more mandelbrot
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parent
1e6f8726a6
commit
cb4baa4479
2 changed files with 16 additions and 7 deletions
9
Makefile
9
Makefile
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@ -1,11 +1,16 @@
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CFLAGS=-std=c99 -Wall -g
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INDENTOPTS=-kr --no-tabs --braces-on-func-def-line --indent-level2
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all: approximate-pi linked-list
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.PHONY: all
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all: approximate-pi linked-list mandelbrot
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.PHONY: clean
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clean:
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rm -f approximate-pi linked-list *~
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rm -f approximate-pi linked-list mandelbrot *~
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.PHONY: indent
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indent:
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indent $(INDENTOPTS) *.c
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mandelbrot: mandelbrot.c
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$(CC) $(CFLAGS) $(shell sdl-config --cflags) -o $@ $< $(shell sdl-config --libs) -lm
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14
mandelbrot.c
14
mandelbrot.c
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@ -22,8 +22,8 @@ int main(int argc, char *argv[]) {
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printf("y = %d\n", y);
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}
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float complex c = (3.0 * x / 640.0) - 2.0
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+ I * ((2.0 * y / 480.0) - 1.0);
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float complex c = ((3.0 * x / screen->w) - 2.0)
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+ I * ((2.0 * y / screen->h) - 1.0);
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bool diverges = false;
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float complex z = 0;
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@ -36,17 +36,21 @@ int main(int argc, char *argv[]) {
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}
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}
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Uint32 color = 0x00000000;
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Uint32 color;
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if (diverges) {
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color = 0x01010101 * it;
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color = 0x00020304 * it;
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} else {
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color = 0x00000000;
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}
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pixels[i] = color;
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if (y % 10 == 0)
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SDL_Flip(screen);
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}
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if (SDL_MUSTLOCK(screen)) {
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SDL_UnlockSurface(screen);
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}
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SDL_Flip(screen); /* XXX */
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SDL_Flip(screen);
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SDL_Delay(20000);
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