v[18][2]},  {v[16][0], v[16][1], v[16][2]}},
-        {{v[17][0], v[17][1], v[17][2]},  {v[18][0], v[18][1], v[18][2]},  {v[15][0], v[15][1], v[15][2]}},
-        
-        {{v[18][0], v[18][1], v[18][2]},  {v[17][0], v[17][1], v[17][2]},  {v[10][0], v[10][1], v[10][2]}},
-        
-        // one side
-        {{v[11][0], v[11][1], v[11][2]},  {v[0][0], v[0][1], v[0][2]},  {v[2][0], v[2][1], v[2][2]}},
-        
-        {{v[11][0], v[11][1], v[11][2]},  {v[2][0], v[2][1], v[2][2]},  {v[4][0], v[4][1], v[4][2]}},
-        {{v[4][0], v[4][1], v[4][2]},  {v[13][0], v[13][1], v[13][2]},  {v[11][0], v[11][1], v[11][2]}},
-        
-        {{v[13][0], v[13][1], v[13][2]},  {v[4][0], v[4][1], v[4][2]},  {v[6][0], v[6][1], v[6][2]}},
-        {{v[6][0], v[6][1], v[6][2]},  {v[15][0], v[15][1], v[15][2]},  {v[13][0], v[13][1], v[13][2]}},
-        
-        {{v[15][0], v[15][1], v[15][2]},  {v[6][0], v[6][1], v[6][2]},  {v[8][0], v[8][1], v[8][2]}},
-        {{v[8][0], v[8][1], v[8][2]},  {v[17][0], v[17][1], v[17][2]},  {v[15][0], v[15][1], v[15][2]}},
-        
-        {{v[17][0], v[17][1], v[17][2]},  {v[8][0], v[8][1], v[8][2]},  {v[10][0], v[10][1], v[10][2]}},
-        
-        // other side
-        {{v[3][0], v[3][1], v[3][2]},  {v[1][0], v[1][1], v[1][2]},  {v[12][0], v[12][1], v[12][2]}},
-        
-        {{v[3][0], v[3][1], v[3][2]},  {v[12][0], v[12][1], v[12][2]},  {v[14][0], v[14][1], v[14][2]}},
-        {{v[14][0], v[14][1], v[14][2]},  {v[5][0], v[5][1], v[5][2]},  {v[3][0], v[3][1], v[3][2]}},
-        
-        {{v[5][0], v[5][1], v[5][2]},  {v[14][0], v[14][1], v[14][2]},  {v[16][0], v[16][1], v[16][2]}},
-        {{v[16][0], v[16][1], v[16][2]},  {v[7][0], v[7][1], v[7][2]},  {v[5][0], v[5][1], v[5][2]}},
-        
-        {{v[7][0], v[7][1], v[7][2]},  {v[16][0], v[16][1], v[16][2]},  {v[18][0], v[18][1], v[18][2]}},
-        {{v[18][0], v[18][1], v[18][2]},  {v[9][0], v[9][1], v[9][2]},  {v[7][0], v[7][1], v[7][2]}},
-        
-        {{v[9][0], v[9][1], v[9][2]},  {v[18][0], v[18][1], v[18][2]},  {v[10][0], v[10][1], v[10][2]}}
-        
-    };
-    
-    
-    // Normals defined so as to make each face of the brush a flat surface
-    const GLfloat norms[34][3][3] = {
-        // top
-        {{0.0f, 0.93f, -0.37f}, {0.0f, 0.93f, -0.37f}, {0.0f, 0.93f, -0.37f}},
-        {{0.0f, 0.93f, -0.37f}, {0.0f, 0.93f, -0.37f}, {0.0f, 0.93f, -0.37f}},
-        
-        {{0.0f, 1.0f, 0.0f}, {0.0f, 1.0f, 0.0f}, {0.0f, 1.0f, 0.0f}},
-        {{0.0f, 1.0f, 0.0f}, {0.0f, 1.0f, 0.0f}, {0.0f, 1.0f, 0.0f}},
-        
-        {{0.0f, 0.988f, 0.158f}, {0.0f, 0.988f, 0.158f}, {0.0f, 0.988f, 0.158f}},
-        {{0.0f, 0.988f, 0.158f}, {0.0f, 0.988f, 0.158f}, {0.0f, 0.988f, 0.158f}},
-        
-        {{0.0f, 0.999f, -0.0533f}, {0.0f, 0.999f, -0.0533f}, {0.0f, 0.999f, -0.0533f}},
-        {{0.0f, 0.999f, -0.0533f}, {0.0f, 0.999f, -0.0533f}, {0.0f, 0.999f, -0.0533f}},
-        
-        {{0.0f, 0.709f, 0.709f}, {0.0f, 0.709f, 0.709f}, {0.0f, 0.709f, 0.709f}},
-        
-        // bottom
-        {{0.0f, -0.93f, -0.37f}, {0.0f, -0.93f, -0.37f}, {0.0f, -0.93f, -0.37f}},
-        {{0.0f, -0.93f, -0.37f}, {0.0f, -0.93f, -0.37f}, {0.0f, -0.93f, -0.37f}},
-        
-        {{0.0f, -1.0f, 0.0f}, {0.0f, -1.0f, 0.0f}, {0.0f, -1.0f, 0.0f}},
-        {{0.0f, -1.0f, 0.0f}, {0.0f, -1.0f, 0.0f}, {0.0f, -1.0f, 0.0f}},
-        
-        {{0.0f, -0.988f, 0.158f}, {0.0f, -0.988f, 0.158f}, {0.0f, -0.988f, 0.158f}},
-        {{0.0f, -0.988f, 0.158f}, {0.0f, -0.988f, 0.158f}, {0.0f, -0.988f, 0.158f}},
-        
-        {{0.0f, -0.999f, -0.0533f}, {0.0f, -0.999f, -0.0533f}, {0.0f, -0.999f, -0.0533f}},
-        {{0.0f, -0.999f, -0.0533f}, {0.0f, -0.999f, -0.0533f}, {0.0f, -0.999f, -0.0533f}},
-        
-        {{0.0f, -0.709f, 0.709f}, {0.0f, -0.709f, 0.709f}, {0.0f, -0.709f, 0.709f}},
-        
-        // one side
-        {{1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}},
-        
-        {{1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}},
-        {{1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}},
-        
-        {{0.848f, 0.0f, 0.530f}, {0.848f, 0.0f, 0.530f}, {0.848f, 0.0f, 0.530f}},
-        {{0.848f, 0.0f, 0.530f}, {0.848f, 0.0f, 0.530f}, {0.848f, 0.0f, 0.530f}},
-        
-        {{1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}},
-        {{1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}},
-        
-        {{0.709f, 0.0f, 0.709f}, {0.709f, 0.0f, 0.709f}, {0.709f, 0.0f, 0.709f}},
-        
-        // other side
-        {{-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}},
-        
-        {{-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}},
-        {{-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}},
-        
-        {{-0.848f, 0.0f, 0.530f}, {-0.848f, 0.0f, 0.530f}, {-0.848f, 0.0f, 0.530f}},
-        {{-0.848f, 0.0f, 0.530f}, {-0.848f, 0.0f, 0.530f}, {-0.848f, 0.0f, 0.530f}},
-        
-        {{-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}},
-        {{-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}},
-        
-        {{-0.709f, 0.0f, 0.709f}, {-0.709f, 0.0f, 0.709f}, {-0.709f, 0.0f, 0.709f}}
-    };
-    
-    brushMesh_.SetVertices((float*)verts, 102);
-    brushMesh_.SetNormals((float*)norms, 102);
-    brushMesh_.UpdateGPUMemory();
-}
-
-
-void QuickShapes::DrawBrush(const Matrix4 &modelMatrix, const Matrix4 &viewMatrix,
-                 const Matrix4 &projectionMatrix, const Color &color)
-{
-    if (brushMesh_.num_vertices() == 0) {
-        initBrush();
-    }
-    defaultMaterial_.ambient_reflectance = color;
-    defaultMaterial_.diffuse_reflectance = color;
-    defaultMaterial_.surface_texture = emptyTex_;
-    defaultShader_.Draw(modelMatrix, viewMatrix, projectionMatrix, &brushMesh_, defaultMaterial_);
