cc: Use gfx:: Geometry types for positions, bounds, and related things.

cc/math_util.h

 // Copyright 2012 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 CCMathUtil_h
 #define CCMathUtil_h
 
 #include "base/logging.h"
-#include "FloatPoint.h"
+#include "ui/gfx/point_f.h"
 #include "FloatPoint3D.h"
 
 namespace WebKit {
 class WebTransformationMatrix;
 }
 
+namespace gfx {
+class Rect;
+class RectF;
+}
+
 namespace cc {
 
-class IntRect;
-class FloatRect;
 class FloatQuad;
+class FloatSize;
 
 struct HomogeneousCoordinate {
     HomogeneousCoordinate(double newX, double newY, double newZ, double newW)
         : x(newX)
         , y(newY)
         , z(newZ)
         , w(newW)
     {
     }
 
     bool shouldBeClipped() const
     {
         return w <= 0;
     }
 
-    FloatPoint cartesianPoint2d() const
+    gfx::PointF cartesianPoint2d() const
     {
         if (w == 1)
-            return FloatPoint(x, y);
+            return gfx::PointF(x, y);
 
         // For now, because this code is used privately only by MathUtil, it should never be called when w == 0, and we do not yet need to handle that case.
         DCHECK(w);
         double invW = 1.0 / w;
-        return FloatPoint(x * invW, y * invW);
+        return gfx::PointF(x * invW, y * invW);
     }
 
     FloatPoint3D cartesianPoint3d() const
     {
         if (w == 1)
             return FloatPoint3D(x, y, z);
 
         // For now, because this code is used privately only by MathUtil, it should never be called when w == 0, and we do not yet need to handle that case.
         DCHECK(w);
         double invW = 1.0 / w;
@@ skipping 10 matching lines @@
 public:
 
     // Background: WebTransformationMatrix code in WebCore does not do the right thing in
     // mapRect / mapQuad / projectQuad when there is a perspective projection that causes
     // one of the transformed vertices to go to w < 0. In those cases, it is necessary to
     // perform clipping in homogeneous coordinates, after applying the transform, before
     // dividing-by-w to convert to cartesian coordinates.
     //
     // These functions return the axis-aligned rect that encloses the correctly clipped,
     // transformed polygon.
-    static IntRect mapClippedRect(const WebKit::WebTransformationMatrix&, const IntRect&);
-    static FloatRect mapClippedRect(const WebKit::WebTransformationMatrix&, const FloatRect&);
-    static FloatRect projectClippedRect(const WebKit::WebTransformationMatrix&, const FloatRect&);
+    static gfx::Rect mapClippedRect(const WebKit::WebTransformationMatrix&, const gfx::Rect&);
+    static gfx::RectF mapClippedRect(const WebKit::WebTransformationMatrix&, const gfx::RectF&);
+    static gfx::RectF projectClippedRect(const WebKit::WebTransformationMatrix&, const gfx::RectF&);
 
     // Returns an array of vertices that represent the clipped polygon. After returning, indexes from
     // 0 to numVerticesInClippedQuad are valid in the clippedQuad array. Note that
     // numVerticesInClippedQuad may be zero, which means the entire quad was clipped, and
     // none of the vertices in the array are valid.
-    static void mapClippedQuad(const WebKit::WebTransformationMatrix&, const FloatQuad& srcQuad, FloatPoint clippedQuad[8], int& numVerticesInClippedQuad);
+    static void mapClippedQuad(const WebKit::WebTransformationMatrix&, const FloatQuad& srcQuad, gfx::PointF clippedQuad[8], int& numVerticesInClippedQuad);
 
-    static FloatRect computeEnclosingRectOfVertices(FloatPoint vertices[], int numVertices);
-    static FloatRect computeEnclosingClippedRect(const HomogeneousCoordinate& h1, const HomogeneousCoordinate& h2, const HomogeneousCoordinate& h3, const HomogeneousCoordinate& h4);
+    static gfx::RectF computeEnclosingRectOfVertices(gfx::PointF vertices[], int numVertices);
+    static gfx::RectF computeEnclosingClippedRect(const HomogeneousCoordinate& h1, const HomogeneousCoordinate& h2, const HomogeneousCoordinate& h3, const HomogeneousCoordinate& h4);
 
     // NOTE: These functions do not do correct clipping against w = 0 plane, but they
     // correctly detect the clipped condition via the boolean clipped.
     static FloatQuad mapQuad(const WebKit::WebTransformationMatrix&, const FloatQuad&, bool& clipped);
-    static FloatPoint mapPoint(const WebKit::WebTransformationMatrix&, const FloatPoint&, bool& clipped);
+    static gfx::PointF mapPoint(const WebKit::WebTransformationMatrix&, const gfx::PointF&, bool& clipped);
     static FloatPoint3D mapPoint(const WebKit::WebTransformationMatrix&, const FloatPoint3D&, bool& clipped);
     static FloatQuad projectQuad(const WebKit::WebTransformationMatrix&, const FloatQuad&, bool& clipped);
-    static FloatPoint projectPoint(const WebKit::WebTransformationMatrix&, const FloatPoint&, bool& clipped);
+    static gfx::PointF projectPoint(const WebKit::WebTransformationMatrix&, const gfx::PointF&, bool& clipped);
 
     static void flattenTransformTo2d(WebKit::WebTransformationMatrix&);
 
-    static FloatPoint computeTransform2dScaleComponents(const WebKit::WebTransformationMatrix&);
+    static gfx::Vector2dF computeTransform2dScaleComponents(const WebKit::WebTransformationMatrix&);
 
     // Returns the smallest angle between the given two vectors in degrees. Neither vector is
     // assumed to be normalized.
     static float smallestAngleBetweenVectors(const FloatSize&, const FloatSize&);
 
     // Projects the |source| vector onto |destination|. Neither vector is assumed to be normalized.
     static FloatSize projectVector(const FloatSize& source, const FloatSize& destination);
 };
 
 } // namespace cc
 
 #endif // #define CCMathUtil_h