2013-06-20 16:54:31 +00:00
|
|
|
/*
|
|
|
|
* Copyright 2013 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 "SkTArray.h"
|
|
|
|
|
2015-01-01 04:07:01 +00:00
|
|
|
class ConicPathsGM : public skiagm::GM {
|
2013-06-20 16:54:31 +00:00
|
|
|
protected:
|
|
|
|
|
2015-01-01 04:07:01 +00:00
|
|
|
SkString onShortName() SK_OVERRIDE {
|
2013-06-20 16:54:31 +00:00
|
|
|
return SkString("conicpaths");
|
|
|
|
}
|
|
|
|
|
2015-01-01 04:07:01 +00:00
|
|
|
SkISize onISize() SK_OVERRIDE {
|
2015-01-05 18:01:25 +00:00
|
|
|
return SkISize::Make(920, 960);
|
2013-06-20 16:54:31 +00:00
|
|
|
}
|
|
|
|
|
2015-01-01 04:07:01 +00:00
|
|
|
void onOnceBeforeDraw() SK_OVERRIDE {
|
2013-06-20 16:54:31 +00:00
|
|
|
{
|
2015-01-01 04:07:01 +00:00
|
|
|
const SkScalar w = SkScalarSqrt(2)/2;
|
2013-06-20 16:54:31 +00:00
|
|
|
SkPath* conicCirlce = &fPaths.push_back();
|
2015-01-05 18:01:25 +00:00
|
|
|
conicCirlce->moveTo(0, 0);
|
2015-01-01 04:07:01 +00:00
|
|
|
conicCirlce->conicTo(0, 50, 50, 50, w);
|
|
|
|
conicCirlce->rConicTo(50, 0, 50, -50, w);
|
|
|
|
conicCirlce->rConicTo(0, -50, -50, -50, w);
|
|
|
|
conicCirlce->rConicTo(-50, 0, -50, 50, w);
|
2013-06-20 16:54:31 +00:00
|
|
|
|
|
|
|
}
|
|
|
|
{
|
|
|
|
SkPath* hyperbola = &fPaths.push_back();
|
2015-01-05 18:01:25 +00:00
|
|
|
hyperbola->moveTo(0, 0);
|
2015-01-01 04:07:01 +00:00
|
|
|
hyperbola->conicTo(0, 100, 100, 100, 2);
|
2013-06-20 16:54:31 +00:00
|
|
|
}
|
|
|
|
{
|
|
|
|
SkPath* thinHyperbola = &fPaths.push_back();
|
2015-01-05 18:01:25 +00:00
|
|
|
thinHyperbola->moveTo(0, 0);
|
2015-01-01 04:07:01 +00:00
|
|
|
thinHyperbola->conicTo(100, 100, 5, 0, 2);
|
2013-06-20 16:54:31 +00:00
|
|
|
}
|
|
|
|
{
|
|
|
|
SkPath* veryThinHyperbola = &fPaths.push_back();
|
2015-01-05 18:01:25 +00:00
|
|
|
veryThinHyperbola->moveTo(0, 0);
|
2015-01-01 04:07:01 +00:00
|
|
|
veryThinHyperbola->conicTo(100, 100, 1, 0, 2);
|
2013-06-20 16:54:31 +00:00
|
|
|
}
|
|
|
|
{
|
|
|
|
SkPath* closedHyperbola = &fPaths.push_back();
|
2015-01-05 18:01:25 +00:00
|
|
|
closedHyperbola->moveTo(0, 0);
|
2015-01-01 04:07:01 +00:00
|
|
|
closedHyperbola->conicTo(100, 100, 0, 0, 2);
|
2013-06-20 16:54:31 +00:00
|
|
|
}
|
|
|
|
{
|
|
|
|
// using 1 as weight defaults to using quadTo
|
|
|
|
SkPath* nearParabola = &fPaths.push_back();
|
2015-01-05 18:01:25 +00:00
|
|
|
nearParabola->moveTo(0, 0);
|
2015-01-01 04:07:01 +00:00
|
|
|
nearParabola->conicTo(0, 100, 100, 100, 0.999f);
|
2013-06-20 16:54:31 +00:00
|
|
|
}
|
|
|
|
{
|
|
|
|
SkPath* thinEllipse = &fPaths.push_back();
|