-}
-
-
-
-// ----------------
-
-
-void QuickShapes::DrawLineSegment(const Matrix4 &modelMatrix,
-                       const Matrix4 &viewMatrix,
-                       const Matrix4 &projectionMatrix,
-                       const Color &color,
-                       const Point3 &p1,
-                       const Point3 &p2,
-                       float radius)
-{
-    Matrix4 S = Matrix4::Scale(Vector3(radius, 0.5f*(p2-p1).Length(), radius));
-    Vector3 y = (p2-p1).ToUnit();
-    Vector3 z = Vector3(1,0,0).Cross(y).ToUnit();
-    if (z == Vector3(0,0,0)) {
-        z = Vector3(0,0,1).Cross(y).ToUnit();
-    }
-    Vector3 x = y.Cross(z);
-    Matrix4 R = Matrix4::FromRowMajorElements(
-        x[0], y[0], z[0], 0,
-        x[1], y[1], z[1], 0,
-        x[2], y[2], z[2], 0,
-        0,    0,    0, 1
-    );
-    Matrix4 T = Matrix4::Translation(0.5 * Vector3(p1[0]+p2[0], p1[1]+p2[1], p1[2]+p2[2]));
-    
-    Matrix4 M = T * R * S;
-    
-    DrawCylinder(modelMatrix * M, viewMatrix, projectionMatrix, color);
-}
-
-
-
-void QuickShapes::DrawLines(const Matrix4 &modelMatrix,
-                 const Matrix4 &viewMatrix,
-                 const Matrix4 &projectionMatrix,
-                 const Color &color,
-                 const std::vector<Point3> &points,
-                 LinesType ltype,
-                 float radius)
-{
-    if (ltype == LinesType::LINES) {
-        for (size_t i=0; i<points.size(); i+=2) {
-            DrawLineSegment(modelMatrix, viewMatrix, projectionMatrix, color, points[i], points[i+1], radius);
-        }
-    }
-    else {
-        for (size_t i=0; i<points.size()-1; i++) {
-            DrawLineSegment(modelMatrix, viewMatrix, projectionMatrix, color, points[i], points[i+1], radius);
-        }
-        if (ltype == LinesType::LINE_LOOP) {
-            DrawLineSegment(modelMatrix, viewMatrix, projectionMatrix, color, points[points.size()-1], points[0], radius);
-        }
-    }
-}
-
-    
-    
-void QuickShapes::DrawArrow(const Matrix4 &modelMatrix,
-                 const Matrix4 &viewMatrix,
-                 const Matrix4 &projectionMatrix,
-                 const Color &color,
-                 Point3 p, Vector3 dir, float radius)
-{
-    float d = dir.Length() - 8.0f*radius;
-    DrawLineSegment(modelMatrix, viewMatrix, projectionMatrix, color, p, p + d*dir.ToUnit(), radius);
-    
-    Matrix4 S = Matrix4::Scale(Vector3(radius*3.0f, radius*4.0f, radius*3.0f));
-    Vector3 y = dir.ToUnit();
-    Vector3 z = Vector3(1,0,0).Cross(y).ToUnit();
-    if (z == Vector3(0,0,0)) {
-        z = Vector3(0,0,1).Cross(y).ToUnit();
-    }
-    Vector3 x = y.Cross(z);
-    Matrix4 R = Matrix4::FromRowMajorElements(
-                                              x[0], y[0], z[0], 0,
-                                              x[1], y[1], z[1], 0,
-                                              x[2], y[2], z[2], 0,
-                                              0,    0,    0, 1
-                                              );
-    Matrix4 T = Matrix4::Translation((p + d*dir.ToUnit()) - Point3::Origin());
-    
-    Matrix4 M = T * R * S * Matrix4::Translation(Vector3(0,1,0));
-    
-    DrawCone(modelMatrix * M, viewMatrix, projectionMatrix, color);
-}
-    
-    
-void QuickShapes::DrawAxes(const Matrix4 &modelMatrix,
-                const Matrix4 &viewMatrix,
-                const Matrix4 &projectionMatrix)
-{
-    DrawArrow(modelMatrix, viewMatrix, projectionMatrix, Color(1.0f, 0.6f, 0.6f), Point3::Origin(), Vector3::UnitX(), 0.02f);
-    DrawArrow(modelMatrix, viewMatrix, projectionMatrix, Color(0.6f, 1.0f, 0.6f), Point3::Origin(), Vector3::UnitY(), 0.02f);
-    DrawArrow(modelMatrix, viewMatrix, projectionMatrix, Color(0.6f, 0.6f, 1.0f), Point3::Origin(), Vector3::UnitZ(), 0.02f);
-
-}
-    
-    
-void QuickShapes::initFull() {
-    GLfloat vertices[] = {
-        -1, -1, 0,   1, -1, 0,  1, 1, 0,
-        -1, -1, 0,   1, 1, 0,   -1, 1, 0
-    };
-    
-    GLfloat normals[] = {
-        0, 0, 1,   0, 0, 1,   0, 0, 1,
-        0, 0, 1,   0, 0, 1,   0, 0, 1
-    };
-    
-    GLfloat texcoords[] = {
-        0.0f, 1.0f,   1.0f, 1.0f,   1.0f, 0.0f,
-        0.0f, 1.0f,   1.0f, 0.0f,   0.0f, 0.0f
-    };
-    
-    fullMesh_.SetVertices(vertices, 6);
-    fullMesh_.SetNormals(normals, 6);
-    fullMesh_.SetTexCoords(0, texcoords, 6);
-    fullMesh_.UpdateGPUMemory();
-}
-    
-
-void QuickShapes::DrawFullscreenTexture(const Color &color, const Texture2D &tex) {
-    if (fullMesh_.num_vertices() == 0) {
-        initFull();
-    }
-    DrawWithFullscreen(color, &fullMesh_, tex);
-}
-    
-    
-    
-    
-
-void QuickShapes::DrawWithFullscreen(const Color &color, Mesh *mesh, const Texture2D &tex) {
-    if (!fullscreenShader_.initialized()) {
-        fullscreenShader_.AddVertexShaderFromFile(Platform::FindMinGfxShaderFile("fullscreen.vert"));
-        fullscreenShader_.AddFragmentShaderFromFile(Platform::FindMinGfxShaderFile("fullscreen.frag"));
-        fullscreenShader_.LinkProgram();
-    }
-
-    glDisable(GL_DEPTH_TEST);
-    glDepthMask(GL_FALSE);
-    
-    // Activate the shader program
-    fullscreenShader_.UseProgram();
-    
-    // Pass uniforms and textures from C++ to the GPU Shader Program
-    fullscreenShader_.SetUniform("TintColor", color);
-    fullscreenShader_.BindTexture("SurfaceTexture", tex);
-    
-    // Draw the mesh using the shader program
-    mesh->Draw();
-    
-    // Deactivate the shader program
-    fullscreenShader_.StopProgram();
-    
-    glEnable(GL_DEPTH_TEST);
-    glDepthMask(GL_TRUE);
-}
-
-
-DefaultShader* QuickShapes::default_shader() {
-    return &defaultShader_;
-}
-    
-    
-DefaultShader::MaterialProperties* QuickShapes::material() {
-    return &defaultMaterial_;
-}
-
-    
-} // end namespace
+/*

