58 lines
950 B
C
58 lines
950 B
C
struct FILE* fpPPM;
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int y;
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float pi=3.141592;
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int iH=200;
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print_Collumn(iR,iG,iB)
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int iR;
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int iG;
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int iB;
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{ extern int fprintf(struct FILE*,char*,...);
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char* szFmt="%d %d %d\n";
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fprintf( fpPPM,szFmt,iR,iG,iB );
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}
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put_Header()
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{ char* szHead="P3\n#\n200 200\n255\n";
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fpPPM=fopen( "out.ppm","w" );
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fwrite( szHead,1,strlen(szHead),fpPPM );
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}
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print_Done()
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{ fclose( fpPPM );
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}
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put_Row(iW)
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int iW;
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{ int x;
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for(x=0;x<iW;x++)
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{ float bx=x;
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float by=y;
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float v;
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float r;
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float g;
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float b;
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v = sin(-bx/32.);
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v += cos(-by/32.);
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v += sin((-bx+-by)/32.);
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v += sin((sqrt(((bx)*(bx))+((by)*(by))+1.))/128.);
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r = sin(v*pi)*127.5+127.5;
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g = (cos(v*pi)*127.5+127.5)*.6;
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print_Collumn( r,g,b*.0 );
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}
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}
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main(_iArgCount,_rgszArgStrings,_rgszEnvPointer)
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int _iArgCount;
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char** _rgszArgStrings;
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char** _rgszEnvPointer;
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{ put_Header( );
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for(y=0;y<iH;y++)
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{ put_Row( 200 );
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}
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print_Done( );
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return(0);
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}
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