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#include "example.h"
/*Õý·½Ìå*/
Vec3 verts[] = {
// front face
{1, 1, 1}, {-1, 1, 1}, {-1, -1, 1}, {1, -1, 1},
// back face
{1, 1, -1}, {-1, 1, -1}, {-1, -1, -1}, {1, -1, -1},
};
Color colors[] = {
0xffff0000, 0xff00ff00, 0xffff00ff, 0xff00ffff,
0xff0000ff, 0xff000000, 0xffffff00, 0xffffffff,
};
int cube[] = {
0, 2, 1, 0, 3, 2,
1, 2, 5, 2, 6, 5,
4, 5, 6, 4, 6, 7,
0, 4, 7, 0, 7, 3,
0, 1, 4, 1, 5, 4,
2, 3, 6, 3, 7, 6
};
Mat4 m;
void onloadcube(void* data) {
}
void oneventcube(void* data) {
SDL_Event* e = (SDL_Event*)data;
}
float _t = 0;
void onupdatecube(void*data) {
uint dt = *(uint*)data;
ssr_matrixmode(MATRIX_MODEL);
ssr_loadidentity();
ssr_translate(0, 0, -3);
ssr_rotate(360 * sin(_t += 0.001f), 1, 1, 1);
ssr_matrixmode(MATRIX_PROJECTION);
ssr_loadidentity();
ssr_perspective(100 + 20 * sin(_t * 10), 1.25f, -0.1f, -100);
ssr_matrixmode(MATRIX_VIEW);
ssr_loadidentity();
Vec3 pos = { 0,0,0 }, target = { 0,0,-1 }, up = { 0,1,0 };
ssr_lookat(&pos, &target, &up);
ssr_getmvp(&m);
}
void ondrawcube(void*data) {
ssr_clearcolor(0);
Vec2 proj[8];
for (int i = 0; i < 8; ++i) {
Vec4 v = { verts[i].x, verts[i].y ,verts[i].z ,1 }, temp;
mat4_applytovec4(&m, &v, &temp);
temp.x /= temp.w;
temp.y /= temp.w;
temp.z /= temp.w;
//vec4_print(&temp);
proj[i].x = temp.x;
proj[i].y = temp.y;
}
for (int j = 1; j < sizeof(cube) / sizeof(int); ++j) {
int fromx = proj[cube[j]].x * 250.f + 250, fromy = 200 - proj[cube[j]].y * 200.f;
int tox = proj[cube[j - 1]].x * 250.f + 250, toy = 200 - proj[cube[j - 1]].y * 200.f;
ssrR_putline(fromx, fromy , tox, toy, 0xffff0000);
}
Vec2 v1 = { 0, 0 }, v2 = { 3, 1 }, v3 = {1, 5};
float area = ssrR_area(&v1, &v2, &v3);
printf("%f\n", area);
}
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