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Unified Diff: gm/degeneratesegments.cpp

Issue 23576015: Change old PRG to be SkLCGRandom; change new one to SkRandom (Closed) Base URL: https://skia.googlecode.com/svn/trunk
Patch Set: Fix some spurious SkMWCRandoms Created 7 years, 3 months ago
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Index: gm/degeneratesegments.cpp
diff --git a/gm/degeneratesegments.cpp b/gm/degeneratesegments.cpp
index 2e19d05f7db4c1d109b17492bd309a2f4bc70e3a..219505192c097a7c5a4eac1804c96229ce4c3968 100644
--- a/gm/degeneratesegments.cpp
+++ b/gm/degeneratesegments.cpp
@@ -1,400 +1,400 @@
-/*
- * Copyright 2011 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-#include "gm.h"
-#include "SkCanvas.h"
-#include "SkPaint.h"
-#include "SkRandom.h"
-
-namespace skiagm {
-
-class DegenerateSegmentsGM : public GM {
-public:
- DegenerateSegmentsGM() {}
-
-protected:
- struct PathAndName {
- SkPath fPath;
- const char* fName1;
- const char* fName2;
- };
-
- SkString onShortName() {
- return SkString("degeneratesegments");
- }
-
- SkISize onISize() { return make_isize(896, 930); }
-
- typedef SkPoint (*AddSegmentFunc)(SkPath&, SkPoint&);
-
- // We need to use explicit commands here, instead of addPath, because we
- // do not want the moveTo that is added at the beginning of a path to
- // appear in the appended path.
- static SkPoint AddMove(SkPath& path, SkPoint& startPt) {
- SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
- path.moveTo(moveToPt);
- return moveToPt;
- }
-
- static SkPoint AddMoveClose(SkPath& path, SkPoint& startPt) {
- SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
- path.moveTo(moveToPt);
- path.close();
- return moveToPt;
- }
-
- static SkPoint AddDegenLine(SkPath& path, SkPoint& startPt) {
- path.lineTo(startPt);
- return startPt;
- }
-
- static SkPoint AddMoveDegenLine(SkPath& path, SkPoint& startPt) {
- SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
- path.moveTo(moveToPt);
- path.lineTo(moveToPt);
- return moveToPt;
- }
-
- static SkPoint AddMoveDegenLineClose(SkPath& path, SkPoint& startPt) {
- SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
- path.moveTo(moveToPt);
- path.lineTo(moveToPt);
- path.close();
- return moveToPt;
- }
-
- static SkPoint AddDegenQuad(SkPath& path, SkPoint& startPt) {
- path.quadTo(startPt, startPt);
- return startPt;
- }
-
- static SkPoint AddMoveDegenQuad(SkPath& path, SkPoint& startPt) {
- SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
- path.moveTo(moveToPt);
- path.quadTo(moveToPt, moveToPt);
- return moveToPt;
- }
-
- static SkPoint AddMoveDegenQuadClose(SkPath& path, SkPoint& startPt) {
- SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
- path.moveTo(moveToPt);
- path.quadTo(moveToPt, moveToPt);
- path.close();
- return moveToPt;
- }
-
- static SkPoint AddDegenCubic(SkPath& path, SkPoint& startPt) {
- path.cubicTo(startPt, startPt, startPt);
- return startPt;
- }
-
- static SkPoint AddMoveDegenCubic(SkPath& path, SkPoint& startPt) {
- SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
- path.moveTo(moveToPt);
- path.cubicTo(moveToPt, moveToPt, moveToPt);
- return moveToPt;
- }
-
- static SkPoint AddMoveDegenCubicClose(SkPath& path, SkPoint& startPt) {
- SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
- path.moveTo(moveToPt);
