eleni.mutantstargoat.com Git - demo/blob - src/main.cc

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <vector>
   5
   6 /* TODO: fix those */
   7 #include "camera.h"
   8 #include "mesh.h"
   9 #include "object.h"
  10 #include "scene.h"
  11
  12 #include "opengl/opengl.h"
  13 #include "vulkan/vk.h"
  14
  15 /* static functions */
  16
  17 static bool init();
  18 static void cleanup();
  19 static void display();
  20
  21 /* glfw callbacks */
  22 static void key_clbk(GLFWwindow *win, int key, int scancode, int action, int mods);
  23 static void motion_clbk(GLFWwindow *win, double x, double y);
  24 static void mouse_clbk(GLFWwindow *win, int button, int action, int mods);
  25
  26 /* global variables */
  27 bool use_vulkan;
  28
  29 GLFWwindow *win;
  30 int win_w = 800;
  31 int win_h = 600;
  32
  33 OrbitCamera *camera;
  34
  35 /* variables */
  36 static float phi = 25;
  37 static float theta = 0;
  38 static float dist = 4;
  39
  40 // TODO: remove just for test:
  41 static Scene scene;
  42
  43 int main(int argc, char **argv)
  44 {
  45         for(int i=0; i<argc; ++i) {
  46                 if(strcmp(argv[i], "-opengl") == 0) {
  47                         use_vulkan = false;
  48                         printf("Backend: OpenGL.\n");
  49                 }
  50                 else if(strcmp(argv[i], "-vulkan") == 0) {
  51                         use_vulkan = true;
  52                         printf("Backend: Vulkan.\n");
  53                 }
  54                 else {
  55                         printf("No backend specified. Using OpenGL.\n");
  56                 }
  57         }
  58
  59         if(!init()) {
  60                 fprintf(stderr, "Failed to initialize program.\n");
  61                 return 1;
  62         }
  63
  64         glfwSetKeyCallback(win, key_clbk);
  65         glfwSetCursorPosCallback(win, motion_clbk);
  66         glfwSetMouseButtonCallback(win, mouse_clbk);
  67
  68         while(!glfwWindowShouldClose(win)) {
  69                 display();
  70
  71                 glfwSwapBuffers(win);
  72                 glfwPollEvents();
  73         }
  74
  75         atexit(cleanup);
  76         return 0;
  77 }
  78
  79 static bool init()
  80 {
  81         /* TODO */
  82         /*
  83                 TODO changes:
  84                 1- create cam
  85                 2- scene
  86                 3- renderers
  87         */
  88         if(use_vulkan) {
  89                 if(!init_vulkan())
  90                         return false;
  91         }
  92         else {
  93                 if(!init_opengl())
  94                         return false;
  95         }
  96
  97         camera = new OrbitCamera;
  98         camera->set_orbit_params(phi, theta, dist);
  99
 100         if(!scene.load("data/spot/spot_control_mesh.obj")) {
 101                 fprintf(stderr, "Failed to load scene.\n");
 102                 return false;
 103         }
 104
 105         for(size_t i=0; i<scene.objects.size(); ++i) {
 106                 printf("object: %d\n", (int)i);
 107                 printf("mesh: %s\n", scene.objects[i]->mesh->name.c_str());
 108                 printf("material: %s\n", scene.objects[i]->material->name.c_str());
 109                 printf("transform:\n");
 110                 scene.objects[i]->transform.print();
 111         }
 112         return true;
 113 }
 114
 115 static void cleanup()
 116 {
 117         if(use_vulkan) {
 118                 cleanup_vulkan();
 119         }
 120         else {
 121                 cleanup_opengl();
 122         }
 123
 124         delete camera;
 125 }
 126
 127 static void key_clbk(GLFWwindow *win, int key, int scancode, int action, int mods)
 128 {
 129         if(key == GLFW_KEY_ESCAPE && action == GLFW_PRESS) {
 130                 glfwSetWindowShouldClose(win, GLFW_TRUE);
 131         }
 132 }
 133
 134 static double prev_x, prev_y;
 135 static int button;
 136
 137 static void motion_clbk(GLFWwindow *win, double x, double y)
 138 {
 139         switch(button) {
 140         case GLFW_MOUSE_BUTTON_LEFT:
 141                 theta += x - prev_x;
 142                 phi += y - prev_y;
 143
 144                 if(phi < -90)
 145                         phi = -90;
 146                 if(phi > 90)
 147                         phi = 90;
 148
 149                 break;
 150
 151         case GLFW_MOUSE_BUTTON_RIGHT:
 152                 dist *= (y - prev_y) * 0.01 + 1;
 153                 if(dist < 0.0) {
 154                         dist = 0.0;
 155                 }
 156                 break;
 157         }
 158
 159         prev_x = x;
 160         prev_y = y;
 161 }
 162
 163 static void mouse_clbk(GLFWwindow *win, int bn, int action, int mods)
 164 {
 165         button = bn;
 166         glfwGetCursorPos(win, &prev_x, &prev_y);
 167 }
 168
 169 static void display()
 170 {
 171         if(use_vulkan) {
 172                 display_vulkan();
 173         }
 174         else {
 175                 display_opengl();
 176         }
 177 }