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| Anti-aliasing
was achieved by calculating the color of an imaginary pixel that lies between
a cluster of actual pixels. In other words, whereas an Image class offers
a method similar to: Color getColor(int x, int y) we needed a method with the signature: Color getColor(double x, double y) This was achieved by blending the four actual pixels that surround any imaginary double-precision pixel. Its color value is based on the weighted average of its distance to the four surrounding pixels, as demonstrated in the applet below: |