f9d610179d
Remove SkLCGRandom. We already decided the new one was better, which is why we wrote the new SkRandom. Convert GMs that were using SkLCGRandom to use the improved SkRandom. Motivated by the fact that these GMs draw differently on some runs. We believe this to be a result of using the old SkLCGRandom. Add each of the tests that were using SkLCGRandom to ignore-tests.txt, since we expect they'll draw differently using SkRandom. Move a trimmed down version of SkLCGRandom into SkDiscretePathEffect. In order to preserve the old behavior, trim down SkLCGRandom to only the methods used by SkDiscretePathEffect, and hide it in SkDiscretePathEffect's cpp file. BUG=skia:3241 Review URL: https://codereview.chromium.org/805963002
407 lines
14 KiB
C++
407 lines
14 KiB
C++
/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "SkCanvas.h"
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#include "SkPaint.h"
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#include "SkRandom.h"
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namespace skiagm {
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class DegenerateSegmentsGM : public GM {
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public:
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DegenerateSegmentsGM() {}
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protected:
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struct PathAndName {
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SkPath fPath;
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const char* fName1;
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const char* fName2;
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};
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virtual uint32_t onGetFlags() const SK_OVERRIDE {
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return kSkipTiled_Flag;
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}
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SkString onShortName() {
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return SkString("degeneratesegments");
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}
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SkISize onISize() { return SkISize::Make(896, 930); }
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typedef SkPoint (*AddSegmentFunc)(SkPath&, SkPoint&);
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// We need to use explicit commands here, instead of addPath, because we
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// do not want the moveTo that is added at the beginning of a path to
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// appear in the appended path.
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static SkPoint AddMove(SkPath& path, SkPoint& startPt) {
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SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
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path.moveTo(moveToPt);
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return moveToPt;
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}
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static SkPoint AddMoveClose(SkPath& path, SkPoint& startPt) {
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SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
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path.moveTo(moveToPt);
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path.close();
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return moveToPt;
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}
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static SkPoint AddDegenLine(SkPath& path, SkPoint& startPt) {
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path.lineTo(startPt);
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return startPt;
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}
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static SkPoint AddMoveDegenLine(SkPath& path, SkPoint& startPt) {
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SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
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path.moveTo(moveToPt);
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path.lineTo(moveToPt);
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return moveToPt;
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}
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static SkPoint AddMoveDegenLineClose(SkPath& path, SkPoint& startPt) {
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SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
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path.moveTo(moveToPt);
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path.lineTo(moveToPt);
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path.close();
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return moveToPt;
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}
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static SkPoint AddDegenQuad(SkPath& path, SkPoint& startPt) {
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path.quadTo(startPt, startPt);
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return startPt;
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}
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static SkPoint AddMoveDegenQuad(SkPath& path, SkPoint& startPt) {
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SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
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path.moveTo(moveToPt);
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path.quadTo(moveToPt, moveToPt);
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return moveToPt;
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}
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static SkPoint AddMoveDegenQuadClose(SkPath& path, SkPoint& startPt) {
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SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
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path.moveTo(moveToPt);
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path.quadTo(moveToPt, moveToPt);
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path.close();
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return moveToPt;
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}
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static SkPoint AddDegenCubic(SkPath& path, SkPoint& startPt) {
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path.cubicTo(startPt, startPt, startPt);
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return startPt;
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}
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static SkPoint AddMoveDegenCubic(SkPath& path, SkPoint& startPt) {
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SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
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path.moveTo(moveToPt);
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path.cubicTo(moveToPt, moveToPt, moveToPt);
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return moveToPt;
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}
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static SkPoint AddMoveDegenCubicClose(SkPath& path, SkPoint& startPt) {
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SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
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path.moveTo(moveToPt);
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path.cubicTo(moveToPt, moveToPt, moveToPt);
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path.close();
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return moveToPt;
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}
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static SkPoint AddClose(SkPath& path, SkPoint& startPt) {
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path.close();
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return startPt;
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}
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static SkPoint AddLine(SkPath& path, SkPoint& startPt) {
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SkPoint endPt = startPt + SkPoint::Make(40*SK_Scalar1, 0);
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path.lineTo(endPt);
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return endPt;
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}
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static SkPoint AddMoveLine(SkPath& path, SkPoint& startPt) {
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SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
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SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
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path.moveTo(moveToPt);
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path.lineTo(endPt);
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return endPt;
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}
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static SkPoint AddMoveLineClose(SkPath& path, SkPoint& startPt) {
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SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
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SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
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path.moveTo(moveToPt);
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path.lineTo(endPt);
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path.close();
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return endPt;
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}
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static SkPoint AddQuad(SkPath& path, SkPoint& startPt) {
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SkPoint midPt = startPt + SkPoint::Make(20*SK_Scalar1, 5*SK_Scalar1);