+ Copyright (c) 2017,2018 Regents of the University of Minnesota.

+ All Rights Reserved.

+ See corresponding header file for details.

+ */

+

+#include "quick_shapes.h"

+#include "platform.h"

+

+#include <cmath>

+#include <iostream>

+#include <string>

+

+

+namespace mingfx {

+    

+    

+    

+#define PI 3.14159265359f

+#define TWOPI 6.28318530718f

+    

+    

+    

+// Helper datastructure for building shapes algorithmically

+class Vertex {

+public:

+    Vertex(GLfloat xx, GLfloat yy, GLfloat zz, GLfloat nnx, GLfloat nny, GLfloat nnz) :

+    x(xx), y(yy), z(zz), nx(nnx), ny(nny), nz(nnz) {}

+    

+    GLfloat x;

+    GLfloat y;

+    GLfloat z;

+    GLfloat nx;

+    GLfloat ny;

+    GLfloat nz;

+};

+

+    

+    

+    

+QuickShapes::QuickShapes() {

+}

+

+QuickShapes::~QuickShapes() {

+}

+    

+    

+    

+    

+// ------------  CUBE  ------------

+

+

+void QuickShapes::initCube() {

+    GLfloat vertices[]  = {

+        1.0f, 1.0f, 1.0f,  -1.0f, 1.0f, 1.0f,  -1.0f,-1.0f, 1.0f,      // v0-v1-v2 (front)

+        -1.0f,-1.0f, 1.0f,   1.0f,-1.0f, 1.0f,   1.0f, 1.0f, 1.0f,      // v2-v3-v0

+        

+        1.0f, 1.0f, 1.0f,   1.0f,-1.0f, 1.0f,   1.0f,-1.0f,-1.0f,      // v0-v3-v4 (right)

+        1.0f,-1.0f,-1.0f,   1.0f, 1.0f,-1.0f,   1.0f, 1.0f, 1.0f,      // v4-v5-v0

+        

+        1.0f, 1.0f, 1.0f,   1.0f, 1.0f,-1.0f,  -1.0f, 1.0f,-1.0f,      // v0-v5-v6 (top)

+        -1.0f, 1.0f,-1.0f,  -1.0f, 1.0f, 1.0f,   1.0f, 1.0f, 1.0f,      // v6-v1-v0

+        

+        -1.0f, 1.0f, 1.0f,  -1.0f, 1.0f,-1.0f,  -1.0f,-1.0f,-1.0f,      // v1-v6-v7 (left)

+        -1.0f,-1.0f,-1.0f,  -1.0f,-1.0f, 1.0f,  -1.0f, 1.0f, 1.0f,      // v7-v2-v1.0

+        

+        -1.0f,-1.0f,-1.0f,   1.0f,-1.0f,-1.0f,   1.0f,-1.0f, 1.0f,      // v7-v4-v3 (bottom)

+        1.0f,-1.0f, 1.0f,  -1.0f,-1.0f, 1.0f,  -1.0f,-1.0f,-1.0f,      // v3-v2-v7

+        

+        1.0f,-1.0f,-1.0f,  -1.0f,-1.0f,-1.0f,  -1.0f, 1.0f,-1.0f,      // v4-v7-v6 (back)

+        -1.0f, 1.0f,-1.0f,   1.0f, 1.0f,-1.0f,   1.0f,-1.0f,-1.0f       // v6-v5-v4

+    };

+    

+    GLfloat normals[]   = {

+        0, 0, 1,   0, 0, 1,   0, 0, 1,      // v0-v1-v2 (front)

+        0, 0, 1,   0, 0, 1,   0, 0, 1,      // v2-v3-v0

+        

+        1, 0, 0,   1, 0, 0,   1, 0, 0,      // v0-v3-v4 (right)

+        1, 0, 0,   1, 0, 0,   1, 0, 0,      // v4-v5-v0

+        

+        0, 1, 0,   0, 1, 0,   0, 1, 0,      // v0-v5-v6 (top)

+        0, 1, 0,   0, 1, 0,   0, 1, 0,      // v6-v1-v0

+        

+        -1, 0, 0,  -1, 0, 0,  -1, 0, 0,     // v1-v6-v7 (left)

+        -1, 0, 0,  -1, 0, 0,  -1, 0, 0,     // v7-v2-v1

+        

+        0,-1, 0,   0,-1, 0,   0,-1, 0,      // v7-v4-v3 (bottom)

+        0,-1, 0,   0,-1, 0,   0,-1, 0,      // v3-v2-v7

+        

+        0, 0,-1,   0, 0,-1,   0, 0,-1,      // v4-v7-v6 (back)