- path.cubicTo(moveToPt, moveToPt, moveToPt);
- path.close();
- return moveToPt;
- }
-
- static SkPoint AddClose(SkPath& path, SkPoint& startPt) {
- path.close();
- return startPt;
- }
-
- static SkPoint AddLine(SkPath& path, SkPoint& startPt) {
- SkPoint endPt = startPt + SkPoint::Make(40*SK_Scalar1, 0);
- path.lineTo(endPt);
- return endPt;
- }
-
- static SkPoint AddMoveLine(SkPath& path, SkPoint& startPt) {
- SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
- SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
- path.moveTo(moveToPt);
- path.lineTo(endPt);
- return endPt;
- }
-
- static SkPoint AddMoveLineClose(SkPath& path, SkPoint& startPt) {
- SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
- SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
- path.moveTo(moveToPt);
- path.lineTo(endPt);
- path.close();
- return endPt;
- }
-
- static SkPoint AddQuad(SkPath& path, SkPoint& startPt) {
- SkPoint midPt = startPt + SkPoint::Make(20*SK_Scalar1, 5*SK_Scalar1);
- SkPoint endPt = startPt + SkPoint::Make(40*SK_Scalar1, 0);
- path.quadTo(midPt, endPt);
- return endPt;
- }
-
- static SkPoint AddMoveQuad(SkPath& path, SkPoint& startPt) {
- SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
- SkPoint midPt = moveToPt + SkPoint::Make(20*SK_Scalar1, 5*SK_Scalar1);
- SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
- path.moveTo(moveToPt);
- path.quadTo(midPt, endPt);
- return endPt;
- }
-
- static SkPoint AddMoveQuadClose(SkPath& path, SkPoint& startPt) {
- SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
- SkPoint midPt = moveToPt + SkPoint::Make(20*SK_Scalar1, 5*SK_Scalar1);
- SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
- path.moveTo(moveToPt);
- path.quadTo(midPt, endPt);
- path.close();
- return endPt;
- }
-
- static SkPoint AddCubic(SkPath& path, SkPoint& startPt) {
- SkPoint t1Pt = startPt + SkPoint::Make(15*SK_Scalar1, 5*SK_Scalar1);
- SkPoint t2Pt = startPt + SkPoint::Make(25*SK_Scalar1, 5*SK_Scalar1);
- SkPoint endPt = startPt + SkPoint::Make(40*SK_Scalar1, 0);
- path.cubicTo(t1Pt, t2Pt, endPt);
- return endPt;
- }
-
- static SkPoint AddMoveCubic(SkPath& path, SkPoint& startPt) {
- SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
- SkPoint t1Pt = moveToPt + SkPoint::Make(15*SK_Scalar1, 5*SK_Scalar1);
- SkPoint t2Pt = moveToPt + SkPoint::Make(25*SK_Scalar1, 5*SK_Scalar1);
- SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
- path.moveTo(moveToPt);
- path.cubicTo(t1Pt, t2Pt, endPt);
- return endPt;
- }
-
- static SkPoint AddMoveCubicClose(SkPath& path, SkPoint& startPt) {
- SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
- SkPoint t1Pt = moveToPt + SkPoint::Make(15*SK_Scalar1, 5*SK_Scalar1);
- SkPoint t2Pt = moveToPt + SkPoint::Make(25*SK_Scalar1, 5*SK_Scalar1);
- SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
- path.moveTo(moveToPt);
- path.cubicTo(t1Pt, t2Pt, endPt);
- path.close();
- return endPt;
- }
-
- void drawPath(SkPath& path, SkCanvas* canvas, SkColor color,
- const SkRect& clip, SkPaint::Cap cap, SkPaint::Join join,
- SkPaint::Style style, SkPath::FillType fill,
- SkScalar strokeWidth) {
- path.setFillType(fill);
- SkPaint paint;
- paint.setStrokeCap(cap);
- paint.setStrokeWidth(strokeWidth);
- paint.setStrokeJoin(join);
- paint.setColor(color);
- paint.setStyle(style);
- canvas->save();
- canvas->clipRect(clip);
