C++ Camera::setNearAndFarPlanes方法代码示例

void AppMain() {
    if(!glfwInit())
        throw std::runtime_error("glfwInit failed");
    
    glfwOpenWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
    glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 3);
    glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 2);
    glfwOpenWindowHint(GLFW_WINDOW_NO_RESIZE, GL_FALSE);
    
    if(!glfwOpenWindow(SCREEN_SIZE.x, SCREEN_SIZE.y, 8, 8, 8, 8, 0, 0, GLFW_WINDOW))
        throw std::runtime_error("glfwOpenWindow failed. Can your hardware handle OpenGL 3.2?");
    
    glewExperimental = GL_TRUE; //stops glew crashing on OSX :-/
    if(glewInit() != GLEW_OK)
        throw std::runtime_error("glewInit failed");
    
    
    std::cout << "OpenGL version: " << glGetString(GL_VERSION) << std::endl;
    std::cout << "GLSL version: " << glGetString(GL_SHADING_LANGUAGE_VERSION) << std::endl;
    std::cout << "Vendor: " << glGetString(GL_VENDOR) << std::endl;
    std::cout << "Renderer: " << glGetString(GL_RENDERER) << std::endl;
    
    if(!GLEW_VERSION_3_2)
        throw std::runtime_error("OpenGL 3.2 API is not available.");
    
    glfwDisable(GLFW_MOUSE_CURSOR);
    glfwSetMousePos(0,0);
    glfwSetMouseWheel(0);
    
    LoadShaders();
    LoadTriangle();
    
    //intialise the Camera position
    gCamera.setPosition(glm::vec3(0,0,4));
    gCamera.setViewportAspectRatio(SCREEN_SIZE.x / SCREEN_SIZE.y);
    gCamera.setNearAndFarPlanes(0.5, 100.0f);
    Axis = glm::vec3(0,1,0);
    
    //intialise the Light attribute
    gLight.position = glm::vec3(0.0f,0.1f,-0.1f);
    gLight.intensities = glm::vec3(0.8,0.78,1); // white light
    gLight.attenuation = 0.2f;
    gLight.ambientCoefficient = 0.005f;
    
    double lastTime = glfwGetTime();
    while(glfwGetWindowParam(GLFW_OPENED)){
        
        double thisTime = glfwGetTime();
        Update(thisTime - lastTime);
        lastTime  = thisTime;
        Render();
        
    }
    
    glfwTerminate();
}

// the program starts here
void AppMain() {
    // initialise GLFW
    if(!glfwInit())
        throw std::runtime_error("glfwInit failed");

    // open a window with GLFW
    glfwOpenWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
    glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 3);
    glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 2);
    glfwOpenWindowHint(GLFW_WINDOW_NO_RESIZE, GL_TRUE);
    if(!glfwOpenWindow((int)SCREEN_SIZE.x, (int)SCREEN_SIZE.y, 8, 8, 8, 8, 16, 0, GLFW_WINDOW))
        throw std::runtime_error("glfwOpenWindow failed. Can your hardware handle OpenGL 3.2?");

    // GLFW settings
    glfwDisable(GLFW_MOUSE_CURSOR);
    glfwSetMousePos(0, 0);
    glfwSetMouseWheel(0);

    // initialise GLEW
    glewExperimental = GL_TRUE; //stops glew crashing on OSX :-/
    if(glewInit() != GLEW_OK)
        throw std::runtime_error("glewInit failed");

    // GLEW throws some errors, so discard all the errors so far
    while(glGetError() != GL_NO_ERROR) {}

    // print out some info about the graphics drivers
    std::cout << "OpenGL version: " << glGetString(GL_VERSION) << std::endl;
    std::cout << "GLSL version: " << glGetString(GL_SHADING_LANGUAGE_VERSION) << std::endl;
    std::cout << "Vendor: " << glGetString(GL_VENDOR) << std::endl;
    std::cout << "Renderer: " << glGetString(GL_RENDERER) << std::endl;

    // make sure OpenGL version 3.2 API is available
    if(!GLEW_VERSION_3_2)
        throw std::runtime_error("OpenGL 3.2 API is not available.");

    // OpenGL settings
    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LESS);

    // initialise the gWoodenCrate asset
    LoadWoodenCrateAsset();

    // create all the instances in the 3D scene based on the gWoodenCrate asset
    CreateInstances();

    // setup gCamera
    gCamera.setPosition(glm::vec3(-4,0,17));
    gCamera.setViewportAspectRatio(SCREEN_SIZE.x / SCREEN_SIZE.y);
    gCamera.setNearAndFarPlanes(0.5f, 100.0f);

    // setup gLight
    gLight.position = glm::vec3(-4,0,4);
    gLight.intensities = glm::vec3(1,1,1); //white
    gLight.attenuation = 0.2f;
    gLight.ambientCoefficient = 0.005f;

    // run while the window is open
    double lastTime = glfwGetTime();
    while(glfwGetWindowParam(GLFW_OPENED)){
        // update the scene based on the time elapsed since last update
        double thisTime = glfwGetTime();
        Update((float)(thisTime - lastTime));
        lastTime = thisTime;

        // draw one frame
        Render();

        // check for errors
        GLenum error = glGetError();
        if(error != GL_NO_ERROR)
            std::cerr << "OpenGL Error " << error << ": " << (const char*)gluErrorString(error) << std::endl;

        //exit program if escape key is pressed
        if(glfwGetKey(GLFW_KEY_ESC))
            glfwCloseWindow();
    }

