diff options
Diffstat (limited to 'kms++util/src')
| -rw-r--r-- | kms++util/src/drawing.cpp | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/kms++util/src/drawing.cpp b/kms++util/src/drawing.cpp index 4e5c6c1..8885112 100644 --- a/kms++util/src/drawing.cpp +++ b/kms++util/src/drawing.cpp @@ -1,4 +1,6 @@ +#include <cmath> + #include <kms++/kms++.h> #include <kms++util/kms++util.h> @@ -198,6 +200,22 @@ void draw_rect(IFramebuffer &fb, uint32_t x, uint32_t y, uint32_t w, uint32_t h, } } +void draw_horiz_line(IFramebuffer& fb, uint32_t x1, uint32_t x2, uint32_t y, RGB color) +{ + for (uint32_t x = x1; x <= x2; ++x) + draw_rgb_pixel(fb, x, y, color); +} + +void draw_circle(IFramebuffer& fb, int32_t xCenter, int32_t yCenter, int32_t radius, RGB color) +{ + int32_t r2 = radius * radius; + + for (int y = -radius; y <= radius; y++) { + int32_t x = (int)(sqrt(r2 - y * y) + 0.5); + draw_horiz_line(fb, xCenter - x, xCenter + x, yCenter - y, color); + } +} + static bool get_char_pixel(char c, uint32_t x, uint32_t y) { #include "font_8x8.h" |