| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm.h" |
| #include "SkParsePath.h" |
| #include "SkPath.h" |
| |
| /* |
| The arcto test below should draw the same as this SVG: |
| (Note that Skia's arcTo Direction parameter value is opposite SVG's sweep value, e.g. 0 / 1) |
| |
| <svg width="500" height="600"> |
| <path d="M 50,100 A50,50, 0,0,1, 150,200" style="stroke:#660000; fill:none; stroke-width:2" /> |
| <path d="M100,100 A50,100, 0,0,1, 200,200" style="stroke:#660000; fill:none; stroke-width:2" /> |
| <path d="M150,100 A50,50, 45,0,1, 250,200" style="stroke:#660000; fill:none; stroke-width:2" /> |
| <path d="M200,100 A50,100, 45,0,1, 300,200" style="stroke:#660000; fill:none; stroke-width:2" /> |
| |
| <path d="M150,200 A50,50, 0,1,0, 150,300" style="stroke:#660000; fill:none; stroke-width:2" /> |
| <path d="M200,200 A50,100, 0,1,0, 200,300" style="stroke:#660000; fill:none; stroke-width:2" /> |
| <path d="M250,200 A50,50, 45,1,0, 250,300" style="stroke:#660000; fill:none; stroke-width:2" /> |
| <path d="M300,200 A50,100, 45,1,0, 300,300" style="stroke:#660000; fill:none; stroke-width:2" /> |
| |
| <path d="M250,400 A120,80 0 0,0 250,500" |
| fill="none" stroke="red" stroke-width="5" /> |
| |
| <path d="M250,400 A120,80 0 1,1 250,500" |
| fill="none" stroke="green" stroke-width="5"/> |
| |
| <path d="M250,400 A120,80 0 1,0 250,500" |
| fill="none" stroke="purple" stroke-width="5"/> |
| |
| <path d="M250,400 A120,80 0 0,1 250,500" |
| fill="none" stroke="blue" stroke-width="5"/> |
| |
| <path d="M100,100 A 0, 0 0 0,1 200,200" |
| fill="none" stroke="blue" stroke-width="5" stroke-linecap="round"/> |
| |
| <path d="M200,100 A 80,80 0 0,1 200,100" |
| fill="none" stroke="blue" stroke-width="5" stroke-linecap="round"/> |
| </svg> |
| */ |
| |
| DEF_SIMPLE_GM(arcto, canvas, 500, 600) { |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setStyle(SkPaint::kStroke_Style); |
| paint.setStrokeWidth(2); |
| paint.setColor(0xFF660000); |
| // canvas->scale(2, 2); // for testing on retina |
| SkRect oval = SkRect::MakeXYWH(100, 100, 100, 100); |
| SkPath svgArc; |
| |
| for (int angle = 0; angle <= 45; angle += 45) { |
| for (int oHeight = 2; oHeight >= 1; --oHeight) { |
| SkScalar ovalHeight = oval.height() / oHeight; |
| svgArc.moveTo(oval.fLeft, oval.fTop); |
| svgArc.arcTo(oval.width() / 2, ovalHeight, SkIntToScalar(angle), SkPath::kSmall_ArcSize, |
| SkPath::kCW_Direction, oval.right(), oval.bottom()); |
| canvas->drawPath(svgArc, paint); |
| svgArc.reset(); |
| |
| svgArc.moveTo(oval.fLeft + 100, oval.fTop + 100); |
| svgArc.arcTo(oval.width() / 2, ovalHeight, SkIntToScalar(angle), SkPath::kLarge_ArcSize, |
| SkPath::kCCW_Direction, oval.right(), oval.bottom() + 100); |
| canvas->drawPath(svgArc, paint); |
| oval.offset(50, 0); |
| svgArc.reset(); |
| |
| } |
| } |
| |
| paint.setStrokeWidth(5); |
| const SkColor purple = 0xFF800080; |
| const SkColor darkgreen = 0xFF008000; |
| const SkColor colors[] = { SK_ColorRED, darkgreen, purple, SK_ColorBLUE }; |
| const char* arcstrs[] = { |
| "M250,400 A120,80 0 0,0 250,500", |
| "M250,400 A120,80 0 1,1 250,500", |
| "M250,400 A120,80 0 1,0 250,500", |
| "M250,400 A120,80 0 0,1 250,500" |
| }; |
| int cIndex = 0; |
| for (const char* arcstr : arcstrs) { |
| SkParsePath::FromSVGString(arcstr, &svgArc); |
| paint.setColor(colors[cIndex++]); |
| canvas->drawPath(svgArc, paint); |
| } |
| |
| // test that zero length arcs still draw round cap |
| paint.setStrokeCap(SkPaint::kRound_Cap); |
| SkPath path; |
| path.moveTo(100, 100); |
| path.arcTo(0, 0, 0, SkPath::kLarge_ArcSize, SkPath::kCW_Direction, 200, 200); |
| canvas->drawPath(path, paint); |
| |
| path.reset(); |
| path.moveTo(200, 100); |
| path.arcTo(80, 80, 0, SkPath::kLarge_ArcSize, SkPath::kCW_Direction, 200, 100); |
| canvas->drawPath(path, paint); |
| } |
| |
| #include "random_parse_path.h" |
| #include "SkRandom.h" |
| |
| /* The test below generates a reference image using SVG. To compare the result for correctness, |
