20 lines
468 B
Plaintext
20 lines
468 B
Plaintext
var RD=func(i,j){
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return chr(bits.u32_and(255,j*0.25+i*0.001));
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}
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var GR=func(i,j){
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return chr(bits.u32_and(255,j*0.15));
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}
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var BL=func(i,j){
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return chr(bits.u32_and(255,j*0.05));
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}
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var pixel_write=func(fd,i,j){
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var color=RD(i,j)~GR(i,j)~BL(i,j);
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io.write(fd,color);
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}
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var fd=io.open("a.ppm","wb");
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io.write(fd,"P6\n512 512\n255\n");
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for(var i=0;i<512;i+=1)
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for(var j=0;j<512;j+=1)
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pixel_write(fd,i,j);
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io.close(fd); |