+        0, 0,-1,   0, 0,-1,   0, 0,-1       // v6-v5-v4

+    };

+    

+    cubeMesh_.SetVertices(vertices, 36);

+    cubeMesh_.SetNormals(normals, 36);

+    cubeMesh_.UpdateGPUMemory();

+}

+

+

+void QuickShapes::DrawCube(const Matrix4 &modelMatrix, const Matrix4 &viewMatrix,

+                const Matrix4 &projectionMatrix, const Color &color)

+{

+    if (cubeMesh_.num_vertices() == 0) {

+        initCube();

+    }

+    defaultMaterial_.ambient_reflectance = color;

+    defaultMaterial_.diffuse_reflectance = color;

+    defaultMaterial_.surface_texture = emptyTex_;

+    defaultShader_.Draw(modelMatrix, viewMatrix, projectionMatrix, &cubeMesh_, defaultMaterial_);

+}

+

+

+

+

+// ------------  SQUARE  ------------

+

+

+void QuickShapes::initSquare() {

+    GLfloat vertices[] = {

+        1.0f, 0.0f, 1.0f,   1.0f, 0.0f,-1.0f,  -1.0f, 0.0f,-1.0f,      // v0-v5-v6 (top)

+        -1.0f, 0.0f,-1.0f,  -1.0f, 0.0f, 1.0f,   1.0f, 0.0f, 1.0f      // v6-v1-v0

+    };

+    

+    GLfloat normals[] = {

+        0, 1, 0,   0, 1, 0,   0, 1, 0,

+        0, 1, 0,   0, 1, 0,   0, 1, 0

+    };

+    

+    GLfloat texcoords[] = {

+        1.0f, 1.0f,   1.0f, 0.0f,   0.0f, 0.0f,

+        0.0f, 0.0f,   0.0f, 1.0f,   1.0f, 1.0f

+    };

+    

+    squareMesh_.SetVertices(vertices, 6);

+    squareMesh_.SetNormals(normals, 6);

+    squareMesh_.SetTexCoords(0, texcoords, 6);

+    squareMesh_.UpdateGPUMemory();

+}

+

+

+void QuickShapes::DrawSquare(const Matrix4 &modelMatrix, const Matrix4 &viewMatrix,

+                  const Matrix4 &projectionMatrix, const Color &color)

+{

+    if (squareMesh_.num_vertices() == 0) {

+        initSquare();

+    }

+    defaultMaterial_.ambient_reflectance = color;

+    defaultMaterial_.diffuse_reflectance = color;

+    defaultMaterial_.surface_texture = emptyTex_;

+    defaultShader_.Draw(modelMatrix, viewMatrix, projectionMatrix, &squareMesh_, defaultMaterial_);

+}

+    

+

+void QuickShapes::DrawSquare(const Matrix4 &modelMatrix, const Matrix4 &viewMatrix,

+                  const Matrix4 &projectionMatrix, const Color &color,

+                  const Texture2D &tex)

+{

+    if (squareMesh_.num_vertices() == 0) {

+        initSquare();

+    }

+    defaultMaterial_.ambient_reflectance = color;

+    defaultMaterial_.diffuse_reflectance = color;

+    defaultMaterial_.surface_texture = tex;

+    defaultShader_.Draw(modelMatrix, viewMatrix, projectionMatrix, &squareMesh_, defaultMaterial_);

+}

+    

+    

+    

+

+

+// ------------  CYLINDER  ------------

+

+

+void QuickShapes::initCyl() {

+    

+    std::vector<Vertex> verts;

+    

+    Vertex top(0,1,0, 0,1,0);

+    Vertex bot(0,-1,0, 0,-1,0);

+    

+    const int nslices = 20;

+    for (int s=1; s<nslices+1; s++) {

+        int slast = s - 1;

+        GLfloat xlast = std::cosf(-TWOPI * (float)slast / (float)nslices);

+        GLfloat zlast = std::sinf(-TWOPI * (float)slast/(float)nslices);

+        GLfloat xnew = std::cosf(-TWOPI * (float)(s)/(float)nslices);

+        GLfloat znew = std::sinf(-TWOPI * (float)(s)/(float)nslices);

+        

+        // one triangle on the top

+        verts.push_back(top);

+        verts.push_back(Vertex(xlast,1,zlast, 0,1,0));

+        verts.push_back(Vertex(xnew,1,znew, 0,1,0));

+        

+        // two triangles to create a rect on the side

+        verts.push_back(Vertex(xlast,1,zlast, xlast,0,zlast));

+        verts.push_back(Vertex(xlast,-1,zlast, xlast,0,zlast));

+        verts.push_back(Vertex(xnew,1,znew, xnew,0,znew));

+        

+        verts.push_back(Vertex(xnew,-1,znew, xnew,0,znew));

+        verts.push_back(Vertex(xnew,1,znew, xnew,0,znew));

+        verts.push_back(Vertex(xlast,-1,zlast, xlast,0,zlast));

+        

+        // one triangle on the bottom

+        verts.push_back(bot);

+        verts.push_back(Vertex(xnew,-1,znew, 0,-1,0));

+        verts.push_back(Vertex(xlast,-1,zlast, 0,-1,0));

+    }

+    

+    std::vector<Point3> vertices;

+    std::vector<Vector3> normals;

+    for (int i=0; i<verts.size(); i++) {

+        vertices.push_back(Point3(verts[i].x, verts[i].y, verts[i].z));

+        normals.push_back(Vector3(verts[i].nx, verts[i].ny, verts[i].nz));

+    }    

+    cylMesh_.SetVertices(vertices);

+    cylMesh_.SetNormals(normals);

+    cylMesh_.UpdateGPUMemory();

+}

+

+

+void QuickShapes::DrawCylinder(const Matrix4 &modelMatrix, const Matrix4 &viewMatrix,

+                    const Matrix4 &projectionMatrix, const Color &color)

+{

+    if (cylMesh_.num_vertices() == 0) {

+        initCyl();

+    }

+    defaultMaterial_.ambient_reflectance = color;

+    defaultMaterial_.diffuse_reflectance = color;

+    defaultMaterial_.surface_texture = emptyTex_;

+    defaultShader_.Draw(modelMatrix, viewMatrix, projectionMatrix, &cylMesh_, defaultMaterial_);

+}

+

+

+

+

+// ------------  CONE  ------------

+

+

+void QuickShapes::initCone() {

+    

+    std::vector<Vertex> verts;

+    

+    Vertex top(0,1,0, 0,1,0);

+    Vertex bot(0,-1,0, 0,-1,0);

+    

+    const int nslices = 20;

+    for (int s=1; s<nslices+1; s++) {

+        int slast = s - 1;

+        GLfloat xlast = std::cosf(-TWOPI * (float)slast/(float)nslices);

+        GLfloat zlast = std::sinf(-TWOPI * (float)slast/(float)nslices);

+        GLfloat xnew = std::cosf(-TWOPI * (float)(s)/(float)nslices);

+        GLfloat znew = std::sinf(-TWOPI * (float)(s)/(float)nslices);

+        

+        // one triangle on the side

+        // normals are a bit more complex than for other shapes...

