[cc] Rename all cc/ filenames to Chromium style

cc/layer_quad.h

-// Copyright 2012 The Chromium Authors. All rights reserved.
+// 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 CCLayerQuad_h
+#define CCLayerQuad_h
+
+#if USE(ACCELERATED_COMPOSITING)
+
+#include "FloatPoint3D.h"
+#include "FloatQuad.h"
+
+static const float kAntiAliasingInflateDistance = 0.5f;
+
+namespace cc {
+
+class CCLayerQuad {
+public:
+    class Edge {
+    public:
+        Edge()
+            : m_x(0)
+            , m_y(0)
+            , m_z(0)
+        {
+        }
+        Edge(const FloatPoint&, const FloatPoint&);
+
+        float x() const { return m_x; }
+        float y() const { return m_y; }
+        float z() const { return m_z; }
+
+        void setX(float x) { m_x = x; }
+        void setY(float y) { m_y = y; }
+        void setZ(float z) { m_z = z; }
+        void set(float x, float y, float z)
+        {
+            m_x = x;
+            m_y = y;
+            m_z = z;
+        }
+
+        void moveX(float dx) { m_x += dx; }
+        void moveY(float dy) { m_y += dy; }
+        void moveZ(float dz) { m_z += dz; }
+        void move(float dx, float dy, float dz)
+        {
+            m_x += dx;
+            m_y += dy;
+            m_z += dz;
+        }
+
+        void scaleX(float sx) { m_x *= sx; }
+        void scaleY(float sy) { m_y *= sy; }
+        void scaleZ(float sz) { m_z *= sz; }
+        void scale(float sx, float sy, float sz)
+        {
+            m_x *= sx;
+            m_y *= sy;
+            m_z *= sz;
+        }
+        void scale(float s) { scale(s, s, s); }
+
+        FloatPoint intersect(const Edge& e) const
+        {
+            return FloatPoint(
+                (y() * e.z() - e.y() * z()) / (x() * e.y() - e.x() * y()),
+                (x() * e.z() - e.x() * z()) / (e.x() * y() - x() * e.y()));
+        }
+
+    private:
+        float m_x;
+        float m_y;
+        float m_z;
+    };
+
+    CCLayerQuad(const Edge& left, const Edge& top, const Edge& right, const Edge& bottom);
+    CCLayerQuad(const FloatQuad&);
+
+    Edge left() const { return m_left; }
+    Edge top() const { return m_top; }
+    Edge right() const { return m_right; }
+    Edge bottom() const { return m_bottom; }
+
+    void inflateX(float dx) { m_left.moveZ(dx); m_right.moveZ(dx); }
+    void inflateY(float dy) { m_top.moveZ(dy); m_bottom.moveZ(dy); }
+    void inflate(float d) { inflateX(d); inflateY(d); }
+    void inflateAntiAliasingDistance() { inflate(kAntiAliasingInflateDistance); }
+
+    FloatQuad floatQuad() const;
+
+    void toFloatArray(float[12]) const;
+
+private:
+    Edge m_left;
+    Edge m_top;
+    Edge m_right;
+    Edge m_bottom;
+};
+
+}
+
+#endif // USE(ACCELERATED_COMPOSITING)
+
+#endif