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/*
* 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 "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkPath.h"
#include "SkRandom.h"
class HairCurvesView : public SampleView {
public:
HairCurvesView() {
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "HairCurves");
return true;
}
return this->INHERITED::onQuery(evt);
}
virtual void onDrawContent(SkCanvas* canvas) {
SkPaint paint;
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(0);
canvas->save();
canvas->scale(1000 * SK_Scalar1, 1000 * SK_Scalar1);
SkRandom rand;
SkRandom randW;
SkPath curves;
SkPath hulls;
SkPath ctrlPts;
for (int i = 0; i < 100; ++i) {
SkScalar pts[] = {
rand.nextUScalar1(), rand.nextUScalar1(),
rand.nextUScalar1(), rand.nextUScalar1(),
rand.nextUScalar1(), rand.nextUScalar1(),
rand.nextUScalar1(), rand.nextUScalar1()
};
curves.moveTo(pts[0], pts[1]);
curves.cubicTo(pts[2], pts[3],
pts[4], pts[5],
pts[6], pts[7]);
hulls.moveTo(pts[0], pts[1]);
hulls.lineTo(pts[2], pts[3]);
hulls.lineTo(pts[4], pts[5]);
hulls.lineTo(pts[6], pts[7]);
ctrlPts.addCircle(pts[0], pts[1], SK_Scalar1 / 200);
ctrlPts.addCircle(pts[2], pts[3], SK_Scalar1 / 200);
ctrlPts.addCircle(pts[4], pts[5], SK_Scalar1 / 200);
ctrlPts.addCircle(pts[6], pts[7], SK_Scalar1 / 200);
}
for (int i = 0; i < 100; ++i) {
SkScalar pts[] = {
rand.nextUScalar1(), rand.nextUScalar1(),
rand.nextUScalar1(), rand.nextUScalar1(),
rand.nextUScalar1(), rand.nextUScalar1(),
};
curves.moveTo(pts[0], pts[1]);
curves.quadTo(pts[2], pts[3],
pts[4], pts[5]);
hulls.moveTo(pts[0], pts[1]);
hulls.lineTo(pts[2], pts[3]);
hulls.lineTo(pts[4], pts[5]);
ctrlPts.addCircle(pts[0], pts[1], SK_Scalar1 / 200);
ctrlPts.addCircle(pts[2], pts[3], SK_Scalar1 / 200);
ctrlPts.addCircle(pts[4], pts[5], SK_Scalar1 / 200);
}
for (int i = 0; i < 100; ++i) {
SkScalar pts[] = {
rand.nextUScalar1(), rand.nextUScalar1(),
rand.nextUScalar1(), rand.nextUScalar1(),
rand.nextUScalar1(), rand.nextUScalar1(),
};
SkScalar weight = randW.nextUScalar1() * 2.0f;
curves.moveTo(pts[0], pts[1]);
curves.conicTo(pts[2], pts[3],
pts[4], pts[5],
weight);
hulls.moveTo(pts[0], pts[1]);
hulls.lineTo(pts[2], pts[3]);
hulls.lineTo(pts[4], pts[5]);
ctrlPts.addCircle(pts[0], pts[1], SK_Scalar1 / 200);
ctrlPts.addCircle(pts[2], pts[3], SK_Scalar1 / 200);
ctrlPts.addCircle(pts[4], pts[5], SK_Scalar1 / 200);
}
for (int i = 0; i < 100; ++i) {
SkScalar pts[] = {
rand.nextUScalar1(), rand.nextUScalar1(),
rand.nextUScalar1(), rand.nextUScalar1(),
};
curves.moveTo(pts[0], pts[1]);
curves.lineTo(pts[2], pts[3]);
ctrlPts.addCircle(pts[0], pts[1], SK_Scalar1 / 200);
ctrlPts.addCircle(pts[2], pts[3], SK_Scalar1 / 200);
}
paint.setColor(SK_ColorBLACK);
canvas->drawPath(curves, paint);
paint.setColor(SK_ColorRED);
//canvas->drawPath(hulls, paint);
paint.setStyle(SkPaint::kFill_Style);
paint.setColor(SK_ColorBLUE);
//canvas->drawPath(ctrlPts, paint);
canvas->restore();
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new HairCurvesView; }
static SkViewRegister reg(MyFactory);
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