From 7be42dc83ff694da2f1e66a59a14fe51d3e18fba Mon Sep 17 00:00:00 2001 From: Leo Tenenbaum Date: Tue, 9 Feb 2021 10:15:42 -0500 Subject: case sensitivity, regex --- math.c | 48 ++++++++++++++++++++++++++++++------------------ 1 file changed, 30 insertions(+), 18 deletions(-) (limited to 'math.c') diff --git a/math.c b/math.c index e6e90f3..ab7b859 100644 --- a/math.c +++ b/math.c @@ -607,6 +607,25 @@ static v2i V2I(int x, int y) { return v; } +static void rgba_u32_to_floats(u32 rgba, float floats[4]) { + floats[0] = (float)((rgba >> 24) & 0xFF) / 255.f; + floats[1] = (float)((rgba >> 16) & 0xFF) / 255.f; + floats[2] = (float)((rgba >> 8) & 0xFF) / 255.f; + floats[3] = (float)((rgba >> 0) & 0xFF) / 255.f; +} + +static v4 rgba_u32_to_v4(u32 rgba) { + float c[4]; + rgba_u32_to_floats(rgba, c); + return V4(c[0], c[1], c[2], c[3]); +} + +// returns average of red green and blue components of color +static float rgba_brightness(u32 color) { + u8 r = (u8)(color >> 24), g = (u8)(color >> 16), b = (u8)(color >> 8); + return ((float)r+(float)g+(float)b) * (1.0f / 3); +} + static bool rect_contains_point_v2(v2 pos, v2 size, v2 point) { float x1 = pos.x, y1 = pos.y, x2 = pos.x + size.x, y2 = pos.y + size.y, x = point.x, y = point.y; @@ -671,24 +690,6 @@ static void rect_print(Rect r) { printf("Position: (%f, %f), Size: (%f, %f)\n", r.pos.x, r.pos.y, r.size.x, r.size.y); } -static void rgba_u32_to_floats(u32 rgba, float floats[4]) { - floats[0] = (float)((rgba >> 24) & 0xFF) / 255.f; - floats[1] = (float)((rgba >> 16) & 0xFF) / 255.f; - floats[2] = (float)((rgba >> 8) & 0xFF) / 255.f; - floats[3] = (float)((rgba >> 0) & 0xFF) / 255.f; -} - -static v4 rgba_u32_to_v4(u32 rgba) { - float c[4]; - rgba_u32_to_floats(rgba, c); - return V4(c[0], c[1], c[2], c[3]); -} - -// returns average of red green and blue components of color -static float rgba_brightness(u32 color) { - u8 r = (u8)(color >> 24), g = (u8)(color >> 16), b = (u8)(color >> 8); - return ((float)r+(float)g+(float)b) * (1.0f / 3); -} static float rects_intersect(Rect r1, Rect r2) { if (r1.pos.x >= r2.pos.x + r2.size.x) return false; // r1 is to the right of r2 @@ -709,3 +710,14 @@ static bool rect_clip_to_rect(Rect *clipped, Rect clipper) { clipped->size.y = clampf(clipped->size.y, 0, clipper.pos.y + clipper.size.y - clipped->pos.y); return clipped->size.x > 0 && clipped->size.y > 0; } + +// removes `amount` from all sides of r +static Rect rect_shrink(Rect r, float amount) { + r.pos.x += amount; + r.pos.y += amount; + r.size.x -= 2 * amount; + r.size.y -= 2 * amount; + r.size.x = maxf(r.size.x, 0); + r.size.y = maxf(r.size.y, 0); + return r; +} \ No newline at end of file -- cgit v1.2.3