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46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
#include "SDraw.h"
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NAMESPACE_UPP
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void SDraw::RenderClip(byte *t, int alpha)
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{
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agg::rendering_buffer mask_rbuf;
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mask_rbuf.attach(t, size.cx, size.cy, size.cx);
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typedef agg::renderer_base<agg::pixfmt_gray8> ren_base;
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agg::pixfmt_gray8 pixf(mask_rbuf);
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ren_base rb(pixf);
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agg::scanline_p8 sl;
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if(inpath)
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path.close_polygon();
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rasterizer.reset();
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rasterizer.filling_rule(pathattr.evenodd ? agg::fill_even_odd : agg::fill_non_zero);
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rasterizer.add_path(curved_trans);
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agg::renderer_scanline_aa_solid<ren_base> r(rb);
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r.color(agg::gray8(alpha, 255));
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agg::render_scanlines(rasterizer, sl, r);
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rasterizer.reset();
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inpath = false;
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}
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SDraw& SDraw::Clip(double opacity)
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{
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int l = size.cx * size.cy;
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Buffer<byte> cl(l);
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memset(~cl, 0, l);
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RenderClip(~cl, int(255 * opacity));
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if(clip.GetCount()) {
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byte *s = ~clip.Top();
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for(int i = 0; i < l; i++)
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cl[i] = ((cl[i] + (cl[i] >> 7)) * s[i]) >> 8;
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}
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if(attr.hasclip)
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clip.Top() = cl;
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else {
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clip.Add() = cl;
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attr.hasclip = true;
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attr.cliplevel = clip.GetCount();
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}
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return *this;
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}
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END_UPP_NAMESPACE
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