mirror of https://github.com/vitalif/openscad
use background color when writing PNG with lodepng
parent
ea92d9ce19
commit
4a2255f199
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@ -5,11 +5,20 @@
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#include <vector>
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#include <iterator>
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#include <algorithm>
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#include "rendersettings.h"
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bool write_png(std::ostream &output, unsigned char *pixels, int width, int height)
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{
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std::vector<unsigned char> dataout;
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unsigned err = lodepng::encode(dataout, pixels, width, height, LCT_RGBA, 8);
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lodepng::State state;
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state.info_png.background_defined = true;
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Color4f bg = RenderSettings::inst()->color(RenderSettings::BACKGROUND_COLOR);
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state.info_png.background_r = bg(0);
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state.info_png.background_g = bg(1);
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state.info_png.background_b = bg(2);
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state.info_png.color.colortype = LCT_RGBA;
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state.info_png.color.bitdepth = 8;
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unsigned err = lodepng::encode(dataout, pixels, width, height, state);
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if ( err ) return false;
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output.write( reinterpret_cast<const char *>(&dataout[0]), dataout.size());
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if ( output.bad() ) std::cerr << "Error writing to ostream\n";
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