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Index › Programming Questions & Help › Syntax Questions › Reflect 180 degrees, easy

Remitoo YaBB Newbies Offline Posts: 8	Reflect 180 degrees, easy? Aug 23rd, 2009, 10:58am   I have a quad shape that I would like to reflect (like a mirror), while still keeping the original shape? Is this possible without making a new quad() shape?

antiplastik YaBB Moderator Offline Posts: 699 France	Re: Reflect 180 degrees, easy? Reply #1 - Aug 23rd, 2009, 1:25pm   You can do the trick by copying the pixels line by line : Quote: background(255); quad(20,1,50,20,60,48,20,40); loadPixels(); for (int y = 0; y < height/2; y++) {   for (int x = 0; x < width; x++) {     pixels[(height-1-y)*width+x] = pixels[y*width+x];   } } updatePixels();

ben_hem Senior Member Offline Posts: 399 CA, US	Re: Reflect 180 degrees, easy? Reply #2 - Aug 23rd, 2009, 8:21pm   Or, if you're using P3D or OPENGL mode, you could use: quad(your quad points); pushMatrix(); translate(xshift, yshift); // move somewhere else rotateY(PI): // spin 180° on the Y axis (backwards), and/or: rotateX(PI): // spin 180° on the X axis (upside-down) quad(your quad points); popMatrix();