    // clean up and exit
    glfwTerminate();
}

// the program starts here
void AppMain() {
    // initialise GLFW
    glfwSetErrorCallback(OnError);
    if(!glfwInit())
        throw std::runtime_error("glfwInit failed");

    // open a window with GLFW
    glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
    glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
    gWindow = glfwCreateWindow((int)SCREEN_SIZE.x, (int)SCREEN_SIZE.y, "OpenGL Tutorial", NULL, NULL);
    if(!gWindow)
        throw std::runtime_error("glfwCreateWindow failed. Can your hardware handle OpenGL 3.2?");

    // GLFW settings
    glfwSetInputMode(gWindow, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
    glfwSetCursorPos(gWindow, 0, 0);
    glfwSetScrollCallback(gWindow, OnScroll);
    glfwMakeContextCurrent(gWindow);

    // initialise GLEW
    glewExperimental = GL_TRUE; //stops glew crashing on OSX :-/
    if(glewInit() != GLEW_OK)
        throw std::runtime_error("glewInit failed");

    // GLEW throws some errors, so discard all the errors so far
    while(glGetError() != GL_NO_ERROR) {}

    // print out some info about the graphics drivers
    std::cout << "OpenGL version: " << glGetString(GL_VERSION) << std::endl;
    std::cout << "GLSL version: " << glGetString(GL_SHADING_LANGUAGE_VERSION) << std::endl;
    std::cout << "Vendor: " << glGetString(GL_VENDOR) << std::endl;
    std::cout << "Renderer: " << glGetString(GL_RENDERER) << std::endl;

    // make sure OpenGL version 3.2 API is available
    if(!GLEW_VERSION_3_2)
        throw std::runtime_error("OpenGL 3.2 API is not available.");

    // OpenGL settings
    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LESS);
    glEnable(GL_BLEND);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

    // initialise the gWoodenCrate asset
    LoadWoodenCrateAsset();

    // create all the instances in the 3D scene based on the gWoodenCrate asset
    CreateInstances();

    // setup gCamera
    gCamera.setPosition(glm::vec3(-4,0,17));
    gCamera.setViewportAspectRatio(SCREEN_SIZE.x / SCREEN_SIZE.y);
    gCamera.setNearAndFarPlanes(0.5f, 100.0f);

    // setup gLight
    gLight.position = gCamera.position();
    gLight.intensities = glm::vec3(1,1,1); //white

    // run while the window is open
    float lastTime = (float)glfwGetTime();
    while(!glfwWindowShouldClose(gWindow)){
        // process pending events
        glfwPollEvents();

        // update the scene based on the time elapsed since last update
        float thisTime = (float)glfwGetTime();
        Update(thisTime - lastTime);
        lastTime = thisTime;

        // draw one frame
        Render();

        // check for errors
        GLenum error = glGetError();
        if(error != GL_NO_ERROR)
            std::cerr << "OpenGL Error " << error << std::endl;

        //exit program if escape key is pressed
        if(glfwGetKey(gWindow, GLFW_KEY_ESCAPE))
            glfwSetWindowShouldClose(gWindow, GL_TRUE);
    }

    // clean up and exit
    glfwTerminate();
}

int main(void)
{
	GLFWwindow* window;

	/* Initialize the library */
	if (!glfwInit())
		return -1;

	/* Create a windowed mode window and its OpenGL context */
	window = glfwCreateWindow(800, 600, "Hello World", NULL, NULL);
	if (!window)
	{
		glfwTerminate();
		return -1;
	}

	glfwSetScrollCallback(window, OnScroll);

	// GLFW settings
	glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
	glfwSetCursorPos(window, 0, 0);

	/* Make the window's context current */
	glfwMakeContextCurrent(window);

	if (glewInit() != GLEW_OK)
	{
		glfwTerminate();
		return -1;
	}

	// print out some info about the graphics drivers
	std::cout << "OpenGL version: " << glGetString(GL_VERSION) << std::endl;
	std::cout << "GLSL version: " << glGetString(GL_SHADING_LANGUAGE_VERSION) << std::endl;
	std::cout << "Vendor: " << glGetString(GL_VENDOR) << std::endl;
	std::cout << "Renderer: " << glGetString(GL_RENDERER) << std::endl;

	// OpenGL settings
	glEnable(GL_DEPTH_TEST);
	glDepthFunc(GL_LESS);
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

	LoadWoodenCrateAsset();

	CreateInstances();

	//glClearColor(0.196078431372549f, 0.3137254901960784f, 0.5882352941176471f, 1);
	glClearColor(0.0f, 0.0f, 0.0f, 1);


	gCamera.setPosition(glm::vec3(3.8, 1, 11));
	gCamera.offsetOrientation(10, 0);
	gCamera.setViewportAspectRatio(800.0f / 600.0f);
	gCamera.setNearAndFarPlanes(0.5f, 100.0f);

	double lastTime = glfwGetTime();
	while (!glfwWindowShouldClose(window))
	{
		/* Poll for and process events */
		glfwPollEvents();

		double thisTime = glfwGetTime();
		Update((float)(thisTime - lastTime), window);
		lastTime = thisTime;

		Render(window);

		// check for errors
		GLenum error = glGetError();
		if (error != GL_NO_ERROR)
			std::cerr << "OpenGL Error " << error << std::endl;

		//exit program if escape key is pressed
		if (glfwGetKey(window, GLFW_KEY_ESCAPE))
			glfwSetWindowShouldClose(window, GL_TRUE);
	}

	glfwTerminate();
	return 0;
}