/* Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org> This file is part of the KDE project This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License aint with this library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include "config.h" #if ENABLE(SVG) && ENABLE(SVG_FILTERS) #include "SVGFEHelpersCg.h" #include "Color.h" #include "SVGDistantLightSource.h" #include "SVGLightSource.h" #include "SVGPointLightSource.h" #include "SVGSpotLightSource.h" #import "WKDistantLightFilter.h" #import "WKNormalMapFilter.h" #import "WKPointLightFilter.h" #import "WKSpotLightFilter.h" #include <wtf/MathExtras.h> namespace WebCore { CIVector* getVectorForChannel(ChannelSelectorType channel) { switch (channel) { case CHANNEL_UNKNOWN: return nil; case CHANNEL_R: return [CIVector vectorWithX:1.0f Y:0.0f Z:0.0f W:0.0f]; case CHANNEL_G: return [CIVector vectorWithX:0.0f Y:1.0f Z:0.0f W:0.0f]; case CHANNEL_B: return [CIVector vectorWithX:0.0f Y:0.0f Z:1.0f W:0.0f]; case CHANNEL_A: return [CIVector vectorWithX:0.0f Y:0.0f Z:0.0f W:1.0f]; default: return [CIVector vectorWithX:0.0f Y:0.0f Z:0.0f W:0.0f]; } } CIColor* ciColor(const Color& c) { CGColorRef colorCG = cgColor(c); CIColor* colorCI = [CIColor colorWithCGColor:colorCG]; CGColorRelease(colorCG); return colorCI; } // Lighting CIFilter* getPointLightVectors(CIFilter* normals, CIVector* lightPosition, float surfaceScale) { CIFilter* filter; BEGIN_BLOCK_OBJC_EXCEPTIONS; filter = [CIFilter filterWithName:@"WKPointLight"]; if (!filter) return nil; [filter setDefaults]; [filter setValue:[normals valueForKey:@"outputImage"] forKey:@"inputNormalMap"]; [filter setValue:lightPosition forKey:@"inputLightPosition"]; [filter setValue:[NSNumber numberWithFloat:surfaceScale] forKey:@"inputSurfaceScale"]; return filter; END_BLOCK_OBJC_EXCEPTIONS; return nil; } CIFilter* getLightVectors(CIFilter* normals, const LightSource* light, float surfaceScale) { [WKDistantLightFilter class]; [WKPointLightFilter class]; [WKSpotLightFilter class]; CIFilter* filter = nil; BEGIN_BLOCK_OBJC_EXCEPTIONS; switch (light->type()) { case LS_DISTANT: { const DistantLightSource* dlight = static_cast<const DistantLightSource*>(light); filter = [CIFilter filterWithName:@"WKDistantLight"]; if (!filter) return nil; [filter setDefaults]; float azimuth = dlight->azimuth(); float elevation = dlight->elevation(); azimuth = deg2rad(azimuth); elevation = deg2rad(elevation); float Lx = cosf(azimuth)*cosf(elevation); float Ly = sinf(azimuth)*cosf(elevation); float Lz = sinf(elevation); [filter setValue:[normals valueForKey:@"outputImage"] forKey:@"inputNormalMap"]; [filter setValue:[CIVector vectorWithX:Lx Y:Ly Z:Lz] forKey:@"inputLightDirection"]; return filter; } case LS_POINT: { const PointLightSource* plight = static_cast<const PointLightSource*>(light); return getPointLightVectors(normals, [CIVector vectorWithX:plight->position().x() Y:plight->position().y() Z:plight->position().z()], surfaceScale); } case LS_SPOT: { const SpotLightSource* slight = static_cast<const SpotLightSource*>(light); filter = [CIFilter filterWithName:@"WKSpotLight"]; if (!filter) return nil; CIFilter* pointLightFilter = getPointLightVectors(normals, [CIVector vectorWithX:slight->position().x() Y:slight->position().y() Z:slight->position().z()], surfaceScale); if (!pointLightFilter) return nil; [filter setDefaults]; [filter setValue:[pointLightFilter valueForKey:@"outputImage"] forKey:@"inputLightVectors"]; [filter setValue:[CIVector vectorWithX:slight->direction().x() Y:slight->direction().y() Z:slight->direction().z()] forKey:@"inputLightDirection"]; [filter setValue:[NSNumber numberWithFloat:slight->specularExponent()] forKey:@"inputSpecularExponent"]; [filter setValue:[NSNumber numberWithFloat:deg2rad(slight->limitingConeAngle())] forKey:@"inputLimitingConeAngle"]; return filter; } } END_BLOCK_OBJC_EXCEPTIONS; return nil; } CIFilter* getNormalMap(CIImage* bumpMap, float scale) { [WKNormalMapFilter class]; CIFilter* filter; BEGIN_BLOCK_OBJC_EXCEPTIONS; filter = [CIFilter filterWithName:@"WKNormalMap"]; [filter setDefaults]; [filter setValue:bumpMap forKey:@"inputImage"]; [filter setValue:[NSNumber numberWithFloat:scale] forKey:@"inputSurfaceScale"]; return filter; END_BLOCK_OBJC_EXCEPTIONS; return nil; } } #endif // ENABLE(SVG) && ENABLE(SVG_FILTERS)