+#include <stdio.h>
#include "opengl.h"
#include "demo.h"
+#include "part.h"
+
+void reg_whitted(void);
int win_width, win_height;
+float win_aspect;
long time_msec;
int demo_init(void)
{
+ int i;
+
if(init_opengl() == -1) {
return -1;
}
glEnable(GL_FRAMEBUFFER_SRGB);
glEnable(GL_MULTISAMPLE);
+ reg_whitted();
+
+ for(i=0; i<num_parts; i++) {
+ if(parts[i]->init() == -1) {
+ fprintf(stderr, "part %s init failed\n", parts[i]->name);
+ return -1;
+ }
+ }
+
+ switch_part(parts[0]);
return 0;
}
void demo_cleanup(void)
{
+ int i;
+
+ for(i=0; i<num_parts; i++) {
+ parts[i]->destroy();
+ }
}
void demo_display(void)
{
- glClearColor(0.05, 0.05, 0.05, 1);
+ long part_time;
+
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- glTranslatef(0, 0, -8);
+ if(!cur_part) return;
+
+ part_time = time_msec - cur_part->start_time;
+ if(part_time < cur_part->in_time) {
+ float t = (float)part_time / cur_part->in_time;
- glFrontFace(GL_CW);
- glutSolidTeapot(1.0);
- glFrontFace(GL_CCW);
+ if(prev_part) {
+ long prev_part_time = time_msec - prev_part->start_time;
+ if(prev_part->draw_out) {
+ prev_part->draw_out(prev_part_time, t);
+ } else {
+ prev_part->draw(prev_part_time);
+ }
+ }
+
+ if(cur_part->draw_in) {
+ cur_part->draw_in(part_time, t);
+ } else {
+ cur_part->draw(part_time);
+ }
+ } else {
+ prev_part = 0;
+ cur_part->draw(part_time);
+ }
}
void demo_reshape(int x, int y)
{
+ win_width = x;
+ win_height = y;
+ win_aspect = (float)x / (float)y;
+
glViewport(0, 0, x, y);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
- gluPerspective(50.0, (float)x / (float)y, 0.5, 500.0);
+ gluPerspective(50.0, win_aspect, 0.5, 500.0);
}
void demo_keyboard(int key, int st)
{
- if(st) {
- switch(key) {
- case 27:
- demo_quit();
- break;
- }
+ if(st && key == 27) {
+ demo_quit();
+ return;
+ }
+
+ if(cur_part && cur_part->keyboard) {
+ cur_part->keyboard(key, st);
}
}
void demo_mbutton(int bn, int st, int x, int y)
{
+ if(cur_part && cur_part->mbutton) {
+ cur_part->mbutton(bn, st, x, y);
+ }
}
void demo_mmotion(int x, int y)
{
+ if(cur_part && cur_part->mmotion) {
+ cur_part->mmotion(x, y);
+ }
}
void demo_sball_motion(int x, int y, int z)