diff options
Diffstat (limited to 'examples/triangles.c')
| -rw-r--r-- | examples/triangles.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/examples/triangles.c b/examples/triangles.c new file mode 100644 index 0000000..f995574 --- /dev/null +++ b/examples/triangles.c @@ -0,0 +1,38 @@ +#include "../sponge.h" + +#define SPEED_ABS (2) +#define GRID_SIZE (10) + + +static int32_t offset = 0; +static int32_t speed = SPEED_ABS; + +void init() {} + +void draw_frame(sponge_Texture c) { + sponge_clear(c, 0xFF000000); + offset += speed; + + if (offset > 30) { + speed = -SPEED_ABS; + } else if (offset < -30) { + speed = SPEED_ABS; + } + + int32_t offset_x = c.width / GRID_SIZE; + int32_t offset_y = c.height / GRID_SIZE; + + for (int i = 0; i < GRID_SIZE; i++) { + for (int j = 0; j < GRID_SIZE; j++) { + int32_t x = i * offset_x; + int32_t y = j * offset_y + offset; + + sponge_draw_triangle_col3( + c, + x, y + offset_y, + x + offset_x, y, + x + (offset_x / 4), y + (offset_y / 4), + 0xFFFF0000, 0xFF00FF00, 0xFF0000FF); + } + } +} |