+        Vector3 nlast = Vector3(xlast, 2, zlast).ToUnit();

+        Vector3 nnew = Vector3(xnew, 2, znew).ToUnit();

+        Vector3 ntop = 0.5*(nlast + nnew);

+        

+        verts.push_back(Vertex(top.x, top.y, top.z, ntop[0], ntop[1], ntop[2]));

+        verts.push_back(Vertex(xlast,-1,zlast, nlast[0], nlast[1], nlast[2]));

+        verts.push_back(Vertex(xnew,-1,znew, nnew[0], nnew[1], nnew[2]));

+        

+        // one triangle on the bottom

+        verts.push_back(bot);

+        verts.push_back(Vertex(xnew,-1,znew, 0,-1,0));

+        verts.push_back(Vertex(xlast,-1,zlast, 0,-1,0));

+    }

+    

+    std::vector<Point3> vertices;

+    std::vector<Vector3> normals;

+    for (int i = 0; i < verts.size(); i++) {

+        vertices.push_back(Point3(verts[i].x, verts[i].y, verts[i].z));

+        normals.push_back(Vector3(verts[i].nx, verts[i].ny, verts[i].nz));

+    }

+    

+    coneMesh_.SetVertices(vertices);

+    coneMesh_.SetNormals(normals);

+    coneMesh_.UpdateGPUMemory();

+}

+

+

+void QuickShapes::DrawCone(const Matrix4 &modelMatrix, const Matrix4 &viewMatrix,

+                const Matrix4 &projectionMatrix, const Color &color)

+{

+    if (coneMesh_.num_vertices() == 0) {

+        initCone();

+    }

+    defaultMaterial_.ambient_reflectance = color;

+    defaultMaterial_.diffuse_reflectance = color;

+    defaultMaterial_.surface_texture = emptyTex_;

+    defaultShader_.Draw(modelMatrix, viewMatrix, projectionMatrix, &coneMesh_, defaultMaterial_);

+}

+

+

+

+

+

+// ------------  SPHERE  ------------

+

+

+void QuickShapes::initSph() {

+    

+    std::vector<Vertex> verts;

+    

+    Vertex top(0,1,0, 0,1,0);

+    Vertex bot(0,-1,0, 0,-1,0);

+    

+    const int nslices = 40;

+    const int nstacks = 40;

+    for (int s=1; s<nslices+1; s++) {

+        int slast = s - 1;

+        GLfloat xlast = std::cosf(-TWOPI * (float)slast/(float)nslices);

+        GLfloat zlast = std::sinf(-TWOPI * (float)slast/(float)nslices);

+        GLfloat xnew = std::cosf(-TWOPI * (float)(s)/(float)nslices);

+        GLfloat znew = std::sinf(-TWOPI * (float)(s)/(float)nslices);

+        

+        float stackstep = PI/(float)nstacks;

+        

+        // one triangle on the top

+        verts.push_back(top);

+        verts.push_back(Vertex(std::sinf(stackstep)*xlast,std::cosf(stackstep),std::sinf(stackstep)*zlast,

+                               std::sinf(stackstep)*xlast,std::cosf(stackstep),std::sinf(stackstep)*zlast));

+        verts.push_back(Vertex(std::sinf(stackstep)*xnew,std::cosf(stackstep),std::sinf(stackstep)*znew,

+                               std::sinf(stackstep)*xnew,std::cosf(stackstep),std::sinf(stackstep)*znew));

+        

+        for (int t=2; t<nstacks; t++) {

+            int tlast = t - 1;

+            GLfloat ylast = std::cosf(PI*(float)(tlast)/(float)nstacks);

+            GLfloat ynew = std::cosf(PI*(float)(t)/(float)nstacks);

+            

+            GLfloat rlast = std::sinf(PI * (float)(tlast)/(float)nstacks);

+            GLfloat rnew = std::sinf(PI * (float)(t)/(float)nstacks);

+            

+            // two triangles to create a rect on the side

+            verts.push_back(Vertex(rlast*xlast,ylast,rlast*zlast, rlast*xlast,ylast,rlast*zlast));

+            verts.push_back(Vertex(rnew*xlast,ynew,rnew*zlast, rnew*xlast,ynew,rnew*zlast));

+            verts.push_back(Vertex(rnew*xnew,ynew,rnew*znew, rnew*xnew,ynew,rnew*znew));

+            

+            verts.push_back(Vertex(rnew*xnew,ynew,rnew*znew, rnew*xnew,ynew,rnew*znew));

+            verts.push_back(Vertex(rlast*xnew,ylast,rlast*znew, rlast*xnew,ylast,rlast*znew));

+            verts.push_back(Vertex(rlast*xlast,ylast,rlast*zlast, rlast*xlast,ylast,rlast*zlast));

+        }

+        

+        // one triangle on the bottom

+        verts.push_back(bot);

+        verts.push_back(Vertex(std::sinf(stackstep)*xnew,std::cosf(PI-stackstep),std::sinf(stackstep)*znew,

+                               std::sinf(stackstep)*xnew,std::cosf(PI-stackstep),std::sinf(stackstep)*znew));

+        verts.push_back(Vertex(std::sinf(stackstep)*xlast,std::cosf(PI-stackstep),std::sinf(stackstep)*zlast,

+                               std::sinf(stackstep)*xlast,std::cosf(PI-stackstep),std::sinf(stackstep)*zlast));

+    }

+    

+    std::vector<Point3> vertices;

+    std::vector<Vector3> normals;

+    for (int i = 0; i < verts.size(); i++) {

+        vertices.push_back(Point3(verts[i].x, verts[i].y, verts[i].z));

+        normals.push_back(Vector3(verts[i].nx, verts[i].ny, verts[i].nz));

+    }

+    sphereMesh_.SetVertices(vertices);

+    sphereMesh_.SetNormals(normals);

+    sphereMesh_.UpdateGPUMemory();

+}

+

+

+void QuickShapes::DrawSphere(const Matrix4 &modelMatrix, const Matrix4 &viewMatrix,

+                  const Matrix4 &projectionMatrix, const Color &color)

+{

+    if (sphereMesh_.num_vertices() == 0) {

+        initSph();

+    }

+    defaultMaterial_.ambient_reflectance = color;

