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64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/*
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From: http://www.glfw.org/docs/latest/quick.html
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TODO:
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- convert to delayed mode
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- use time deltas and some user input
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*/
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#include "common.h"
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static void error_callback(int error, const char* description) {
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fputs(description, stderr);
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}
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static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) {
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if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
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glfwSetWindowShouldClose(window, GL_TRUE);
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}
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int main(void) {
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GLFWwindow* window;
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float ratio;
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int width, height;
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glfwSetErrorCallback(error_callback);
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if (!glfwInit())
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exit(EXIT_FAILURE);
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window = glfwCreateWindow(640, 480, __FILE__, NULL, NULL);
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if (!window) {
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glfwTerminate();
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exit(EXIT_FAILURE);
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}
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glfwMakeContextCurrent(window);
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glfwSwapInterval(1);
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glfwSetKeyCallback(window, key_callback);
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common_fps_init();
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while (!glfwWindowShouldClose(window)) {
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glfwGetFramebufferSize(window, &width, &height);
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ratio = width / (float) height;
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glViewport(0, 0, width, height);
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glClear(GL_COLOR_BUFFER_BIT);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glOrtho(-ratio, ratio, -1.f, 1.f, 1.f, -1.f);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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glRotatef((float) glfwGetTime() * 50.f, 0.f, 0.f, 1.f);
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glBegin(GL_TRIANGLES);
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glColor3f(1.f, 0.f, 0.f);
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glVertex3f(-0.6f, -0.4f, 0.f);
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glColor3f(0.f, 1.f, 0.f);
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glVertex3f(0.6f, -0.4f, 0.f);
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glColor3f(0.f, 0.f, 1.f);
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glVertex3f(0.f, 0.6f, 0.f);
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glEnd();
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glfwSwapBuffers(window);
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common_fps_print();
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glfwPollEvents();
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}
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glfwDestroyWindow(window);
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glfwTerminate();
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exit(EXIT_SUCCESS);
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}
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