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76 lines
2.8 KiB
C++
76 lines
2.8 KiB
C++
/*
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* Copyright (C) 2009 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SKY_ENGINE_PLATFORM_TRANSFORMS_PERSPECTIVETRANSFORMOPERATION_H_
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#define SKY_ENGINE_PLATFORM_TRANSFORMS_PERSPECTIVETRANSFORMOPERATION_H_
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#include "flutter/sky/engine/platform/transforms/TransformOperation.h"
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namespace blink {
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class PLATFORM_EXPORT PerspectiveTransformOperation
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: public TransformOperation {
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public:
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static PassRefPtr<PerspectiveTransformOperation> create(double p) {
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return adoptRef(new PerspectiveTransformOperation(p));
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}
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double perspective() const { return m_p; }
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virtual bool canBlendWith(const TransformOperation& other) const {
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return isSameType(other);
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}
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private:
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virtual bool isIdentity() const override { return !m_p; }
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virtual OperationType type() const override { return Perspective; }
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virtual bool operator==(const TransformOperation& o) const override {
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if (!isSameType(o))
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return false;
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const PerspectiveTransformOperation* p =
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static_cast<const PerspectiveTransformOperation*>(&o);
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return m_p == p->m_p;
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}
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virtual void apply(TransformationMatrix& transform,
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const FloatSize&) const override {
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transform.applyPerspective(m_p);
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}
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virtual PassRefPtr<TransformOperation> blend(
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const TransformOperation* from,
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double progress,
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bool blendToIdentity = false) override;
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PerspectiveTransformOperation(double p) : m_p(p) {}
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double m_p;
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};
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} // namespace blink
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#endif // SKY_ENGINE_PLATFORM_TRANSFORMS_PERSPECTIVETRANSFORMOPERATION_H_
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