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59 lines
1.8 KiB
59 lines
1.8 KiB
11 years ago
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/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2013 - Raw Material Software Ltd.
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Permission is granted to use this software under the terms of either:
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a) the GPL v2 (or any later version)
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b) the Affero GPL v3
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Details of these licenses can be found at: www.gnu.org/licenses
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.juce.com for more information.
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==============================================================================
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*/
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GlowEffect::GlowEffect()
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: radius (2.0f),
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colour (Colours::white)
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{
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}
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GlowEffect::~GlowEffect()
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{
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}
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void GlowEffect::setGlowProperties (const float newRadius,
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Colour newColour)
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{
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radius = newRadius;
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colour = newColour;
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}
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void GlowEffect::applyEffect (Image& image, Graphics& g, float scaleFactor, float alpha)
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{
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Image temp (image.getFormat(), image.getWidth(), image.getHeight(), true);
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ImageConvolutionKernel blurKernel (roundToInt (radius * scaleFactor * 2.0f));
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blurKernel.createGaussianBlur (radius);
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blurKernel.rescaleAllValues (radius);
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blurKernel.applyToImage (temp, image, image.getBounds());
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g.setColour (colour.withMultipliedAlpha (alpha));
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g.drawImageAt (temp, 0, 0, true);
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g.setOpacity (alpha);
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g.drawImageAt (image, 0, 0, false);
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}
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