Merge branch 'support-code' of https://github.umn.edu/umn-csci-4611-f21/shared-upstream

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+/** CSci-4611 Assignment 5:  Art Render
+ */
+
+#ifndef ART_RENDER_APP_H_
+#define ART_RENDER_APP_H_
+
+#include <mingfx.h>
+using namespace mingfx;
+
+#include "edge_mesh.h"
+
+#include <string>
+#include <vector>
+
+
+/** Main application class for the ArtRender project.*/
+class ArtRenderApp : public GraphicsApp {
+public:
+
+	ArtRenderApp();
+	virtual ~ArtRenderApp();
+
+	/// Rereads the shader programs file their txt files and recompiles them
+	void OnReloadBtnPressed();
+
+	/// Switches to gouraud shading
+	void OnGouraudBtnPressed();
+
+	/// Switches to phong shading
+	void OnPhongBtnPressed();
+
+	/// Switches to an artsy, toon rendering style
+	void OnArtsyBtnPressed();
+
+	/// Callbacks used for UniCam camera controls
+	void OnLeftMouseDown(const Point2& pos);
+	void OnLeftMouseDrag(const Point2& pos, const Vector2& delta);
+	void OnLeftMouseUp(const Point2& pos);
+	void UpdateSimulation(double dt);
+
+	/// The GUI is setup here
+	void InitNanoGUI();
+
+	/// Models and shaders are loaded here, note these cannot be loaded within
+	/// the constructor because the OpenGL context is not yet created at the
+	/// time the constructor is called.
+	void InitOpenGL();
+
+	/// Rendering using shaders goes here.
+	void DrawUsingOpenGL();
+
+private:
+
+	void LoadShadersAndTextures();
+
+	// 0 = gouraud, 1 = phong, 2 = artsy
+	int shader_style_;
+
+	// 0 for the first model loaded, ...
+	int current_model_;
+
+	// filenames, also used as the caption for the buttons
+	std::vector<std::string> model_files_;
+	// triangle mesh stored for each model file
+	std::vector<Mesh> meshes_;
+	// the "edge mesh" computed from the triangle mesh for each file
+	std::vector<EdgeMesh> edge_meshes_;
+
+	// position for the light source used in the shaders
+	Point3 light_pos_;
+
+	// per-vertex gouraud shading
+	ShaderProgram gouraud_shaderprog_;
+
+	// standard per-pixel phong shading
+	ShaderProgram phong_shaderprog_;
+
+	// toon shading
+	ShaderProgram artsy_shaderprog_;
+	// textures to use for calculating lighting cutoffs inside the toon shader
+	Texture2D diffuse_ramp_;
+	Texture2D specular_ramp_;
+
+	// special program to use for drawing silhouette edges with the edge mesh
+	ShaderProgram outline_shaderprog_;
+
+
+
+	// Unicam stores/sets the view matrix based on mouse interaction since it
+	// is in charge of moving around the camera.
+	UniCam uni_cam_;
+	Matrix4 proj_matrix_;
+
+	// QuickShapes is just used to draw a little yellow sphere at the position
+	// of the light.
+	QuickShapes quick_shapes_;
+
+	// A list of paths to search for data files (images and shaders)
+	std::vector<std::string> search_path_;
+};
+
+#endif
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