- canvas->drawPath(path, paint);
- canvas->restore();
- }
-
- virtual void onDraw(SkCanvas* canvas) {
- static const AddSegmentFunc gSegmentFunctions[] = {
- AddMove,
- AddMoveClose,
- AddDegenLine,
- AddMoveDegenLine,
- AddMoveDegenLineClose,
- AddDegenQuad,
- AddMoveDegenQuad,
- AddMoveDegenQuadClose,
- AddDegenCubic,
- AddMoveDegenCubic,
- AddMoveDegenCubicClose,
- AddClose,
- AddLine,
- AddMoveLine,
- AddMoveLineClose,
- AddQuad,
- AddMoveQuad,
- AddMoveQuadClose,
- AddCubic,
- AddMoveCubic,
- AddMoveCubicClose
- };
- static const char* gSegmentNames[] = {
- "Move",
- "MoveClose",
- "DegenLine",
- "MoveDegenLine",
- "MoveDegenLineClose",
- "DegenQuad",
- "MoveDegenQuad",
- "MoveDegenQuadClose",
- "DegenCubic",
- "MoveDegenCubic",
- "MoveDegenCubicClose",
- "Close",
- "Line",
- "MoveLine",
- "MoveLineClose",
- "Quad",
- "MoveQuad",
- "MoveQuadClose",
- "Cubic",
- "MoveCubic",
- "MoveCubicClose"
- };
-
- struct FillAndName {
- SkPath::FillType fFill;
- const char* fName;
- };
- static const FillAndName gFills[] = {
- {SkPath::kWinding_FillType, "Winding"},
- {SkPath::kEvenOdd_FillType, "Even / Odd"},
- {SkPath::kInverseWinding_FillType, "Inverse Winding"},
- {SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"}
- };
- struct StyleAndName {
- SkPaint::Style fStyle;
- const char* fName;
- };
- static const StyleAndName gStyles[] = {
- {SkPaint::kFill_Style, "Fill"},
- {SkPaint::kStroke_Style, "Stroke 10"},
- {SkPaint::kStrokeAndFill_Style, "Stroke 10 And Fill"}
- };
- struct CapAndName {
- SkPaint::Cap fCap;
- SkPaint::Join fJoin;
- const char* fName;
- };
- static const CapAndName gCaps[] = {
- {SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"},
- {SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"},
- {SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"}
- };
-
- SkPaint titlePaint;
- titlePaint.setColor(SK_ColorBLACK);
- titlePaint.setAntiAlias(true);
- titlePaint.setLCDRenderText(true);
- titlePaint.setTextSize(15 * SK_Scalar1);
- const char title[] = "Random Paths Drawn Into Rectangle Clips With "
- "Indicated Style, Fill and Linecaps, "
- "with Stroke width 6";
- canvas->drawText(title, strlen(title),
- 20 * SK_Scalar1,
- 20 * SK_Scalar1,
- titlePaint);
-
- SkRandom rand;
- SkRect rect = SkRect::MakeWH(220*SK_Scalar1, 50*SK_Scalar1);
- canvas->save();
- canvas->translate(2*SK_Scalar1, 30 * SK_Scalar1); // The title
- canvas->save();
- unsigned numSegments = SK_ARRAY_COUNT(gSegmentFunctions);
- unsigned numCaps = SK_ARRAY_COUNT(gCaps);
- unsigned numStyles = SK_ARRAY_COUNT(gStyles);
- unsigned numFills = SK_ARRAY_COUNT(gFills);
- for (size_t row = 0; row < 6; ++row) {
- if (0 < row) {
- canvas->translate(0, rect.height() + 100*SK_Scalar1);
- }
- canvas->save();
- for (size_t column = 0; column < 4; ++column) {
- if (0 < column) {
- canvas->translate(rect.width() + 4*SK_Scalar1, 0);
- }
-
- SkColor color = 0xff007000;
- StyleAndName style = gStyles[(rand.nextU() >> 16) % numStyles];
- CapAndName cap = gCaps[(rand.nextU() >> 16) % numCaps];
- FillAndName fill = gFills[(rand.nextU() >> 16) % numFills];
- SkPath path;
- unsigned s1 = (rand.nextU() >> 16) % numSegments;
- unsigned s2 = (rand.nextU() >> 16) % numSegments;
- unsigned s3 = (rand.nextU() >> 16) % numSegments;
- unsigned s4 = (rand.nextU() >> 16) % numSegments;