+    defaultMaterial_.diffuse_reflectance = color;

+    defaultMaterial_.surface_texture = emptyTex_;

+    defaultShader_.Draw(modelMatrix, viewMatrix, projectionMatrix, &sphereMesh_, defaultMaterial_);

+}

+

+

+

+

+// ------------  BRUSH  ------------

+

+

+void QuickShapes::initBrush() {

+    

+    // Raw vertices -- points that make up the brush geometry

+    const GLfloat v[19][3] = {

+        { 0.5f,   0.0f,   0.0f},  // 0

+        {-0.5f,   0.0f,   0.0f},  // 1

+        

+        { 0.5f,   0.1f,   0.25f}, // 2

+        {-0.5f,   0.1f,   0.25f}, // 3

+        { 0.5f,   0.1f,   0.75f}, // 4

+        {-0.5f,   0.1f,   0.75f}, // 5

+        { 0.1f,   0.06f,  1.0f},  // 6

+        {-0.1f,   0.06f,  1.0f},  // 7

+        { 0.15f,  0.1f,   1.75f}, // 8

+        {-0.15f,  0.1f,   1.75f}, // 9

+        

+        { 0.0f,   0.0f,   1.85f}, // 10

+        

+        { 0.5f,  -0.1f,   0.25f}, // 11

+        {-0.5f,  -0.1f,   0.25f}, // 12

+        { 0.5f,  -0.1f,   0.75f}, // 13

+        {-0.5f,  -0.1f,   0.75f}, // 14

+        { 0.1f,  -0.06f,  1.0f},  // 15

+        {-0.1f,  -0.06f,  1.0f},  // 16

+        { 0.15f, -0.1f,   1.75f}, // 17

+        {-0.15f, -0.1f,   1.75f}  // 18

+    };

+    

+    

+    // Vertices arranged into triangles

+    const GLfloat verts[34][3][3] = {

+        // top

+        {{v[0][0], v[0][1], v[0][2]},  {v[1][0], v[1][1], v[1][2]},  {v[2][0], v[2][1], v[2][2]}},

+        {{v[1][0], v[1][1], v[1][2]},  {v[3][0], v[3][1], v[3][2]},  {v[2][0], v[2][1], v[2][2]}},

+        

+        {{v[2][0], v[2][1], v[2][2]},  {v[3][0], v[3][1], v[3][2]},  {v[4][0], v[4][1], v[4][2]}},

+        {{v[3][0], v[3][1], v[3][2]},  {v[5][0], v[5][1], v[5][2]},  {v[4][0], v[4][1], v[4][2]}},

+        

+        {{v[4][0], v[4][1], v[4][2]},  {v[5][0], v[5][1], v[5][2]},  {v[6][0], v[6][1], v[6][2]}},

+        {{v[5][0], v[5][1], v[5][2]},  {v[7][0], v[7][1], v[7][2]},  {v[6][0], v[6][1], v[6][2]}},

+        

+        {{v[6][0], v[6][1], v[6][2]},  {v[7][0], v[7][1], v[7][2]},  {v[8][0], v[8][1], v[8][2]}},

+        {{v[7][0], v[7][1], v[7][2]},  {v[9][0], v[9][1], v[9][2]},  {v[8][0], v[8][1], v[8][2]}},

+        

+        {{v[8][0], v[8][1], v[8][2]},  {v[9][0], v[9][1], v[9][2]},  {v[10][0], v[10][1], v[10][2]}},

+        

+        // bottom

+        {{v[0][0], v[0][1], v[0][2]},  {v[12][0], v[12][1], v[12][2]},  {v[1][0], v[1][1], v[1][2]}},

+        {{v[11][0], v[11][1], v[11][2]},  {v[12][0], v[12][1], v[12][2]},  {v[0][0], v[0][1], v[0][2]}},

+        

+        {{v[11][0], v[11][1], v[11][2]},  {v[14][0], v[14][1], v[14][2]},  {v[12][0], v[12][1], v[12][2]}},

+        {{v[13][0], v[13][1], v[13][2]},  {v[14][0], v[14][1], v[14][2]},  {v[11][0], v[11][1], v[11][2]}},

+        

+        {{v[13][0], v[13][1], v[13][2]},  {v[16][0], v[16][1], v[16][2]},  {v[14][0], v[14][1], v[14][2]}},

+        {{v[15][0], v[15][1], v[15][2]},  {v[16][0], v[16][1], v[16][2]},  {v[13][0], v[13][1], v[13][2]}},

+        

+        {{v[15][0], v[15][1], v[15][2]},  {v[18][0], v[18][1], v[18][2]},  {v[16][0], v[16][1], v[16][2]}},

+        {{v[17][0], v[17][1], v[17][2]},  {v[18][0], v[18][1], v[18][2]},  {v[15][0], v[15][1], v[15][2]}},

+        

+        {{v[18][0], v[18][1], v[18][2]},  {v[17][0], v[17][1], v[17][2]},  {v[10][0], v[10][1], v[10][2]}},

+        

+        // one side

+        {{v[11][0], v[11][1], v[11][2]},  {v[0][0], v[0][1], v[0][2]},  {v[2][0], v[2][1], v[2][2]}},

+        

+        {{v[11][0], v[11][1], v[11][2]},  {v[2][0], v[2][1], v[2][2]},  {v[4][0], v[4][1], v[4][2]}},

+        {{v[4][0], v[4][1], v[4][2]},  {v[13][0], v[13][1], v[13][2]},  {v[11][0], v[11][1], v[11][2]}},

+        

+        {{v[13][0], v[13][1], v[13][2]},  {v[4][0], v[4][1], v[4][2]},  {v[6][0], v[6][1], v[6][2]}},

+        {{v[6][0], v[6][1], v[6][2]},  {v[15][0], v[15][1], v[15][2]},  {v[13][0], v[13][1], v[13][2]}},

+        

+        {{v[15][0], v[15][1], v[15][2]},  {v[6][0], v[6][1], v[6][2]},  {v[8][0], v[8][1], v[8][2]}},

+        {{v[8][0], v[8][1], v[8][2]},  {v[17][0], v[17][1], v[17][2]},  {v[15][0], v[15][1], v[15][2]}},

+        

+        {{v[17][0], v[17][1], v[17][2]},  {v[8][0], v[8][1], v[8][2]},  {v[10][0], v[10][1], v[10][2]}},

+        

+        // other side

+        {{v[3][0], v[3][1], v[3][2]},  {v[1][0], v[1][1], v[1][2]},  {v[12][0], v[12][1], v[12][2]}},

+        

+        {{v[3][0], v[3][1], v[3][2]},  {v[12][0], v[12][1], v[12][2]},  {v[14][0], v[14][1], v[14][2]}},

