diff options
Diffstat (limited to 'demos/mandelbrot/main.c')
| -rw-r--r-- | demos/mandelbrot/main.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/demos/mandelbrot/main.c b/demos/mandelbrot/main.c index 0c8dc47d..6ab19de1 100644 --- a/demos/mandelbrot/main.c +++ b/demos/mandelbrot/main.c @@ -23,18 +23,24 @@ #include "gdisp.h"
void mandelbrot(float x1, float y1, float x2, float y2) {
- unsigned int i,j;
+ unsigned int i,j, width, height;
uint16_t iter;
color_t color;
+ float fwidth, fheight;
float sy = y2 - y1;
float sx = x2 - x1;
const int MAX = 512;
- for(i = 0; i < 320; i++) {
- for(j = 0; j < 240; j++) {
- float cy = j * sy / 240.0f + y1;
- float cx = i * sx / 320.0f + x1;
+ width = (unsigned int)gdispGetWidth();
+ height = (unsigned int)gdispGetHeight();
+ fwidth = width;
+ fheight = height;
+
+ for(i = 0; i < width; i++) {
+ for(j = 0; j < height; j++) {
+ float cy = j * sy / fheight + y1;
+ float cx = i * sx / fwidth + x1;
float x=0.0f, y=0.0f, xx=0.0f, yy=0.0f;
for(iter=0; iter <= MAX && xx+yy<4.0f; iter++) {
xx = x*x;
@@ -42,8 +48,8 @@ void mandelbrot(float x1, float y1, float x2, float y2) { y = 2.0f*x*y + cy;
x = xx - yy + cx;
}
- color = ((iter << 8) | (iter&0xFF));
- //color = RGB565CONVERT(iter*4, iter*13, iter*10);
+ //color = ((iter << 8) | (iter&0xFF));
+ color = RGB2COLOR(iter<<7, iter<<4, iter);
gdispDrawPixel(i, j, color);
}
}
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