- unsigned s5 = (rand.nextU() >> 16) % numSegments;
- SkPoint pt = SkPoint::Make(10*SK_Scalar1, 0);
- pt = gSegmentFunctions[s1](path, pt);
- pt = gSegmentFunctions[s2](path, pt);
- pt = gSegmentFunctions[s3](path, pt);
- pt = gSegmentFunctions[s4](path, pt);
- pt = gSegmentFunctions[s5](path, pt);
-
- this->drawPath(path, canvas, color, rect,
- cap.fCap, cap.fJoin, style.fStyle,
- fill.fFill, SK_Scalar1*6);
-
- SkPaint rectPaint;
- rectPaint.setColor(SK_ColorBLACK);
- rectPaint.setStyle(SkPaint::kStroke_Style);
- rectPaint.setStrokeWidth(-1);
- rectPaint.setAntiAlias(true);
- canvas->drawRect(rect, rectPaint);
-
- SkPaint labelPaint;
- labelPaint.setColor(color);
- labelPaint.setAntiAlias(true);
- labelPaint.setLCDRenderText(true);
- labelPaint.setTextSize(10 * SK_Scalar1);
- canvas->drawText(style.fName,
- strlen(style.fName),
- 0, rect.height() + 12 * SK_Scalar1,
- labelPaint);
- canvas->drawText(fill.fName,
- strlen(fill.fName),
- 0, rect.height() + 24 * SK_Scalar1,
- labelPaint);
- canvas->drawText(cap.fName,
- strlen(cap.fName),
- 0, rect.height() + 36 * SK_Scalar1,
- labelPaint);
- canvas->drawText(gSegmentNames[s1],
- strlen(gSegmentNames[s1]),
- 0, rect.height() + 48 * SK_Scalar1,
- labelPaint);
- canvas->drawText(gSegmentNames[s2],
- strlen(gSegmentNames[s2]),
- 0, rect.height() + 60 * SK_Scalar1,
- labelPaint);
- canvas->drawText(gSegmentNames[s3],
- strlen(gSegmentNames[s3]),
- 0, rect.height() + 72 * SK_Scalar1,
- labelPaint);
- canvas->drawText(gSegmentNames[s4],
- strlen(gSegmentNames[s4]),
- 0, rect.height() + 84 * SK_Scalar1,
- labelPaint);
- canvas->drawText(gSegmentNames[s5],
- strlen(gSegmentNames[s5]),
- 0, rect.height() + 96 * SK_Scalar1,
- labelPaint);
- }
- canvas->restore();
- }
- canvas->restore();
- canvas->restore();
- }
-
-private:
- typedef GM INHERITED;
-};
-
-//////////////////////////////////////////////////////////////////////////////
-
-static GM* MyFactory(void*) { return new DegenerateSegmentsGM; }
-static GMRegistry reg(MyFactory);
-
-}
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#include "gm.h"
+#include "SkCanvas.h"
+#include "SkPaint.h"
+#include "SkRandom.h"
+
+namespace skiagm {
+
+class DegenerateSegmentsGM : public GM {
+public:
+ DegenerateSegmentsGM() {}
+
+protected:
+ struct PathAndName {
+ SkPath fPath;
+ const char* fName1;
+ const char* fName2;
+ };
+
+ SkString onShortName() {
+ return SkString("degeneratesegments");
+ }
+
+ SkISize onISize() { return make_isize(896, 930); }
+
+ typedef SkPoint (*AddSegmentFunc)(SkPath&, SkPoint&);
+
+ // We need to use explicit commands here, instead of addPath, because we
+ // do not want the moveTo that is added at the beginning of a path to
+ // appear in the appended path.
+ static SkPoint AddMove(SkPath& path, SkPoint& startPt) {
+ SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
+ path.moveTo(moveToPt);
+ return moveToPt;
+ }
+
+ static SkPoint AddMoveClose(SkPath& path, SkPoint& startPt) {
+ SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
+ path.moveTo(moveToPt);
+ path.close();
+ return moveToPt;
+ }
+
+ static SkPoint AddDegenLine(SkPath& path, SkPoint& startPt) {
+ path.lineTo(startPt);
+ return startPt;
+ }
+
+ static SkPoint AddMoveDegenLine(SkPath& path, SkPoint& startPt) {
+ SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
+ path.moveTo(moveToPt);
+ path.lineTo(moveToPt);