+        {{v[14][0], v[14][1], v[14][2]},  {v[5][0], v[5][1], v[5][2]},  {v[3][0], v[3][1], v[3][2]}},

+        

+        {{v[5][0], v[5][1], v[5][2]},  {v[14][0], v[14][1], v[14][2]},  {v[16][0], v[16][1], v[16][2]}},

+        {{v[16][0], v[16][1], v[16][2]},  {v[7][0], v[7][1], v[7][2]},  {v[5][0], v[5][1], v[5][2]}},

+        

+        {{v[7][0], v[7][1], v[7][2]},  {v[16][0], v[16][1], v[16][2]},  {v[18][0], v[18][1], v[18][2]}},

+        {{v[18][0], v[18][1], v[18][2]},  {v[9][0], v[9][1], v[9][2]},  {v[7][0], v[7][1], v[7][2]}},

+        

+        {{v[9][0], v[9][1], v[9][2]},  {v[18][0], v[18][1], v[18][2]},  {v[10][0], v[10][1], v[10][2]}}

+        

+    };

+    

+    

+    // Normals defined so as to make each face of the brush a flat surface

+    const GLfloat norms[34][3][3] = {

+        // top

+        {{0.0f, 0.93f, -0.37f}, {0.0f, 0.93f, -0.37f}, {0.0f, 0.93f, -0.37f}},

+        {{0.0f, 0.93f, -0.37f}, {0.0f, 0.93f, -0.37f}, {0.0f, 0.93f, -0.37f}},

+        

+        {{0.0f, 1.0f, 0.0f}, {0.0f, 1.0f, 0.0f}, {0.0f, 1.0f, 0.0f}},

+        {{0.0f, 1.0f, 0.0f}, {0.0f, 1.0f, 0.0f}, {0.0f, 1.0f, 0.0f}},

+        

+        {{0.0f, 0.988f, 0.158f}, {0.0f, 0.988f, 0.158f}, {0.0f, 0.988f, 0.158f}},

+        {{0.0f, 0.988f, 0.158f}, {0.0f, 0.988f, 0.158f}, {0.0f, 0.988f, 0.158f}},

+        

+        {{0.0f, 0.999f, -0.0533f}, {0.0f, 0.999f, -0.0533f}, {0.0f, 0.999f, -0.0533f}},

+        {{0.0f, 0.999f, -0.0533f}, {0.0f, 0.999f, -0.0533f}, {0.0f, 0.999f, -0.0533f}},

+        

+        {{0.0f, 0.709f, 0.709f}, {0.0f, 0.709f, 0.709f}, {0.0f, 0.709f, 0.709f}},

+        

+        // bottom

+        {{0.0f, -0.93f, -0.37f}, {0.0f, -0.93f, -0.37f}, {0.0f, -0.93f, -0.37f}},

+        {{0.0f, -0.93f, -0.37f}, {0.0f, -0.93f, -0.37f}, {0.0f, -0.93f, -0.37f}},

+        

+        {{0.0f, -1.0f, 0.0f}, {0.0f, -1.0f, 0.0f}, {0.0f, -1.0f, 0.0f}},

+        {{0.0f, -1.0f, 0.0f}, {0.0f, -1.0f, 0.0f}, {0.0f, -1.0f, 0.0f}},

+        

+        {{0.0f, -0.988f, 0.158f}, {0.0f, -0.988f, 0.158f}, {0.0f, -0.988f, 0.158f}},

+        {{0.0f, -0.988f, 0.158f}, {0.0f, -0.988f, 0.158f}, {0.0f, -0.988f, 0.158f}},

+        

+        {{0.0f, -0.999f, -0.0533f}, {0.0f, -0.999f, -0.0533f}, {0.0f, -0.999f, -0.0533f}},

+        {{0.0f, -0.999f, -0.0533f}, {0.0f, -0.999f, -0.0533f}, {0.0f, -0.999f, -0.0533f}},

+        

+        {{0.0f, -0.709f, 0.709f}, {0.0f, -0.709f, 0.709f}, {0.0f, -0.709f, 0.709f}},

+        

+        // one side

+        {{1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}},

+        

+        {{1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}},

+        {{1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}},

+        

+        {{0.848f, 0.0f, 0.530f}, {0.848f, 0.0f, 0.530f}, {0.848f, 0.0f, 0.530f}},

+        {{0.848f, 0.0f, 0.530f}, {0.848f, 0.0f, 0.530f}, {0.848f, 0.0f, 0.530f}},

+        

+        {{1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}},

+        {{1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}},

+        

+        {{0.709f, 0.0f, 0.709f}, {0.709f, 0.0f, 0.709f}, {0.709f, 0.0f, 0.709f}},

+        

+        // other side

+        {{-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}},

+        

+        {{-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}},

+        {{-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}},

+        

+        {{-0.848f, 0.0f, 0.530f}, {-0.848f, 0.0f, 0.530f}, {-0.848f, 0.0f, 0.530f}},

+        {{-0.848f, 0.0f, 0.530f}, {-0.848f, 0.0f, 0.530f}, {-0.848f, 0.0f, 0.530f}},

+        

+        {{-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}},

+        {{-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f}},

+        

+        {{-0.709f, 0.0f, 0.709f}, {-0.709f, 0.0f, 0.709f}, {-0.709f, 0.0f, 0.709f}}

+    };

+    

+    brushMesh_.SetVertices((float*)verts, 102);

+    brushMesh_.SetNormals((float*)norms, 102);

+    brushMesh_.UpdateGPUMemory();

+}

+

+

+void QuickShapes::DrawBrush(const Matrix4 &modelMatrix, const Matrix4 &viewMatrix,

+                 const Matrix4 &projectionMatrix, const Color &color)

+{

+    if (brushMesh_.num_vertices() == 0) {

+        initBrush();

+    }

+    defaultMaterial_.ambient_reflectance = color;

+    defaultMaterial_.diffuse_reflectance = color;

+    defaultMaterial_.surface_texture = emptyTex_;

+    defaultShader_.Draw(modelMatrix, viewMatrix, projectionMatrix, &brushMesh_, defaultMaterial_);

+}

+

+

+

+// ----------------

+

+

+void QuickShapes::DrawLineSegment(const Matrix4 &modelMatrix,

+                       const Matrix4 &viewMatrix,

+                       const Matrix4 &projectionMatrix,

+                       const Color &color,

+                       const Point3 &p1,

+                       const Point3 &p2,

+                       float radius)

+{

+    Matrix4 S = Matrix4::Scale(Vector3(radius, 0.5f*(p2-p1).Length(), radius));

+    Vector3 y = (p2-p1).ToUnit();

+    Vector3 z = Vector3(1,0,0).Cross(y).ToUnit();

