What is Picture to People ?
"Picture to People" (P2P) is a huge Computer Graphics project. It was started to create new softwares able to make 2D drawing, 3D rendering, vexel drawing, text effects, photo effects, image filtering and other complex Computer Graphics operations. It has been made from scratch, including its low level Computer Graphics libraries like Maccala. Nowadays, most final features produced for this project are released as free online tools available from its official website. This blog talks about Computer Graphics, mainly concerning Picture to People development.
Saturday, June 15, 2013
Sub-pixel precision drawing for vector based render engines
I have received some emails from colleagues asking about this change after I talked about this improvement here. They are CG developers too and were kind of confused about what I meant in my previous post about this subject called "Subpixel vector drawing with professional antialiasing".
First of all, don't be confused between "sub-pixel positioning" and "sub-pixel precision". In the first one, we know how to properly draw the bodies despite they can be in fractionary positions, but it doesn't mean we can draw bodies smaller in size than one pixel.
As an example, I borrowed an image from the webpage about Maccala's features. You can see many line segments with a progressive thickness. All of them are positioned in sub-pixels positions, but just the first one is thinner than one pixel (its thickness is 0.5).
Of course, nothing comes really for free. To keep the professional anti-aliased results when using "microscopic" measures, the algorithm must be used with extreme parameters, decreasing its big rendering speed.
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