+ return moveToPt;
+ }
+
+ static SkPoint AddMoveDegenLineClose(SkPath& path, SkPoint& startPt) {
+ SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
+ path.moveTo(moveToPt);
+ path.lineTo(moveToPt);
+ path.close();
+ return moveToPt;
+ }
+
+ static SkPoint AddDegenQuad(SkPath& path, SkPoint& startPt) {
+ path.quadTo(startPt, startPt);
+ return startPt;
+ }
+
+ static SkPoint AddMoveDegenQuad(SkPath& path, SkPoint& startPt) {
+ SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
+ path.moveTo(moveToPt);
+ path.quadTo(moveToPt, moveToPt);
+ return moveToPt;
+ }
+
+ static SkPoint AddMoveDegenQuadClose(SkPath& path, SkPoint& startPt) {
+ SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
+ path.moveTo(moveToPt);
+ path.quadTo(moveToPt, moveToPt);
+ path.close();
+ return moveToPt;
+ }
+
+ static SkPoint AddDegenCubic(SkPath& path, SkPoint& startPt) {
+ path.cubicTo(startPt, startPt, startPt);
+ return startPt;
+ }
+
+ static SkPoint AddMoveDegenCubic(SkPath& path, SkPoint& startPt) {
+ SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
+ path.moveTo(moveToPt);
+ path.cubicTo(moveToPt, moveToPt, moveToPt);
+ return moveToPt;
+ }
+
+ static SkPoint AddMoveDegenCubicClose(SkPath& path, SkPoint& startPt) {
+ SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
+ path.moveTo(moveToPt);
+ path.cubicTo(moveToPt, moveToPt, moveToPt);
+ path.close();
+ return moveToPt;
+ }
+
+ static SkPoint AddClose(SkPath& path, SkPoint& startPt) {
+ path.close();
+ return startPt;
+ }
+
+ static SkPoint AddLine(SkPath& path, SkPoint& startPt) {
+ SkPoint endPt = startPt + SkPoint::Make(40*SK_Scalar1, 0);
+ path.lineTo(endPt);
+ return endPt;
+ }
+
+ static SkPoint AddMoveLine(SkPath& path, SkPoint& startPt) {
+ SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
+ SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
+ path.moveTo(moveToPt);
+ path.lineTo(endPt);
+ return endPt;
+ }
+
+ static SkPoint AddMoveLineClose(SkPath& path, SkPoint& startPt) {
+ SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
+ SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
+ path.moveTo(moveToPt);
+ path.lineTo(endPt);
+ path.close();
+ return endPt;
+ }
+
+ static SkPoint AddQuad(SkPath& path, SkPoint& startPt) {
+ SkPoint midPt = startPt + SkPoint::Make(20*SK_Scalar1, 5*SK_Scalar1);
+ SkPoint endPt = startPt + SkPoint::Make(40*SK_Scalar1, 0);
+ path.quadTo(midPt, endPt);
+ return endPt;
+ }
+
+ static SkPoint AddMoveQuad(SkPath& path, SkPoint& startPt) {
+ SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
+ SkPoint midPt = moveToPt + SkPoint::Make(20*SK_Scalar1, 5*SK_Scalar1);
+ SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
+ path.moveTo(moveToPt);
+ path.quadTo(midPt, endPt);
+ return endPt;
+ }
+
+ static SkPoint AddMoveQuadClose(SkPath& path, SkPoint& startPt) {
+ SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
+ SkPoint midPt = moveToPt + SkPoint::Make(20*SK_Scalar1, 5*SK_Scalar1);
+ SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
+ path.moveTo(moveToPt);
+ path.quadTo(midPt, endPt);
+ path.close();
+ return endPt;
+ }
+
+ static SkPoint AddCubic(SkPath& path, SkPoint& startPt) {
+ SkPoint t1Pt = startPt + SkPoint::Make(15*SK_Scalar1, 5*SK_Scalar1);
+ SkPoint t2Pt = startPt + SkPoint::Make(25*SK_Scalar1, 5*SK_Scalar1);