+    if (z == Vector3(0,0,0)) {

+        z = Vector3(0,0,1).Cross(y).ToUnit();

+    }

+    Vector3 x = y.Cross(z);

+    Matrix4 R = Matrix4::FromRowMajorElements(

+        x[0], y[0], z[0], 0,

+        x[1], y[1], z[1], 0,

+        x[2], y[2], z[2], 0,

+        0,    0,    0, 1

+    );

+    Matrix4 T = Matrix4::Translation(0.5 * Vector3(p1[0]+p2[0], p1[1]+p2[1], p1[2]+p2[2]));

+    

+    Matrix4 M = T * R * S;

+    

+    DrawCylinder(modelMatrix * M, viewMatrix, projectionMatrix, color);

+}

+

+

+

+void QuickShapes::DrawLines(const Matrix4 &modelMatrix,

+                 const Matrix4 &viewMatrix,

+                 const Matrix4 &projectionMatrix,

+                 const Color &color,

+                 const std::vector<Point3> &points,

+                 LinesType ltype,

+                 float radius)

+{

+    if (ltype == LinesType::LINES) {

+        for (size_t i=0; i<points.size(); i+=2) {

+            DrawLineSegment(modelMatrix, viewMatrix, projectionMatrix, color, points[i], points[i+1], radius);

+        }

+    }

+    else {

+        for (size_t i=0; i<points.size()-1; i++) {

+            DrawLineSegment(modelMatrix, viewMatrix, projectionMatrix, color, points[i], points[i+1], radius);

+        }

+        if (ltype == LinesType::LINE_LOOP) {

+            DrawLineSegment(modelMatrix, viewMatrix, projectionMatrix, color, points[points.size()-1], points[0], radius);

+        }

+    }

+}

+

+    

+    

+void QuickShapes::DrawArrow(const Matrix4 &modelMatrix,

+                 const Matrix4 &viewMatrix,

+                 const Matrix4 &projectionMatrix,

+                 const Color &color,

+                 Point3 p, Vector3 dir, float radius)

+{

+    float d = dir.Length() - 8.0f*radius;

+    DrawLineSegment(modelMatrix, viewMatrix, projectionMatrix, color, p, p + d*dir.ToUnit(), radius);

+    

+    Matrix4 S = Matrix4::Scale(Vector3(radius*3.0f, radius*4.0f, radius*3.0f));

+    Vector3 y = dir.ToUnit();

+    Vector3 z = Vector3(1,0,0).Cross(y).ToUnit();

+    if (z == Vector3(0,0,0)) {

+        z = Vector3(0,0,1).Cross(y).ToUnit();

+    }

+    Vector3 x = y.Cross(z);

+    Matrix4 R = Matrix4::FromRowMajorElements(

+                                              x[0], y[0], z[0], 0,

+                                              x[1], y[1], z[1], 0,

+                                              x[2], y[2], z[2], 0,

+                                              0,    0,    0, 1

+                                              );

+    Matrix4 T = Matrix4::Translation((p + d*dir.ToUnit()) - Point3::Origin());

+    

+    Matrix4 M = T * R * S * Matrix4::Translation(Vector3(0,1,0));

+    

+    DrawCone(modelMatrix * M, viewMatrix, projectionMatrix, color);

+}

+    

+    

+void QuickShapes::DrawAxes(const Matrix4 &modelMatrix,

+                const Matrix4 &viewMatrix,

+                const Matrix4 &projectionMatrix)

+{

+    DrawArrow(modelMatrix, viewMatrix, projectionMatrix, Color(1.0f, 0.6f, 0.6f), Point3::Origin(), Vector3::UnitX(), 0.02f);

+    DrawArrow(modelMatrix, viewMatrix, projectionMatrix, Color(0.6f, 1.0f, 0.6f), Point3::Origin(), Vector3::UnitY(), 0.02f);

+    DrawArrow(modelMatrix, viewMatrix, projectionMatrix, Color(0.6f, 0.6f, 1.0f), Point3::Origin(), Vector3::UnitZ(), 0.02f);

+

+}

+    

+    

+void QuickShapes::initFull() {

+    GLfloat vertices[] = {

+        -1, -1, 0,   1, -1, 0,  1, 1, 0,

+        -1, -1, 0,   1, 1, 0,   -1, 1, 0

+    };

+    

+    GLfloat normals[] = {

+        0, 0, 1,   0, 0, 1,   0, 0, 1,

+        0, 0, 1,   0, 0, 1,   0, 0, 1

+    };

+    

+    GLfloat texcoords[] = {

+        0.0f, 1.0f,   1.0f, 1.0f,   1.0f, 0.0f,

+        0.0f, 1.0f,   1.0f, 0.0f,   0.0f, 0.0f

+    };

+    

+    fullMesh_.SetVertices(vertices, 6);

+    fullMesh_.SetNormals(normals, 6);

+    fullMesh_.SetTexCoords(0, texcoords, 6);

+    fullMesh_.UpdateGPUMemory();

+}

+    

+

+void QuickShapes::DrawFullscreenTexture(const Color &color, const Texture2D &tex) {

+    if (fullMesh_.num_vertices() == 0) {

+        initFull();

+    }

+    DrawWithFullscreen(color, &fullMesh_, tex);

+}

+    

+    

+    

+    

+

+void QuickShapes::DrawWithFullscreen(const Color &color, Mesh *mesh, const Texture2D &tex) {

+    if (!fullscreenShader_.initialized()) {

+        fullscreenShader_.AddVertexShaderFromFile(Platform::FindMinGfxShaderFile("fullscreen.vert"));

+        fullscreenShader_.AddFragmentShaderFromFile(Platform::FindMinGfxShaderFile("fullscreen.frag"));

+        fullscreenShader_.LinkProgram();

+    }

+

+    glDisable(GL_DEPTH_TEST);

+    glDepthMask(GL_FALSE);

+    

+    // Activate the shader program

+    fullscreenShader_.UseProgram();

+    

+    // Pass uniforms and textures from C++ to the GPU Shader Program

+    fullscreenShader_.SetUniform("TintColor", color);

+    fullscreenShader_.BindTexture("SurfaceTexture", tex);

+    

+    // Draw the mesh using the shader program

+    mesh->Draw();

+    

+    // Deactivate the shader program

+    fullscreenShader_.StopProgram();

+    

+    glEnable(GL_DEPTH_TEST);

+    glDepthMask(GL_TRUE);

+}

+

+

+DefaultShader* QuickShapes::default_shader() {

+    return &defaultShader_;

+}

+    

+    

+DefaultShader::MaterialProperties* QuickShapes::material() {

+    return &defaultMaterial_;

+}

+

+    

+} // end namespace