diff options
Diffstat (limited to '3de.c')
| -rw-r--r-- | 3de.c | 34 |
1 files changed, 34 insertions, 0 deletions
@@ -1,10 +1,42 @@ #include "config.h" +#include "maths.h" #include "memory.h" #include "plat.h" #include "render.h" +#include "torus.h" #include <stdio.h> +void draw_spinny(Renderer* r, Colour c) { + static int a = 0; + int y; int x = y = 100 << fbits; + x -= sin_table[a & sin_table_mask] * 10; + y += cos_table[a & sin_table_mask] * 10; + ren_point(r, c, x >> fbits, y >> fbits); + a += 20; +} + +void draw_torus(Renderer* r, Colour c) { + static int a = 0; + const int pc = sizeof torus_points / sizeof *torus_points; + int asp = (r->clip.w << fbits) / r->clip.h; + int p[4] = { 0, 0, 5 << fbits, f1 }; + int i; + mtx_push_trans(p); + mtx_push_rot_x(a); + mtx_push_rot_y(a); + mtx_push_rot_z(a); + for (i = 0; i < pc; i += 3) { + vec_cpy(p, &torus_points[i], 3); + mtx_apply(mtx_peek(), p); + persp(p, asp); + ndc2clip((int*)&r->clip, p); + ren_point(r, c, p[0], p[1]); + } + mtx_popn(4); + a += 3; +} + int entrypoint(int argc, const char** argv, Arena* a) { App* app; Renderer r; @@ -14,6 +46,7 @@ int entrypoint(int argc, const char** argv, Arena* a) { Colour blue = make_aliceblue(); (void)argc; (void)argv; + init_maths(); init_heap( &h, arena_alloc(a, app_memory_size), @@ -34,6 +67,7 @@ int entrypoint(int argc, const char** argv, Arena* a) { ren_text(&r, blue, 3, 13, buf); sprintf(buf, "MOUSE: %d, %d", app->mx, app->my); ren_text(&r, blue, 3, 23, buf); + draw_torus(&r, blue); ren_end(&r); app_end(app); fps_update(&f); |