notgne2/tuxpaint-pencil-sharpener
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grass perspective should be linear, not exponential

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This commit is contained in:
Albert Cahalan 2004-12-18 16:07:14 +00:00
parent 0831554ea0
commit 85fb346304
1 changed files with 16 additions and 1 deletions
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17
src/tuxpaint.c
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@ -4076,6 +4076,21 @@ static void magic_draw(int x1, int y1, int x2, int y2, int button_down)
} }
// this one rounds down
static int log2int(int x)
{
int y = 0;
if(x<=1)
return 0;
x >>= 1;
while(x)
{
x >>= 1;
y++;
}
return y;
}
/* Draw the current brush in the current color: */ /* Draw the current brush in the current color: */
static void blit_magic(int x, int y, int button_down) static void blit_magic(int x, int y, int button_down)
@ -4492,7 +4507,7 @@ static void blit_magic(int x, int y, int button_down)
bucket += (3.5+(rand()/(double)RAND_MAX)) * 7.0; bucket += (3.5+(rand()/(double)RAND_MAX)) * 7.0;
while (bucket >= 0) while (bucket >= 0)
{ {
int rank = ((double)y/canvas->h) * (0.99+(rand()/(double)RAND_MAX)) * 4; int rank = log2int( ((double)y/canvas->h) * (0.99+(rand()/(double)RAND_MAX)) * 64 );
int ah = 1<<rank; int ah = 1<<rank;
bucket -= ah; bucket -= ah;
src.x = (rand() % 4) * 64; src.x = (rand() % 4) * 64;