1 // Copyright 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
6 #ifndef CC_RESOURCES_LAYER_QUAD_H_
7 #define CC_RESOURCES_LAYER_QUAD_H_
9 #include "base/basictypes.h"
10 #include "cc/base/cc_export.h"
11 #include "ui/gfx/geometry/point_f.h"
17 static const float kAntiAliasingInflateDistance = 0.5f;
21 class CC_EXPORT LayerQuad {
25 Edge() : x_(0), y_(0), z_(0) {}
26 Edge(const gfx::PointF& p, const gfx::PointF& q);
28 float x() const { return x_; }
29 float y() const { return y_; }
30 float z() const { return z_; }
32 void set_x(float x) { x_ = x; }
33 void set_y(float y) { y_ = y; }
34 void set_z(float z) { z_ = z; }
35 void set(float x, float y, float z) {
41 void move_x(float dx) { x_ += dx; }
42 void move_y(float dy) { y_ += dy; }
43 void move_z(float dz) { z_ += dz; }
44 void move(float dx, float dy, float dz) {
50 void scale_x(float sx) { x_ *= sx; }
51 void scale_y(float sy) { y_ *= sy; }
52 void scale_z(float sz) { z_ *= sz; }
53 void scale(float sx, float sy, float sz) {
58 void scale(float s) { scale(s, s, s); }
60 gfx::PointF Intersect(const Edge& e) const {
62 (y() * e.z() - e.y() * z()) / (x() * e.y() - e.x() * y()),
63 (x() * e.z() - e.x() * z()) / (e.x() * y() - x() * e.y()));
72 LayerQuad(const Edge& left,
76 explicit LayerQuad(const gfx::QuadF& quad);
78 Edge left() const { return left_; }
79 Edge top() const { return top_; }
80 Edge right() const { return right_; }
81 Edge bottom() const { return bottom_; }
83 void InflateX(float dx) {
87 void InflateY(float dy) {
91 void Inflate(float d) {
95 void InflateAntiAliasingDistance() {
96 Inflate(kAntiAliasingInflateDistance);
99 gfx::QuadF ToQuadF() const;
101 void ToFloatArray(float flattened[12]) const;
109 DISALLOW_COPY_AND_ASSIGN(LayerQuad);
114 #endif // CC_RESOURCES_LAYER_QUAD_H_