Camera point at & more tests

headers/renderer.hpp

@@ -25,26 +25,24 @@ namespace Renderer {
 			Object(glm::vec3 pos);
 			Object(glm::vec3 pos, glm::vec3 angle);
 
-			glm::mat4 getModelTransform();
 			void transform(glm::mat4 T);
 			void scale(glm::vec3 vscale);
 
-			glm::mat4 getPositionTransform();
 			void setPosition(glm::vec3 pos);
 			void translate(glm::vec3 dpos);
 
-			glm::mat4 getRotationTransform();
 			void setRotation(glm::vec3 angle);
 			void rotate(glm::vec3 dangle);
-		private:
+		protected:
 			void updatePositionTransform();
 			void updateRotationTransform();
 
-			glm::vec3 position = glm::vec3(0.0f, 0.0f, 0.0f);
-			glm::vec3 angle = glm::vec3(0.0f, 0.0f, 0.0f);
 			glm::mat4 positionTransform = glm::mat4(1.0f);
 			glm::mat4 rotationTransform = glm::mat4(1.0f);
 			glm::mat4 modelTransform = glm::mat4(1.0f);
+
+			glm::vec3 position = glm::vec3(0.0f, 0.0f, 0.0f);
+			glm::vec3 angle = glm::vec3(0.0f, 0.0f, 0.0f);
 	};
 
 	class Camera : public Object {
@@ -54,7 +52,10 @@ namespace Renderer {
 			Camera(GLFWwindow* win, glm::vec3 pos, glm::vec3 angle);
 
 			void setFOV(float deg);
+			void pointAt(glm::vec3 target);
+
 			glm::mat4 projection = glm::mat4(1.0f);
+			glm::mat4 view = glm::mat4(1.0f);
 		private:
 			GLFWwindow* window;
 	};

shaders/vertex.glsl

@@ -10,13 +10,12 @@ uniform mat4 modelRotation = mat4(1.0);
 uniform mat4 modelPosition = mat4(1.0);
 uniform mat4 model = mat4(1.0);
 
-uniform mat4 camPos = mat4(1.0);
-uniform mat4 camRot = mat4(1.0);
-uniform mat4 camProjection = mat4(1.0);
+uniform mat4 view = mat4(1.0);
+uniform mat4 projection = mat4(1.0);
 
 void main() {
-	//			  projection 	  {	view		  }   {				model				    }
-	gl_Position = camProjection * (camRot * camPos) * (modelRotation * modelPosition * model) * vec4(aPos, 1.0);
+	//			  projection 	  view 	 {				model				   }
+	gl_Position = projection * view * (modelRotation * modelPosition * model) * vec4(aPos, 1.0);
 	VertexColor = vec4(aColor, 1.0);
 	TexCoord = aTexCoord;
 } 

src/main.cpp

@@ -27,9 +27,9 @@ void processInput(GLFWwindow *win) {
 
 void renderCallback() {
 	// Make background
-	// glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
+	glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
 	// glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
-	glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
+	// glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 }
 
@@ -152,10 +152,10 @@ int main() {
 	Renderer::Scene scene(win);
 
 	Renderer::TexturedObject ro(verts, indices);
-	ro.setPosition(glm::vec3(0.2f, -1.0f, -8.0f));
+	// ro.setPosition(glm::vec3(0.2f, -1.0f, -8.0f));
 
 	Renderer::TexturedObject ro2(verts, indices);
-	ro2.setPosition(glm::vec3(0.5f, 0.0, -8.0f));
+	// ro2.setPosition(glm::vec3(0.5f, 0.0, -8.0f));
 
 	ro2.setTexture("assets/textures/meep.jpg"); // TODO: fix texture bug
 	ro.setTexture(RUSTY_METAL_TEXTURE);
@@ -174,13 +174,17 @@ int main() {
 		float gVal = sin(time);
 
 		// Move the camera left and right
-		scene.camera.setRotation(glm::vec3(gVal * 5, 5.0f * gVal, gVal * 10.0f));
+		// scene.camera.setRotation(glm::vec3(gVal * 5, 5.0f * gVal, gVal * 20.0f));
 		// scene.camera.translate(glm::vec3(0.0f, 0.0f, 0.02f + gVal/100.0f));
+		scene.camera.pointAt(glm::vec3(0.0f, 0.0f, 0.0f));
+		scene.camera.setPosition(glm::vec3(cos(time)*10.0f, 0.0f, gVal*10.0f));
 
 		// Move the objects & stuff 
 		float rotang = time;
 		ro.rotate(glm::vec3(0.0f, 0.0f, gVal));
 
+		ro2.setPosition(glm::vec3(0.0f, gVal * 2.0f, 1.0f + gVal*5.0f));
+
 		// Render new frame
 		scene.render();
 

src/renderer.cpp

@@ -22,8 +22,6 @@ namespace Renderer {
 		setRotation(angle);
 	}
 
-	glm::mat4 Object::getModelTransform() { return modelTransform; }
-
 	void Object::scale(glm::vec3 vscale) {
 		glm::mat4 T = glm::mat4(1.0f);
 		T = glm::scale(T, vscale);
@@ -34,8 +32,6 @@ namespace Renderer {
 		modelTransform = T;
 	}
 
-	glm::mat4 Object::getPositionTransform() { return positionTransform; }
-
 	void Object::updatePositionTransform() {
 		glm::mat4 T = glm::mat4(1.0f);
 		positionTransform = glm::translate(T, position);
@@ -51,14 +47,13 @@ namespace Renderer {
 		updatePositionTransform();
 	}
 
-	glm::mat4 Object::getRotationTransform() { return rotationTransform; }
-
 	void Object::updateRotationTransform() {
 		float x_Ang, y_Ang, z_Ang;
 		x_Ang = angle[0];
 		y_Ang = angle[1];
 		z_Ang = angle[2];
 
+		// TODO: make better
 		glm::mat4 T = glm::mat4(1.0f);
 		T = glm::rotate(T, glm::radians(x_Ang), glm::vec3(1.0f, 0.0f, 0.0f));
 		T = glm::rotate(T, glm::radians(y_Ang), glm::vec3(0.0f, 1.0f, 0.0f));
@@ -120,6 +115,11 @@ namespace Renderer {
 		projection = glm::perspective(glm::radians(fov), (float)width / (float)height, NEAR_PLANE, FAR_PLANE);
 	}
 
+	void Camera::pointAt(glm::vec3 target) {
+		view = glm::lookAt(position, target, glm::vec3(0.0f, 1.0f, 0.0f));
+	}
+
+
 	// RenderObject
 	RenderObject::RenderObject(std::vector<float> verts, std::vector<unsigned int> indices) 
 		: shader(VERT_SHADER_SRC_FILE, FRAG_SHADER_SRC_FILE) {
@@ -164,13 +164,12 @@ namespace Renderer {
 
 	// TODO: Make prerender instead of render
 	void RenderObject::render(GLFWwindow* win, Camera cam) {
-		shader.setMat4("modelPosition", getPositionTransform());
-		shader.setMat4("modelRotation", getRotationTransform());
-		shader.setMat4("model", getModelTransform());
+		shader.setMat4("modelPosition", positionTransform);
+		shader.setMat4("modelRotation", rotationTransform);
+		shader.setMat4("model", modelTransform);
 
-		shader.setMat4("camPos", cam.getPositionTransform());
-		shader.setMat4("camRot", cam.getRotationTransform());
-		shader.setMat4("camProjection", cam.projection);
+		shader.setMat4("view", cam.view);
+		shader.setMat4("projection", cam.projection);
 
 		shader.use();