Add initial CurveMeasure code

bench/MeasureBench.cpp

Index: bench/MeasureBench.cpp
diff --git a/bench/MeasureBench.cpp b/bench/MeasureBench.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..7ecfa752c4bf7adefda6a9422c579e4003ca80ce
--- /dev/null
+++ b/bench/MeasureBench.cpp
@@ -0,0 +1,160 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#include <cmath>
+
+#include "Benchmark.h"
+#include "SkCurveMeasure.h"
+#include "SkPath.h"
+#include "SkPathMeasure.h"
+#include "SkString.h"
+
+class MeasureBench : public Benchmark {
+protected:
+    SkString            fName;
+
+    SkPath              fPath;
+
+	bool				fUsePathMeasure;
+    float               fSize;
+	size_t			    fPieces;
+
+    SkPoint             fPts[3];
+
+public:
+    MeasureBench(bool usePathMeasure, float size, size_t pieces) : fUsePathMeasure(usePathMeasure), fSize(size), fPieces(pieces) {
+        fName.printf("measure_%s_%.1f_%ld", fUsePathMeasure ? "pathMeasure" : "curveMeasure", fSize, fPieces);
+
+        auto p1 = SkPoint::Make(0, 0);
+        auto p2 = SkPoint::Make(30*fSize, 0);
+        auto p3 = SkPoint::Make(15*fSize, 15*fSize);
+
+        fPts[0] = p1;
+        fPts[1] = p2;
+        fPts[2] = p3;
+
+        this->setPath();
+    }
+
+protected:
+    const char* onGetName() override {
+        return fName.c_str();
+    }
+
+    void setPath() {
+        fPath.moveTo(fPts[0]);
+        fPath.quadTo(fPts[1], fPts[2]);
+    }
+
+	//// measurement code
+
+	void do_pathMeasure(SkCanvas* canvas) {
+		SkPathMeasure meas(fPath, false);
+
+        SkScalar totalLength = meas.getLength();
+        SkScalar pieceLength = totalLength/fPieces;
+
+        SkPoint point;
+		for (size_t i = 0; i <= fPieces; i++) {
+			if(meas.getPosTan(i*pieceLength, &point, nullptr)) {};
+		}
+	}
+
+	void do_curveMeasure(SkCanvas* canvas) {
+        SkCurveMeasure meas(fPts, kQuad_SegType);
+
+        SkScalar totalLength = meas.getLength();
+        SkScalar pieceLength = totalLength/fPieces;
+
+        SkPoint point;
+        for (size_t i = 0; i <= fPieces; i++) {
+            meas.getPosTan(i*pieceLength, &point, nullptr);
+        }
+	}
+
+    void onDraw(int loops, SkCanvas* canvas) override {
+        for (int i = 0; i < loops; i++) {
+            for (int j = 0; j < 1000; j++) {
+                if (fUsePathMeasure) {
+                    do_pathMeasure(canvas);
+                }
+                else {
+                    do_curveMeasure(canvas);
+                }
+            }
+        }
+    }
+
+private:
+    typedef Benchmark INHERITED;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+DEF_BENCH( return new MeasureBench(true, 1, 2); )
+DEF_BENCH( return new MeasureBench(true, 2, 2); )
+DEF_BENCH( return new MeasureBench(true, 10, 2); )
+DEF_BENCH( return new MeasureBench(true, 100, 2); )
+DEF_BENCH( return new MeasureBench(true, 1000, 2); )
+
+DEF_BENCH( return new MeasureBench(true, 1, 1); )
+DEF_BENCH( return new MeasureBench(true, 1, 2); )
+DEF_BENCH( return new MeasureBench(true, 1, 3); )
+DEF_BENCH( return new MeasureBench(true, 1, 4); )
+DEF_BENCH( return new MeasureBench(true, 1, 5); )
+DEF_BENCH( return new MeasureBench(true, 2, 1); )
+DEF_BENCH( return new MeasureBench(true, 2, 2); )
+DEF_BENCH( return new MeasureBench(true, 2, 3); )
+DEF_BENCH( return new MeasureBench(true, 2, 4); )
+DEF_BENCH( return new MeasureBench(true, 2, 5); )
+DEF_BENCH( return new MeasureBench(true, 10, 10); )
+DEF_BENCH( return new MeasureBench(true, 10, 20); )
+DEF_BENCH( return new MeasureBench(true, 10, 30); )
+DEF_BENCH( return new MeasureBench(true, 10, 40); )
+DEF_BENCH( return new MeasureBench(true, 10, 50); )
+DEF_BENCH( return new MeasureBench(true, 100, 100); )
+DEF_BENCH( return new MeasureBench(true, 100, 200); )
+DEF_BENCH( return new MeasureBench(true, 100, 300); )
+DEF_BENCH( return new MeasureBench(true, 100, 400); )
+DEF_BENCH( return new MeasureBench(true, 100, 500); )
+DEF_BENCH( return new MeasureBench(true, 1000, 1000); )
+DEF_BENCH( return new MeasureBench(true, 1000, 2000); )
+DEF_BENCH( return new MeasureBench(true, 1000, 3000); )
+DEF_BENCH( return new MeasureBench(true, 1000, 4000); )
+DEF_BENCH( return new MeasureBench(true, 1000, 5000); )
+
+
+DEF_BENCH( return new MeasureBench(false, 1, 2); )
+DEF_BENCH( return new MeasureBench(false, 2, 2); )
+DEF_BENCH( return new MeasureBench(false, 10, 2); )
+DEF_BENCH( return new MeasureBench(false, 100, 2); )
+DEF_BENCH( return new MeasureBench(false, 1000, 2); )
+
+DEF_BENCH( return new MeasureBench(false, 1, 1); )
+DEF_BENCH( return new MeasureBench(false, 1, 2); )
+DEF_BENCH( return new MeasureBench(false, 1, 3); )
+DEF_BENCH( return new MeasureBench(false, 1, 4); )
+DEF_BENCH( return new MeasureBench(false, 1, 5); )
+DEF_BENCH( return new MeasureBench(false, 2, 1); )
+DEF_BENCH( return new MeasureBench(false, 2, 2); )
+DEF_BENCH( return new MeasureBench(false, 2, 3); )
+DEF_BENCH( return new MeasureBench(false, 2, 4); )
+DEF_BENCH( return new MeasureBench(false, 2, 5); )
+DEF_BENCH( return new MeasureBench(false, 10, 10); )
+DEF_BENCH( return new MeasureBench(false, 10, 20); )
+DEF_BENCH( return new MeasureBench(false, 10, 30); )
+DEF_BENCH( return new MeasureBench(false, 10, 40); )
+DEF_BENCH( return new MeasureBench(false, 10, 50); )
+DEF_BENCH( return new MeasureBench(false, 100, 100); )
+DEF_BENCH( return new MeasureBench(false, 100, 200); )
+DEF_BENCH( return new MeasureBench(false, 100, 300); )
+DEF_BENCH( return new MeasureBench(false, 100, 400); )
+DEF_BENCH( return new MeasureBench(false, 100, 500); )
+DEF_BENCH( return new MeasureBench(false, 1000, 1000); )
+DEF_BENCH( return new MeasureBench(false, 1000, 2000); )
+DEF_BENCH( return new MeasureBench(false, 1000, 3000); )
+DEF_BENCH( return new MeasureBench(false, 1000, 4000); )
+DEF_BENCH( return new MeasureBench(false, 1000, 5000); )