Revert "Delete CC."

cc/resources/layer_quad.h

+// Copyright 2011 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_RESOURCES_LAYER_QUAD_H_
+#define CC_RESOURCES_LAYER_QUAD_H_
+
+#include "base/basictypes.h"
+#include "ui/gfx/geometry/point_f.h"
+
+namespace gfx {
+class QuadF;
+}
+
+static const float kAntiAliasingInflateDistance = 0.5f;
+
+namespace cc {
+
+class LayerQuad {
+ public:
+  class Edge {
+   public:
+    Edge() : x_(0), y_(0), z_(0), degenerate_(false) {}
+    Edge(const gfx::PointF& p, const gfx::PointF& q);
+
+    float x() const { return x_; }
+    float y() const { return y_; }
+    float z() const { return z_; }
+
+    void set_x(float x) { x_ = x; }
+    void set_y(float y) { y_ = y; }
+    void set_z(float z) { z_ = z; }
+    void set(float x, float y, float z) {
+      x_ = x;
+      y_ = y;
+      z_ = z;
+    }
+
+    void move_x(float dx) { x_ += dx; }
+    void move_y(float dy) { y_ += dy; }
+    void move_z(float dz) { z_ += dz; }
+    void move(float dx, float dy, float dz) {
+      x_ += dx;
+      y_ += dy;
+      z_ += dz;
+    }
+
+    void scale_x(float sx) { x_ *= sx; }
+    void scale_y(float sy) { y_ *= sy; }
+    void scale_z(float sz) { z_ *= sz; }
+    void scale(float sx, float sy, float sz) {
+      x_ *= sx;
+      y_ *= sy;
+      z_ *= sz;
+    }
+    void scale(float s) { scale(s, s, s); }
+
+    bool degenerate() const { return degenerate_; }
+
+    gfx::PointF Intersect(const Edge& e) const;
+
+   private:
+    float x_;
+    float y_;
+    float z_;
+    bool degenerate_;
+  };
+
+  LayerQuad(const Edge& left,
+            const Edge& top,
+            const Edge& right,
+            const Edge& bottom);
+  explicit LayerQuad(const gfx::QuadF& quad);
+
+  Edge left() const { return left_; }
+  Edge top() const { return top_; }
+  Edge right() const { return right_; }
+  Edge bottom() const { return bottom_; }
+
+  void InflateX(float dx) {
+    left_.move_z(dx);
+    right_.move_z(dx);
+  }
+  void InflateY(float dy) {
+    top_.move_z(dy);
+    bottom_.move_z(dy);
+  }
+  void Inflate(float d) {
+    InflateX(d);
+    InflateY(d);
+  }
+  void InflateAntiAliasingDistance() {
+    Inflate(kAntiAliasingInflateDistance);
+  }
+
+  gfx::QuadF ToQuadF() const;
+
+  void ToFloatArray(float flattened[12]) const;
+
+ private:
+  Edge left_;
+  Edge top_;
+  Edge right_;
+  Edge bottom_;
+
+  DISALLOW_COPY_AND_ASSIGN(LayerQuad);
+};
+
+}  // namespace cc
+
+#endif  // CC_RESOURCES_LAYER_QUAD_H_