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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CC_ANIMATION_TRANSFORM_OPERATION_H_
#define CC_ANIMATION_TRANSFORM_OPERATION_H_
#include "ui/gfx/transform.h"
namespace gfx {
class BoxF;
}
namespace cc {
struct TransformOperation {
enum Type {
TransformOperationTranslate,
TransformOperationRotate,
TransformOperationScale,
TransformOperationSkew,
TransformOperationPerspective,
TransformOperationMatrix,
TransformOperationIdentity
};
TransformOperation()
: type(TransformOperationIdentity) {
}
Type type;
gfx::Transform matrix;
union {
SkMScalar perspective_depth;
struct {
SkMScalar x, y;
} skew;
struct {
SkMScalar x, y, z;
} scale;
struct {
SkMScalar x, y, z;
} translate;
struct {
struct {
SkMScalar x, y, z;
} axis;
SkMScalar angle;
} rotate;
};
bool IsIdentity() const;
static bool BlendTransformOperations(const TransformOperation* from,
const TransformOperation* to,
SkMScalar progress,
gfx::Transform* result);
static bool BlendedBoundsForBox(const gfx::BoxF& box,
const TransformOperation* from,
const TransformOperation* to,
SkMScalar min_progress,
SkMScalar max_progress,
gfx::BoxF* bounds);
};
} // namespace cc
#endif // CC_ANIMATION_TRANSFORM_OPERATION_H_
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