+ SkPoint endPt = startPt + SkPoint::Make(40*SK_Scalar1, 0);
+ path.cubicTo(t1Pt, t2Pt, endPt);
+ return endPt;
+ }
+
+ static SkPoint AddMoveCubic(SkPath& path, SkPoint& startPt) {
+ SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
+ SkPoint t1Pt = moveToPt + SkPoint::Make(15*SK_Scalar1, 5*SK_Scalar1);
+ SkPoint t2Pt = moveToPt + SkPoint::Make(25*SK_Scalar1, 5*SK_Scalar1);
+ SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
+ path.moveTo(moveToPt);
+ path.cubicTo(t1Pt, t2Pt, endPt);
+ return endPt;
+ }
+
+ static SkPoint AddMoveCubicClose(SkPath& path, SkPoint& startPt) {
+ SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
+ SkPoint t1Pt = moveToPt + SkPoint::Make(15*SK_Scalar1, 5*SK_Scalar1);
+ SkPoint t2Pt = moveToPt + SkPoint::Make(25*SK_Scalar1, 5*SK_Scalar1);
+ SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
+ path.moveTo(moveToPt);
+ path.cubicTo(t1Pt, t2Pt, endPt);
+ path.close();
+ return endPt;
+ }
+
+ void drawPath(SkPath& path, SkCanvas* canvas, SkColor color,
+ const SkRect& clip, SkPaint::Cap cap, SkPaint::Join join,
+ SkPaint::Style style, SkPath::FillType fill,
+ SkScalar strokeWidth) {
+ path.setFillType(fill);
+ SkPaint paint;
+ paint.setStrokeCap(cap);
+ paint.setStrokeWidth(strokeWidth);
+ paint.setStrokeJoin(join);
+ paint.setColor(color);
+ paint.setStyle(style);
+ canvas->save();
+ canvas->clipRect(clip);
+ canvas->drawPath(path, paint);
+ canvas->restore();
+ }
+
+ virtual void onDraw(SkCanvas* canvas) {
+ static const AddSegmentFunc gSegmentFunctions[] = {
+ AddMove,
+ AddMoveClose,
+ AddDegenLine,
+ AddMoveDegenLine,
+ AddMoveDegenLineClose,
+ AddDegenQuad,
+ AddMoveDegenQuad,
+ AddMoveDegenQuadClose,
+ AddDegenCubic,
+ AddMoveDegenCubic,
+ AddMoveDegenCubicClose,
+ AddClose,
+ AddLine,
+ AddMoveLine,
+ AddMoveLineClose,
+ AddQuad,
+ AddMoveQuad,
+ AddMoveQuadClose,
+ AddCubic,
+ AddMoveCubic,
+ AddMoveCubicClose
+ };
+ static const char* gSegmentNames[] = {
+ "Move",
+ "MoveClose",
+ "DegenLine",
+ "MoveDegenLine",
+ "MoveDegenLineClose",
+ "DegenQuad",
+ "MoveDegenQuad",
+ "MoveDegenQuadClose",
+ "DegenCubic",
+ "MoveDegenCubic",
+ "MoveDegenCubicClose",
+ "Close",
+ "Line",
+ "MoveLine",
+ "MoveLineClose",
+ "Quad",
+ "MoveQuad",
+ "MoveQuadClose",
+ "Cubic",
+ "MoveCubic",
+ "MoveCubicClose"
+ };
+
+ struct FillAndName {
+ SkPath::FillType fFill;
+ const char* fName;
+ };
+ static const FillAndName gFills[] = {
+ {SkPath::kWinding_FillType, "Winding"},
+ {SkPath::kEvenOdd_FillType, "Even / Odd"},
+ {SkPath::kInverseWinding_FillType, "Inverse Winding"},
+ {SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"}
+ };
+ struct StyleAndName {
+ SkPaint::Style fStyle;
+ const char* fName;
+ };
+ static const StyleAndName gStyles[] = {
+ {SkPaint::kFill_Style, "Fill"},
+ {SkPaint::kStroke_Style, "Stroke 10"},
+ {SkPaint::kStrokeAndFill_Style, "Stroke 10 And Fill"}
+ };
+ struct CapAndName {
+ SkPaint::Cap fCap;
+ SkPaint::Join fJoin;
+ const char* fName;
+ };
+ static const CapAndName gCaps[] = {
+ {SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"},
+ {SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"},
+ {SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"}
+ };
+
+ SkPaint titlePaint;
+ titlePaint.setColor(SK_ColorBLACK);
+ titlePaint.setAntiAlias(true);
+ titlePaint.setLCDRenderText(true);
+ titlePaint.setTextSize(15 * SK_Scalar1);
