Added example projects from lecture

1 files changed, 125 insertions, 0 deletions

diff --git a/dev/angry-vectors/angry_vectors.cc b/dev/angry-vectors/angry_vectors.cc
new file mode 100644
index 0000000..9ca7445
--- /dev/null
+++ b/dev/angry-vectors/angry_vectors.cc
@@ -0,0 +1,125 @@
+/** CSci-4611 In-Class Example */
+
+#include "angry_vectors.h"
+
+#include <iostream>
+#include <sstream>
+
+
+
+AngryVectors::AngryVectors() : GraphicsApp(1024,768, "AngryVectors"), time_(0.0), playing_(true), pauseBtn_(NULL) {
+}
+
+
+
+AngryVectors::~AngryVectors() {
+}
+
+
+
+void AngryVectors::OnPauseBtnPressed() {
+    playing_ = !playing_;
+    if (playing_) {
+        pauseBtn_->setCaption("Pause");
+    }
+    else {
+        pauseBtn_->setCaption("Play");
+    }
+}
+
+
+Point3 AngryVectors::CalcBirdPos(double t) {
+    // projectile motion for the "bird"
+    double e = t / 4.0;
+    double x = e * 52.0 - 30.0;
+    double y = 30.0 * (-e * e + 1.2 * e) + 5.0;
+    double z = -35.0;
+    return Point3((float)x, (float)y, (float)z);
+}
+
+Vector3 AngryVectors::CalcBirdVel(double t) {
+    return CalcBirdPos(time_+0.1) - CalcBirdPos(time_);
+}
+
+
+void AngryVectors::UpdateSimulation(double dt)  {
+    if (playing_) {
+        time_ += (float)dt;
+        if (time_ > 4) {
+            time_ = 0.0;
+        }
+    }
+}
+
+
+
+void AngryVectors::InitNanoGUI() {
+    // Setup the GUI window
+    nanogui::Window *window = new nanogui::Window(screen(), "Controls");
+    window->setPosition(Eigen::Vector2i(10, 10));
+    window->setSize(Eigen::Vector2i(400,200));
+    window->setLayout(new nanogui::GroupLayout());
+    
+    pauseBtn_ = new nanogui::Button(window, "Pause");
+    pauseBtn_->setCallback(std::bind(&AngryVectors::OnPauseBtnPressed, this));
+    pauseBtn_->setTooltip("Toggle playback.");
+    
+    screen()->performLayout();
+}
+
+
+
+void AngryVectors::InitOpenGL() {
+    // Set up the camera in a good position to see the entire scene
+    proj_matrix_ = Matrix4::Perspective(60.0f, aspect_ratio(), 0.01f, 100.0f);
+    view_matrix_ = Matrix4::LookAt(Point3(0,2,15), Point3(0,0,0), Vector3(0,1,0));
+    glClearColor(0.2f, 0.6f, 1.0f, 1.0f);
+}
+
+
+void AngryVectors::DrawUsingOpenGL() {
+    // ground
+    Matrix4 ground_matrix = Matrix4::Translation(Vector3(0,-2,-50)) * Matrix4::Scale(Vector3(80, 2, 100));
+    quick_shapes_.DrawCube(ground_matrix, view_matrix_, proj_matrix_, Color(0.3f, 0.9f, 0.4f));
+  
+    // 3 targets
+    Matrix4 target1_matrix = Matrix4::Translation(Vector3(21, 6, -35)) * Matrix4::Scale(Vector3(1.5, 6, 10));
+    quick_shapes_.DrawCube(target1_matrix, view_matrix_, proj_matrix_, Color(0.6f, 0.4f, 0.2f));
+
+    Matrix4 target2_matrix = Matrix4::Translation(Vector3(25, 6, -35)) * Matrix4::Scale(Vector3(1.5, 6, 10));
+    quick_shapes_.DrawCube(target2_matrix, view_matrix_, proj_matrix_, Color(0.6f, 0.4f, 0.2f));
+
+    Matrix4 target3_matrix = Matrix4::Translation(Vector3(23, 18, -35)) * Matrix4::Scale(Vector3(1.5, 6, 10));
+    quick_shapes_.DrawCube(target3_matrix, view_matrix_, proj_matrix_, Color(0.6f, 0.4f, 0.2f));
+
+    // launcher
+    Matrix4 launcher_matrix;
+    quick_shapes_.DrawLineSegment(launcher_matrix, view_matrix_, proj_matrix_, Color(0,0,0),
+                                  Point3(-30,-2,-35), Point3(-30, 5, -35), 0.75);
+    
+    // bird
+    Point3 bird_pos = CalcBirdPos(time_);
+    Matrix4 bird_matrix = Matrix4::Translation(bird_pos - Point3::Origin());
+    quick_shapes_.DrawSphere(bird_matrix, view_matrix_, proj_matrix_, Color(1,0,0));
+    
+    
+    
+    // DEBUGGING OUTPUT
+    
+    // this is useful to be able to see where the origin is and the scale.  The
+    // axes are drawn at (0,0,0), and each arrow is 1 unit long.  The red axis is X,
+    // green is Y, and blue is Z.
+    Matrix4 identity;
+    quick_shapes_.DrawAxes(identity, view_matrix_, proj_matrix_);
+    
+    
+    // TODO: make sure bird velocity makes sense. (hint, hint)
+
+   
+
+}
+
+
+
+
+