2015-01-05 18:01:25 +00:00
|
|
|
thinEllipse->moveTo(0, 0);
|
2015-01-01 04:07:01 +00:00
|
|
|
thinEllipse->conicTo(100, 100, 5, 0, SK_ScalarHalf);
|
2013-06-20 16:54:31 +00:00
|
|
|
}
|
|
|
|
{
|
|
|
|
SkPath* veryThinEllipse = &fPaths.push_back();
|
2015-01-05 18:01:25 +00:00
|
|
|
veryThinEllipse->moveTo(0, 0);
|
2015-01-01 04:07:01 +00:00
|
|
|
veryThinEllipse->conicTo(100, 100, 1, 0, SK_ScalarHalf);
|
2013-06-20 16:54:31 +00:00
|
|
|
}
|
|
|
|
{
|
|
|
|
SkPath* closedEllipse = &fPaths.push_back();
|
2015-01-05 18:01:25 +00:00
|
|
|
closedEllipse->moveTo(0, 0);
|
2015-01-01 04:07:01 +00:00
|
|
|
closedEllipse->conicTo(100, 100, 0, 0, SK_ScalarHalf);
|
2013-06-20 16:54:31 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-01-01 04:07:01 +00:00
|
|
|
void onDraw(SkCanvas* canvas) SK_OVERRIDE {
|
|
|
|
const SkAlpha kAlphaValue[] = { 0xFF, 0x40 };
|
2013-06-20 16:54:31 +00:00
|
|
|
|
2015-01-01 04:07:01 +00:00
|
|
|
const SkScalar margin = 15;
|
|
|
|
canvas->translate(margin, margin);
|
2013-06-20 16:54:31 +00:00
|
|
|
|
2015-01-05 18:01:25 +00:00
|
|
|
SkPaint paint;
|
2013-06-20 16:54:31 +00:00
|
|
|
for (int p = 0; p < fPaths.count(); ++p) {
|
2015-01-05 18:01:25 +00:00
|
|
|
canvas->save();
|
2013-06-20 16:54:31 +00:00
|
|
|
for (size_t a = 0; a < SK_ARRAY_COUNT(kAlphaValue); ++a) {
|
2015-01-05 18:01:25 +00:00
|
|
|
paint.setARGB(kAlphaValue[a], 0, 0, 0);
|
2013-06-20 16:54:31 +00:00
|
|
|
for (int aa = 0; aa < 2; ++aa) {
|
2015-01-05 18:01:25 +00:00
|
|
|
paint.setAntiAlias(SkToBool(aa));
|
2013-06-20 16:54:31 +00:00
|
|
|
for (int fh = 0; fh < 2; ++fh) {
|
2015-01-05 18:01:25 +00:00
|
|
|
paint.setStyle(fh ? SkPaint::kStroke_Style : SkPaint::kFill_Style);
|
2013-06-20 16:54:31 +00:00
|
|
|
|
|
|
|
const SkRect& bounds = fPaths[p].getBounds();
|
|
|
|
canvas->save();
|
|
|
|
canvas->translate(-bounds.fLeft, -bounds.fTop);
|
|
|
|
canvas->drawPath(fPaths[p], paint);
|
|
|
|
canvas->restore();
|
|
|
|
|
2015-01-05 18:01:25 +00:00
|
|
|
canvas->translate(110, 0);
|
2013-06-20 16:54:31 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2015-01-05 18:01:25 +00:00
|
|
|
canvas->restore();
|
|
|
|
canvas->translate(0, 110);
|
2013-06-20 16:54:31 +00:00
|
|
|
}
|
|
|
|
canvas->restore();
|
|
|
|
}
|
|
|
|
|
|
|
|
private:
|
|
|
|
SkTArray<SkPath> fPaths;
|
2015-01-01 04:07:01 +00:00
|
|
|
typedef skiagm::GM INHERITED;
|
2013-06-20 16:54:31 +00:00
|
|
|
};
|
2015-01-01 04:07:01 +00:00
|
|
|
DEF_GM( return SkNEW(ConicPathsGM); )
|
2013-06-20 16:54:31 +00:00
|
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
|