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SkPoint endPt = startPt + SkPoint::Make(40*SK_Scalar1, 0);
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path.quadTo(midPt, endPt);
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return endPt;
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}
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static SkPoint AddMoveQuad(SkPath& path, SkPoint& startPt) {
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SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
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SkPoint midPt = moveToPt + SkPoint::Make(20*SK_Scalar1, 5*SK_Scalar1);
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SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
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path.moveTo(moveToPt);
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path.quadTo(midPt, endPt);
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return endPt;
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}
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static SkPoint AddMoveQuadClose(SkPath& path, SkPoint& startPt) {
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SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
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SkPoint midPt = moveToPt + SkPoint::Make(20*SK_Scalar1, 5*SK_Scalar1);
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SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
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path.moveTo(moveToPt);
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path.quadTo(midPt, endPt);
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path.close();
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return endPt;
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}
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static SkPoint AddCubic(SkPath& path, SkPoint& startPt) {
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SkPoint t1Pt = startPt + SkPoint::Make(15*SK_Scalar1, 5*SK_Scalar1);
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SkPoint t2Pt = startPt + SkPoint::Make(25*SK_Scalar1, 5*SK_Scalar1);
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SkPoint endPt = startPt + SkPoint::Make(40*SK_Scalar1, 0);
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path.cubicTo(t1Pt, t2Pt, endPt);
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return endPt;
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}
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static SkPoint AddMoveCubic(SkPath& path, SkPoint& startPt) {
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SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
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SkPoint t1Pt = moveToPt + SkPoint::Make(15*SK_Scalar1, 5*SK_Scalar1);
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SkPoint t2Pt = moveToPt + SkPoint::Make(25*SK_Scalar1, 5*SK_Scalar1);
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SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
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path.moveTo(moveToPt);
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path.cubicTo(t1Pt, t2Pt, endPt);
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return endPt;
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}
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static SkPoint AddMoveCubicClose(SkPath& path, SkPoint& startPt) {
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SkPoint moveToPt = startPt + SkPoint::Make(0, 10*SK_Scalar1);
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SkPoint t1Pt = moveToPt + SkPoint::Make(15*SK_Scalar1, 5*SK_Scalar1);
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SkPoint t2Pt = moveToPt + SkPoint::Make(25*SK_Scalar1, 5*SK_Scalar1);
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SkPoint endPt = moveToPt + SkPoint::Make(40*SK_Scalar1, 0);
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path.moveTo(moveToPt);
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path.cubicTo(t1Pt, t2Pt, endPt);
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path.close();
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return endPt;
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}
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void drawPath(SkPath& path, SkCanvas* canvas, SkColor color,
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const SkRect& clip, SkPaint::Cap cap, SkPaint::Join join,
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SkPaint::Style style, SkPath::FillType fill,
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SkScalar strokeWidth) {
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path.setFillType(fill);
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SkPaint paint;
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paint.setStrokeCap(cap);
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paint.setStrokeWidth(strokeWidth);
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paint.setStrokeJoin(join);
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paint.setColor(color);
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paint.setStyle(style);
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canvas->save();
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canvas->clipRect(clip);
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canvas->drawPath(path, paint);
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canvas->restore();
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}
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virtual void onDraw(SkCanvas* canvas) {
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static const AddSegmentFunc gSegmentFunctions[] = {
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AddMove,
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AddMoveClose,
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AddDegenLine,
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AddMoveDegenLine,
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AddMoveDegenLineClose,
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AddDegenQuad,
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AddMoveDegenQuad,
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AddMoveDegenQuadClose,
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AddDegenCubic,
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AddMoveDegenCubic,
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AddMoveDegenCubicClose,
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AddClose,
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AddLine,
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AddMoveLine,
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AddMoveLineClose,
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AddQuad,
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AddMoveQuad,
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AddMoveQuadClose,
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AddCubic,
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AddMoveCubic,
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AddMoveCubicClose
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};
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static const char* gSegmentNames[] = {
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"Move",
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"MoveClose",
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"DegenLine",
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"MoveDegenLine",
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"MoveDegenLineClose",
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"DegenQuad",
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"MoveDegenQuad",
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"MoveDegenQuadClose",
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"DegenCubic",
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"MoveDegenCubic",
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"MoveDegenCubicClose",
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"Close",
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"Line",
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"MoveLine",
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"MoveLineClose",
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"Quad",
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"MoveQuad",
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"MoveQuadClose",
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"Cubic",
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"MoveCubic",
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"MoveCubicClose"
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};
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struct FillAndName {
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SkPath::FillType fFill;
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const char* fName;
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};
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static const FillAndName gFills[] = {
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{SkPath::kWinding_FillType, "Winding"},
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{SkPath::kEvenOdd_FillType, "Even / Odd"},
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{SkPath::kInverseWinding_FillType, "Inverse Winding"},
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{SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"}
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};
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struct StyleAndName {
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SkPaint::Style fStyle;
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const char* fName;
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};
