AuroraMiddleware/skia2
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Add cubic example and draw original path

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- Add cubic example
- Draw original path
- Also added dumpHex to stderr option on 'D'

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2106063004

Review-Url: https://codereview.chromium.org/2106063004
This commit is contained in:
hstern 2016-06-30 10:04:21 -07:00 committed by Commit bot
parent ee0c555797
commit e2463ed91e
1 changed files with 51 additions and 7 deletions
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58
samplecode/SamplePathOverstroke.cpp
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@ -9,6 +9,7 @@
#include "SkCanvas.h"
#include "SkPath.h"
#include <iostream>
#include <cmath>
#define PI SK_ScalarPI
@ -21,11 +22,13 @@ class OverstrokeView : public SampleView {
int fPathType; // super lazy enum
bool fClosePath;
bool fDrawFillPath;
bool fDumpHex;
OverstrokeView() {
fStroke = 5;
fPathType = 0;
fClosePath = false;
fDrawFillPath = false;
fDumpHex = false;
this->setBGColor(0xFFFFFFFF);
}
@ -47,7 +50,7 @@ class OverstrokeView : public SampleView {
this->inval(nullptr);
return true;
case 'x':
fPathType = (fPathType + 1) % 3;
fPathType = (fPathType + 1) % 4;
this->inval(nullptr);
return true;
case 'c':
@ -58,6 +61,10 @@ class OverstrokeView : public SampleView {
fDrawFillPath = !fDrawFillPath;
this->inval(nullptr);
return true;
case 'D':
fDumpHex = !fDumpHex;
this->inval(nullptr);
return true;
default:
break;
}
@ -79,6 +86,20 @@ class OverstrokeView : public SampleView {
return path;
}
SkPath cubicPath(SkPoint p1, SkPoint p2) {
SkASSERT(p1.y() == p2.y());
SkPath path;
path.moveTo(p1);
SkPoint p3 = SkPoint::Make((p1.x() + p2.x()) / 3.0f, p1.y() * 0.7f);
SkPoint p4 = SkPoint::Make(2.0f*(p1.x() + p2.x()) / 3.0f, p1.y() * 1.5f);
path.cubicTo(p3, p4, p2);
return path;
}
SkPath linSemicirclePath(SkPoint p1, SkPoint p2) {
SkASSERT(p1.y() == p2.y());
@ -123,11 +144,14 @@ class OverstrokeView : public SampleView {
path = quadPath(p1, p2);
break;
case 1:
path = linSemicirclePath(p1, p2);
path = cubicPath(p1, p2);
break;
case 2:
path = rectPath(p1);
break;
case 3:
path = linSemicirclePath(p1, p2);
break;
default:
path = quadPath(p1, p2);
break;
@ -145,17 +169,37 @@ class OverstrokeView : public SampleView {
canvas->drawPath(path, p);
if (fDumpHex) {
std::cerr << "path dumpHex" << std::endl;
path.dumpHex();
}
SkPaint hairp;
hairp.setColor(SK_ColorBLACK);
hairp.setAntiAlias(true);
hairp.setStyle(SkPaint::kStroke_Style);
if (fDrawFillPath) {
SkPath fillpath;
p.getFillPath(path, &fillpath);
SkPaint fillp;
fillp.setColor(SK_ColorBLACK);
fillp.setAntiAlias(true);
fillp.setStyle(SkPaint::kStroke_Style);
canvas->drawPath(fillpath, hairp);
canvas->drawPath(fillpath, fillp);
if (fDumpHex) {
std::cerr << "fillpath dumpHex" << std::endl;
fillpath.dumpHex();
}
}
if (fDumpHex) {
std::cerr << std::endl;
fDumpHex = false;
}
// draw original path with green hairline
hairp.setColor(SK_ColorGREEN);
canvas->drawPath(path, hairp);
}
private: