8cfe718e0c
https://www.w3.org/TR/SVG11/filters.html#feDiffuseLightingElement - Add SkSVGFeDiffuseLighting node - Move distant light source direction computation into a method on SkSVGFeDistantLight - Implement distant and point light sources for feDiffuseLighting Bug: skia:10841 Change-Id: I74b8b9e04be5d2c5ac9f912d015dce96367040a1 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/402645 Reviewed-by: Florin Malita <fmalita@chromium.org> Commit-Queue: Tyler Denniston <tdenniston@google.com>
109 lines
3.6 KiB
C++
109 lines
3.6 KiB
C++
/*
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* Copyright 2020 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkSVGFeLighting_DEFINED
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#define SkSVGFeLighting_DEFINED
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#include "modules/svg/include/SkSVGFe.h"
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#include "modules/svg/include/SkSVGTypes.h"
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class SkSVGFeDistantLight;
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class SkSVGFePointLight;
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class SkSVGFeLighting : public SkSVGFe {
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public:
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struct KernelUnitLength {
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SkSVGNumberType fDx;
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SkSVGNumberType fDy;
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};
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SVG_ATTR(SurfaceScale, SkSVGNumberType, 1)
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SVG_OPTIONAL_ATTR(KernelUnitLength, KernelUnitLength)
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protected:
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explicit SkSVGFeLighting(SkSVGTag t) : INHERITED(t) {}
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std::vector<SkSVGFeInputType> getInputs() const final { return {this->getIn()}; }
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bool parseAndSetAttribute(const char*, const char*) override;
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sk_sp<SkImageFilter> onMakeImageFilter(const SkSVGRenderContext&,
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const SkSVGFilterContext&) const final;
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virtual sk_sp<SkImageFilter> makeDistantLight(const SkSVGRenderContext&,
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const SkSVGFilterContext&,
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const SkSVGFeDistantLight*) const = 0;
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virtual sk_sp<SkImageFilter> makePointLight(const SkSVGRenderContext&,
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const SkSVGFilterContext&,
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const SkSVGFePointLight*) const = 0;
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SkColor resolveLightingColor(const SkSVGRenderContext&) const;
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SkPoint3 resolveXYZ(const SkSVGRenderContext&,
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const SkSVGFilterContext&,
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SkSVGNumberType,
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SkSVGNumberType,
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SkSVGNumberType) const;
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private:
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using INHERITED = SkSVGFe;
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};
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class SkSVGFeSpecularLighting final : public SkSVGFeLighting {
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public:
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static sk_sp<SkSVGFeSpecularLighting> Make() {
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return sk_sp<SkSVGFeSpecularLighting>(new SkSVGFeSpecularLighting());
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}
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SVG_ATTR(SpecularConstant, SkSVGNumberType, 1)
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SVG_ATTR(SpecularExponent, SkSVGNumberType, 1)
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protected:
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bool parseAndSetAttribute(const char*, const char*) override;
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sk_sp<SkImageFilter> makeDistantLight(const SkSVGRenderContext&,
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const SkSVGFilterContext&,
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const SkSVGFeDistantLight*) const final;
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sk_sp<SkImageFilter> makePointLight(const SkSVGRenderContext&,
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const SkSVGFilterContext&,
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const SkSVGFePointLight*) const final;
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private:
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SkSVGFeSpecularLighting() : INHERITED(SkSVGTag::kFeSpecularLighting) {}
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using INHERITED = SkSVGFeLighting;
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};
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class SkSVGFeDiffuseLighting final : public SkSVGFeLighting {
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public:
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static sk_sp<SkSVGFeDiffuseLighting> Make() {
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return sk_sp<SkSVGFeDiffuseLighting>(new SkSVGFeDiffuseLighting());
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}
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SVG_ATTR(DiffuseConstant, SkSVGNumberType, 1)
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protected:
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bool parseAndSetAttribute(const char*, const char*) override;
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sk_sp<SkImageFilter> makeDistantLight(const SkSVGRenderContext&,
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const SkSVGFilterContext&,
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const SkSVGFeDistantLight*) const final;
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sk_sp<SkImageFilter> makePointLight(const SkSVGRenderContext&,
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const SkSVGFilterContext&,
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const SkSVGFePointLight*) const final;
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private:
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SkSVGFeDiffuseLighting() : INHERITED(SkSVGTag::kFeDiffuseLighting) {}
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using INHERITED = SkSVGFeLighting;
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};
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#endif // SkSVGFeLighting_DEFINED
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