thick stroke Beziers

bench/BezierBench.cpp

+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "Benchmark.h"
+#include "SkCanvas.h"
+#include "SkPaint.h"
+#include "SkString.h"
+
+struct BezierRec {
+    SkCanvas*   fCanvas;
+    SkPaint     fPaint;
+    SkPath      fQuad;
+    SkPath      fCubic;
+};
+
+typedef const char* (*DrawProc)(const BezierRec*, int);
+
+static const char* draw_quad(const BezierRec* rec, int count) {
+    if (rec) {
+        SkCanvas* canvas = rec->fCanvas;
+        const SkPaint& paint = rec->fPaint;
+        const SkPath& path = rec->fQuad;
+        for (int i = 0; i < count; ++i) {
+            canvas->drawPath(path, paint);
+        }
+    }
+    return "quad";
+}
+
+static const char* draw_cubic(const BezierRec* rec, int count) {
+    if (rec) {
+        SkCanvas* canvas = rec->fCanvas;
+        const SkPaint& paint = rec->fPaint;
+        const SkPath& path = rec->fCubic;
+        for (int i = 0; i < count; ++i) {
+            canvas->drawPath(path, paint);
+        }
+    }
+    return "cubic";
+}
+
+class BezierBench : public Benchmark {
+    SkString fName;
+    SkPaint::Cap fCap;
+    SkPaint::Join fJoin;
+    BezierRec fRec;
+    DrawProc fProc;
+    SkScalar fWidth;
+public:
+    BezierBench(SkPaint::Cap c, SkPaint::Join j, SkScalar w, DrawProc proc) {
+        static const char* gCapName[] = {
+            "butt", "round", "square"
+        };
+        static const char* gJoinName[] = {
+            "miter", "round", "bevel"
+        };
+
+        fCap = c;
+        fJoin = j;
+        fProc = proc;
+        fWidth = SkIntToScalar(w);
+        fName.printf("draw_stroke_bezier_%s_%s_%s_%g", proc(NULL, 0), gCapName[c], gJoinName[j], w);
+
+        fRec.fQuad.moveTo(20, 20);
+        fRec.fQuad.quadTo(60, 20, 60, 60);
+        fRec.fQuad.quadTo(20, 60, 20, 100);
+        fRec.fCubic.moveTo(20, 20);
+        fRec.fCubic.cubicTo(40, 20, 60, 40, 60, 60);
+        fRec.fCubic.cubicTo(40, 60, 20, 80, 20, 100);
+    }
+
+protected:
+    virtual const char* onGetName() {
+        return fName.c_str();
+    }
+
+    virtual void onDraw(const int loops, SkCanvas* canvas) {
+        fRec.fCanvas = canvas;
+        this->setupPaint(&fRec.fPaint);
+        fRec.fPaint.setStyle(SkPaint::kStroke_Style);
+        fRec.fPaint.setStrokeCap(fCap);
+        fRec.fPaint.setStrokeJoin(fJoin);
+        fRec.fPaint.setStrokeWidth(fWidth);
+        fProc(&fRec, loops);
+    }
+
+private:
+    typedef Benchmark INHERITED;
+};
+
+DEF_BENCH( return new BezierBench(SkPaint::kButt_Cap, SkPaint::kRound_Join, 2, draw_quad); )
+DEF_BENCH( return new BezierBench(SkPaint::kSquare_Cap, SkPaint::kBevel_Join, 10, draw_quad); )
+DEF_BENCH( return new BezierBench(SkPaint::kRound_Cap, SkPaint::kMiter_Join, 50, draw_quad); )
+
+DEF_BENCH( return new BezierBench(SkPaint::kButt_Cap, SkPaint::kRound_Join, 2, draw_cubic); )
+DEF_BENCH( return new BezierBench(SkPaint::kSquare_Cap, SkPaint::kBevel_Join, 10, draw_cubic); )
+DEF_BENCH( return new BezierBench(SkPaint::kRound_Cap, SkPaint::kMiter_Join, 50, draw_cubic); )