Imagen:Antialiased.png
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Antialiased.png (12KB, tipo MIME : image/png
)
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La bildo estas kopiita de wikipedia:en. La originala priskribo estas:
antialiased chessboard
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generated by this code, which I (Loisel 03:57 Jan 24, 2003 (UTC)) wrote myself
#include <stdio.h> #include <stdlib.h> #include <math.h> #include <time.h> #include <assert.h> int color(double x, double y) { double t,z; int i,j,k; x=x/128.0-0.5; y=y/1024.0; t=1.0/(y+0.01); z=t*x; i=floor(t); j=floor(z); k=i+j; // printf("%f %f -> %i %i %i\n",t,z,i,j,k%2); return ((k%2)!=0); } double myrand() { return rand()/((double)RAND_MAX); } int main() { int i,j,k,l; double x,y; printf("P5\n128 128\n255\n"); srand(time(0)); for(i=0;i<128;i++) for(j=0;j<128;j++) { k=0; for(l=0;l<255;l++) { x=j+myrand(); y=i+myrand(); k+=color(x,y); } assert(k>=0 && k<=255); k=(k/4)*4; // cygwin bug? fwrite(&k,1,1,stdout); } }
date/time | username | edit summary |
---|---|---|
19:22, 22 December 2004 | en:User:Quadell | (tagged) |
20:47, 6 December 2004 | en:User:Bernard Helmstetter | (code fix up) |
03:57, 24 January 2003 | en:User:Loisel | |
03:57, 24 January 2003 | en:User:Loisel | (antialiased chessboard) |
[edit] Historio de la dosiero
Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version.
Click on date to download the file or see the image uploaded on that date.
- (del) (cur) 13:33, 30 September 2005 . . en:User:Riumplus Riumplus ( en:User_talk:Riumplus Talk) . . 128x128 (11600 bytes) (Losslessly recompressed the image, shrinking file size by 2%)
- (del) (rev) 20:28, 24 January 2003 . . en:User:Loisel Loisel ( en:User_talk:Loisel Talk) . . 128x128 (11861 bytes) (slightly improved image)
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