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static const StyleAndName gStyles[] = {
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{SkPaint::kFill_Style, "Fill"},
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{SkPaint::kStroke_Style, "Stroke 10"},
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{SkPaint::kStrokeAndFill_Style, "Stroke 10 And Fill"}
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};
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struct CapAndName {
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SkPaint::Cap fCap;
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SkPaint::Join fJoin;
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const char* fName;
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};
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static const CapAndName gCaps[] = {
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{SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"},
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{SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"},
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{SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"}
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};
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SkPaint titlePaint;
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titlePaint.setColor(SK_ColorBLACK);
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titlePaint.setAntiAlias(true);
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sk_tool_utils::set_portable_typeface(&titlePaint);
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titlePaint.setLCDRenderText(true);
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titlePaint.setTextSize(15 * SK_Scalar1);
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const char title[] = "Random Paths Drawn Into Rectangle Clips With "
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"Indicated Style, Fill and Linecaps, "
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"with Stroke width 6";
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canvas->drawText(title, strlen(title),
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20 * SK_Scalar1,
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20 * SK_Scalar1,
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titlePaint);
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SkRandom rand;
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SkRect rect = SkRect::MakeWH(220*SK_Scalar1, 50*SK_Scalar1);
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canvas->save();
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canvas->translate(2*SK_Scalar1, 30 * SK_Scalar1); // The title
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canvas->save();
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unsigned numSegments = SK_ARRAY_COUNT(gSegmentFunctions);
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unsigned numCaps = SK_ARRAY_COUNT(gCaps);
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unsigned numStyles = SK_ARRAY_COUNT(gStyles);
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unsigned numFills = SK_ARRAY_COUNT(gFills);
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for (size_t row = 0; row < 6; ++row) {
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if (0 < row) {
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canvas->translate(0, rect.height() + 100*SK_Scalar1);
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}
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canvas->save();
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for (size_t column = 0; column < 4; ++column) {
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if (0 < column) {
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canvas->translate(rect.width() + 4*SK_Scalar1, 0);
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}
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SkColor color = 0xff007000;
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StyleAndName style = gStyles[(rand.nextU() >> 16) % numStyles];
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CapAndName cap = gCaps[(rand.nextU() >> 16) % numCaps];
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FillAndName fill = gFills[(rand.nextU() >> 16) % numFills];
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SkPath path;
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unsigned s1 = (rand.nextU() >> 16) % numSegments;
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unsigned s2 = (rand.nextU() >> 16) % numSegments;
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unsigned s3 = (rand.nextU() >> 16) % numSegments;
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unsigned s4 = (rand.nextU() >> 16) % numSegments;
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unsigned s5 = (rand.nextU() >> 16) % numSegments;
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SkPoint pt = SkPoint::Make(10*SK_Scalar1, 0);
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pt = gSegmentFunctions[s1](path, pt);
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pt = gSegmentFunctions[s2](path, pt);
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pt = gSegmentFunctions[s3](path, pt);
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pt = gSegmentFunctions[s4](path, pt);
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pt = gSegmentFunctions[s5](path, pt);
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this->drawPath(path, canvas, color, rect,
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cap.fCap, cap.fJoin, style.fStyle,
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fill.fFill, SK_Scalar1*6);
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SkPaint rectPaint;
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rectPaint.setColor(SK_ColorBLACK);
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rectPaint.setStyle(SkPaint::kStroke_Style);
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rectPaint.setStrokeWidth(-1);
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rectPaint.setAntiAlias(true);
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canvas->drawRect(rect, rectPaint);
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SkPaint labelPaint;
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labelPaint.setColor(color);
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labelPaint.setAntiAlias(true);
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sk_tool_utils::set_portable_typeface(&labelPaint);
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labelPaint.setLCDRenderText(true);
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labelPaint.setTextSize(10 * SK_Scalar1);
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canvas->drawText(style.fName,
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strlen(style.fName),
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0, rect.height() + 12 * SK_Scalar1,
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labelPaint);
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canvas->drawText(fill.fName,
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strlen(fill.fName),
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0, rect.height() + 24 * SK_Scalar1,
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labelPaint);
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canvas->drawText(cap.fName,
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strlen(cap.fName),
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0, rect.height() + 36 * SK_Scalar1,
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labelPaint);
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canvas->drawText(gSegmentNames[s1],
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strlen(gSegmentNames[s1]),
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0, rect.height() + 48 * SK_Scalar1,
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labelPaint);
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canvas->drawText(gSegmentNames[s2],
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strlen(gSegmentNames[s2]),
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0, rect.height() + 60 * SK_Scalar1,
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labelPaint);
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canvas->drawText(gSegmentNames[s3],
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strlen(gSegmentNames[s3]),
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0, rect.height() + 72 * SK_Scalar1,
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labelPaint);
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canvas->drawText(gSegmentNames[s4],
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strlen(gSegmentNames[s4]),
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0, rect.height() + 84 * SK_Scalar1,
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labelPaint);
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canvas->drawText(gSegmentNames[s5],
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strlen(gSegmentNames[s5]),
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0, rect.height() + 96 * SK_Scalar1,
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labelPaint);
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}
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canvas->restore();
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}
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canvas->restore();
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canvas->restore();
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}
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private:
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static GM* MyFactory(void*) { return new DegenerateSegmentsGM; }
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static GMRegistry reg(MyFactory);
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}
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