| enable the define below and then view the generated SVG in a browser. |
| */ |
| #define GENERATE_SVG_REFERENCE 0 |
| |
| #if GENERATE_SVG_REFERENCE |
| #include "SkOSFile.h" |
| #endif |
| |
| enum { |
| kParsePathTestDimension = 500 |
| }; |
| |
| DEF_SIMPLE_GM(parsedpaths, canvas, kParsePathTestDimension, kParsePathTestDimension) { |
| #if GENERATE_SVG_REFERENCE |
| FILE* file = sk_fopen("svgout.htm", kWrite_SkFILE_Flag); |
| SkString str; |
| str.printf("<svg width=\"%d\" height=\"%d\">\n", kParsePathTestDimension, |
| kParsePathTestDimension); |
| sk_fwrite(str.c_str(), str.size(), file); |
| #endif |
| SkRandom rand; |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| for (int xStart = 0; xStart < kParsePathTestDimension; xStart += 100) { |
| canvas->save(); |
| for (int yStart = 0; yStart < kParsePathTestDimension; yStart += 100) { |
| #if GENERATE_SVG_REFERENCE |
| str.printf("<g transform='translate(%d,%d) scale(%d,%d)'>\n", xStart, yStart, |
| 1, 1); |
| sk_fwrite(str.c_str(), str.size(), file); |
| str.printf("<clipPath id='clip_%d_%d'>\n", xStart, yStart); |
| sk_fwrite(str.c_str(), str.size(), file); |
| str.printf("<rect width='100' height='100' x='0' y='0'></rect>\n"); |
| sk_fwrite(str.c_str(), str.size(), file); |
| str.printf("</clipPath>\n"); |
| sk_fwrite(str.c_str(), str.size(), file); |
| #endif |
| int count = 3; |
| do { |
| SkPath path; |
| SkString spec; |
| uint32_t y = rand.nextRangeU(30, 70); |
| uint32_t x = rand.nextRangeU(30, 70); |
| spec.printf("M %d,%d\n", x, y); |
| uint32_t count = rand.nextRangeU(0, 10); |
| for (uint32_t i = 0; i < count; ++i) { |
| spec.append(MakeRandomParsePathPiece(&rand)); |
| } |
| SkAssertResult(SkParsePath::FromSVGString(spec.c_str(), &path)); |
| paint.setColor(rand.nextU()); |
| canvas->save(); |
| canvas->clipRect(SkRect::MakeIWH(100, 100)); |
| canvas->drawPath(path, paint); |
| canvas->restore(); |
| #if GENERATE_SVG_REFERENCE |
| str.printf("<path d='\n"); |
| sk_fwrite(str.c_str(), str.size(), file); |
| sk_fwrite(spec.c_str(), spec.size(), file); |
| str.printf("\n' fill='#%06x' fill-opacity='%g'", paint.getColor() & 0xFFFFFF, |
| paint.getAlpha() / 255.f); |
| sk_fwrite(str.c_str(), str.size(), file); |
| str.printf(" clip-path='url(#clip_%d_%d)'/>\n", xStart, yStart); |
| sk_fwrite(str.c_str(), str.size(), file); |
| #endif |
| } while (--count > 0); |
| #if GENERATE_SVG_REFERENCE |
| str.printf("</g>\n"); |
| sk_fwrite(str.c_str(), str.size(), file); |
| #endif |
| canvas->translate(0, 100); |
| } |
| canvas->restore(); |
| canvas->translate(100, 0); |
| } |
| #if GENERATE_SVG_REFERENCE |
| const char trailer[] = "</svg>\n"; |
| sk_fwrite(trailer, sizeof(trailer) - 1, file); |
| sk_fclose(file); |
| #endif |
| } |
| |
| DEF_SIMPLE_GM(bug593049, canvas, 300, 300) { |
| canvas->translate(111, 0); |
| |
| SkPath p; |
| p.moveTo(-43.44464063610148f, 79.43535936389853f); |
| const SkScalar yOffset = 122.88f; |
| const SkScalar radius = 61.44f; |
| SkRect oval = SkRect::MakeXYWH(-radius, yOffset - radius, 2 * radius, 2 * radius); |
| p.arcTo(oval, 1.25f * 180, .5f * 180, false); |
| |
| SkPaint paint; |
| paint.setStyle(SkPaint::kStroke_Style); |
| paint.setStrokeCap(SkPaint::kRound_Cap); |
| paint.setStrokeWidth(15.36f); |
| |
| canvas->drawPath(p, paint); |
| } |
| |
| #include "SkDashPathEffect.h" |
| #include "SkPathMeasure.h" |
| |
| DEF_SIMPLE_GM(bug583299, canvas, 300, 300) { |
| const char* d="M60,60 A50,50 0 0 0 160,60 A50,50 0 0 0 60,60z"; |
| SkPaint p; |
| p.setStyle(SkPaint::kStroke_Style); |
| p.setStrokeWidth(100); |
| p.setAntiAlias(true); |
| p.setColor(0xFF008200); |
| p.setStrokeCap(SkPaint::kSquare_Cap); |
| SkPath path; |
| SkParsePath::FromSVGString(d, &path); |
| SkPathMeasure meas(path, false); |
| SkScalar length = meas.getLength(); |
| SkScalar intervals[] = {0, length }; |
| int intervalCount = (int) SK_ARRAY_COUNT(intervals); |
| p.setPathEffect(SkDashPathEffect::Make(intervals, intervalCount, 0)); |
| canvas->drawPath(path, p); |
| } |