+ const char title[] = "Random Paths Drawn Into Rectangle Clips With "
+ "Indicated Style, Fill and Linecaps, "
+ "with Stroke width 6";
+ canvas->drawText(title, strlen(title),
+ 20 * SK_Scalar1,
+ 20 * SK_Scalar1,
+ titlePaint);
+
+ SkLCGRandom rand;
+ SkRect rect = SkRect::MakeWH(220*SK_Scalar1, 50*SK_Scalar1);
+ canvas->save();
+ canvas->translate(2*SK_Scalar1, 30 * SK_Scalar1); // The title
+ canvas->save();
+ unsigned numSegments = SK_ARRAY_COUNT(gSegmentFunctions);
+ unsigned numCaps = SK_ARRAY_COUNT(gCaps);
+ unsigned numStyles = SK_ARRAY_COUNT(gStyles);
+ unsigned numFills = SK_ARRAY_COUNT(gFills);
+ for (size_t row = 0; row < 6; ++row) {
+ if (0 < row) {
+ canvas->translate(0, rect.height() + 100*SK_Scalar1);
+ }
+ canvas->save();
+ for (size_t column = 0; column < 4; ++column) {
+ if (0 < column) {
+ canvas->translate(rect.width() + 4*SK_Scalar1, 0);
+ }
+
+ SkColor color = 0xff007000;
+ StyleAndName style = gStyles[(rand.nextU() >> 16) % numStyles];
+ CapAndName cap = gCaps[(rand.nextU() >> 16) % numCaps];
+ FillAndName fill = gFills[(rand.nextU() >> 16) % numFills];
+ SkPath path;
+ unsigned s1 = (rand.nextU() >> 16) % numSegments;
+ unsigned s2 = (rand.nextU() >> 16) % numSegments;
+ unsigned s3 = (rand.nextU() >> 16) % numSegments;
+ unsigned s4 = (rand.nextU() >> 16) % numSegments;
+ unsigned s5 = (rand.nextU() >> 16) % numSegments;
+ SkPoint pt = SkPoint::Make(10*SK_Scalar1, 0);
+ pt = gSegmentFunctions[s1](path, pt);
+ pt = gSegmentFunctions[s2](path, pt);
+ pt = gSegmentFunctions[s3](path, pt);
+ pt = gSegmentFunctions[s4](path, pt);
+ pt = gSegmentFunctions[s5](path, pt);
+
+ this->drawPath(path, canvas, color, rect,
+ cap.fCap, cap.fJoin, style.fStyle,
+ fill.fFill, SK_Scalar1*6);
+
+ SkPaint rectPaint;
+ rectPaint.setColor(SK_ColorBLACK);
+ rectPaint.setStyle(SkPaint::kStroke_Style);
+ rectPaint.setStrokeWidth(-1);
+ rectPaint.setAntiAlias(true);
+ canvas->drawRect(rect, rectPaint);
+
+ SkPaint labelPaint;
+ labelPaint.setColor(color);
+ labelPaint.setAntiAlias(true);
+ labelPaint.setLCDRenderText(true);
+ labelPaint.setTextSize(10 * SK_Scalar1);
+ canvas->drawText(style.fName,
+ strlen(style.fName),
+ 0, rect.height() + 12 * SK_Scalar1,
+ labelPaint);
+ canvas->drawText(fill.fName,
+ strlen(fill.fName),
+ 0, rect.height() + 24 * SK_Scalar1,
+ labelPaint);
+ canvas->drawText(cap.fName,
+ strlen(cap.fName),
+ 0, rect.height() + 36 * SK_Scalar1,
+ labelPaint);
+ canvas->drawText(gSegmentNames[s1],
+ strlen(gSegmentNames[s1]),
+ 0, rect.height() + 48 * SK_Scalar1,
+ labelPaint);
+ canvas->drawText(gSegmentNames[s2],
+ strlen(gSegmentNames[s2]),
+ 0, rect.height() + 60 * SK_Scalar1,
+ labelPaint);
+ canvas->drawText(gSegmentNames[s3],
+ strlen(gSegmentNames[s3]),
+ 0, rect.height() + 72 * SK_Scalar1,
+ labelPaint);
+ canvas->drawText(gSegmentNames[s4],
+ strlen(gSegmentNames[s4]),
+ 0, rect.height() + 84 * SK_Scalar1,
+ labelPaint);
+ canvas->drawText(gSegmentNames[s5],
+ strlen(gSegmentNames[s5]),
+ 0, rect.height() + 96 * SK_Scalar1,
+ labelPaint);
+ }
+ canvas->restore();
+ }
+ canvas->restore();
+ canvas->restore();
+ }
+
+private:
+ typedef GM INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static GM* MyFactory(void*) { return new DegenerateSegmentsGM; }
+static GMRegistry reg(MyFactory);
+
+}
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