Lines Matching refs:pixel
55 * a bi-cubic filter. The bi-cubic has a 2 (output) pixel width, so an 8x8
56 * array of super-sampled points contribute to each output pixel. The value of
185 * pixel. This could be obtained by super sampling the image to infinite
192 * 1) If the pixel coordinate is within the shape assume the sample has the
200 * 2) If the shape is within a square of size 1x1 centered on the pixel assume
201 * that the shape obscures an amount of the pixel equal to its area within
204 * This is the equivalent of 'pixel coverage' alpha calculation or resampling
221 * 0 or 1, depending on whether the sub-pixel is within or outside the shape.
702 pixel(png_uint_16p p, struct arg *args, int nargs, double x, double y)
704 /* Fill in the pixel by checking each shape (args[nargs]) for effects on
723 * pixel to 0 if >1 clamp r/g/b:
735 /* And fill in the pixel: */
798 /* Each pixel in each row: */
800 pixel(buffer + 4*(x + y*image.width), arg_list, nshapes, x, y);
838 " the top left of the output PNG as pixel coordinates. The 'width'\n"
