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Mandlebrot - remove hardware specifics

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Mandlebrot - remove hardware specifics
This commit is contained in:
Andrew Hannam 2012-11-12 17:19:09 +10:00
parent 9566e80854
commit 1c5ca344e8
1 changed files with 11 additions and 5 deletions
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16
demos/mandelbrot/main.c
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@ -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;