9529e1e696
2000-05-29 Sven Neumann <sven@gimp.org>
* app/Makefile.am
* app/paint_core.c
* app/paint_core_kernels.h: moved brush subsampling kernels
into its own header file and generated a slightly different
kernel (using the new kernelgen tool, see below). The new
kernel simulates a circular brush instead of a rectangular
one and gives slightly different (lighter) results.
* app/gimage_mask.c: when stroking a selection, offset the
points by 0.5 to align the brushes with the pixel grid. This
lets you create 1-pixel wide rectangles and ellipses.
* tools/Makefile.am
* tools/kernelgen.c: simple hack to generate subsampling
kernels.
49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
/* paint_core_kernels.h
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*
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* This file was generated using kernelgen as found in the tools dir.
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* (threshold = 0.25)
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*/
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#define KERNEL_WIDTH 3
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#define KERNEL_HEIGHT 3
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#define SUBSAMPLE 4
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/* Brush pixel subsampling kernels */
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static const int subsample[5][5][9] = {
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{
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{ 64, 64, 0, 64, 64, 0, 0, 0, 0, },
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{ 25, 102, 0, 25, 102, 0, 0, 0, 0, },
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{ 0, 128, 0, 0, 128, 0, 0, 0, 0, },
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{ 0, 102, 25, 0, 102, 25, 0, 0, 0, },
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{ 0, 64, 64, 0, 64, 64, 0, 0, 0, }
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},
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{
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{ 25, 25, 0, 102, 102, 0, 0, 0, 0, },
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{ 6, 43, 0, 43, 162, 0, 0, 0, 0, },
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{ 0, 50, 0, 0, 205, 0, 0, 0, 0, },
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{ 0, 43, 6, 0, 162, 43, 0, 0, 0, },
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{ 0, 25, 25, 0, 102, 102, 0, 0, 0, }
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},
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{
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{ 0, 0, 0, 128, 128, 0, 0, 0, 0, },
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{ 0, 0, 0, 50, 205, 0, 0, 0, 0, },
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{ 0, 0, 0, 0, 256, 0, 0, 0, 0, },
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{ 0, 0, 0, 0, 205, 50, 0, 0, 0, },
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{ 0, 0, 0, 0, 128, 128, 0, 0, 0, }
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},
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{
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{ 0, 0, 0, 102, 102, 0, 25, 25, 0, },
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{ 0, 0, 0, 43, 162, 0, 6, 43, 0, },
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{ 0, 0, 0, 0, 205, 0, 0, 50, 0, },
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{ 0, 0, 0, 0, 162, 43, 0, 43, 6, },
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{ 0, 0, 0, 0, 102, 102, 0, 25, 25, }
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},
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{
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{ 0, 0, 0, 64, 64, 0, 64, 64, 0, },
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{ 0, 0, 0, 25, 102, 0, 25, 102, 0, },
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{ 0, 0, 0, 0, 128, 0, 0, 128, 0, },
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{ 0, 0, 0, 0, 102, 25, 0, 102, 25, },
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{ 0, 0, 0, 0, 64, 64, 0, 64, 64, }
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}
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};
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