diff options
Diffstat (limited to 'samplecode/SampleCull.cpp')
| -rw-r--r-- | samplecode/SampleCull.cpp | 230 |
1 files changed, 0 insertions, 230 deletions
diff --git a/samplecode/SampleCull.cpp b/samplecode/SampleCull.cpp deleted file mode 100644 index ea1bb77..0000000 --- a/samplecode/SampleCull.cpp +++ /dev/null @@ -1,230 +0,0 @@ -#include "SampleCode.h" -#include "SkView.h" -#include "SkCanvas.h" -#include "SkCornerPathEffect.h" -#include "SkCullPoints.h" -#include "SkGradientShader.h" -#include "SkPath.h" -#include "SkRegion.h" -#include "SkShader.h" -#include "SkUtils.h" -#include "SkRandom.h" - -static void addbump(SkPath* path, const SkPoint pts[2], SkScalar bump) -{ - SkVector tang; - - tang.setLength(pts[1].fX - pts[0].fX, pts[1].fY - pts[0].fY, bump); - - path->lineTo(SkScalarHalf(pts[0].fX + pts[1].fX) - tang.fY, - SkScalarHalf(pts[0].fY + pts[1].fY) + tang.fX); - path->lineTo(pts[1]); -} - -static void subdivide(SkPath* path, SkScalar bump) -{ - SkPath::Iter iter(*path, false); - SkPoint pts[4]; - SkPath tmp; - - for (;;) - switch (iter.next(pts)) { - case SkPath::kMove_Verb: - tmp.moveTo(pts[0]); - break; - case SkPath::kLine_Verb: - addbump(&tmp, pts, bump); - bump = -bump; - break; - case SkPath::kDone_Verb: - goto FINISH; - default: - break; - } - -FINISH: - path->swap(tmp); -} - -static SkIPoint* getpts(const SkPath& path, int* count) -{ - SkPoint pts[4]; - int n = 1; - SkIPoint* array; - - { - SkPath::Iter iter(path, false); - for (;;) - switch (iter.next(pts)) { - case SkPath::kLine_Verb: - n += 1; - break; - case SkPath::kDone_Verb: - goto FINISHED; - default: - break; - } - } - -FINISHED: - array = new SkIPoint[n]; - n = 0; - - { - SkPath::Iter iter(path, false); - for (;;) - switch (iter.next(pts)) { - case SkPath::kMove_Verb: - array[n++].set(SkScalarRound(pts[0].fX), SkScalarRound(pts[0].fY)); - break; - case SkPath::kLine_Verb: - array[n++].set(SkScalarRound(pts[1].fX), SkScalarRound(pts[1].fY)); - break; - case SkPath::kDone_Verb: - goto FINISHED2; - default: - break; - } - } - -FINISHED2: - *count = n; - return array; -} - -static SkScalar nextScalarRange(SkRandom& rand, SkScalar min, SkScalar max) -{ - return min + SkScalarMul(rand.nextUScalar1(), max - min); -} - -class CullView : public SkView { -public: - CullView() - { - fClip.set(0, 0, SkIntToScalar(160), SkIntToScalar(160)); - - SkRandom rand; - - for (int i = 0; i < 50; i++) { - int x = nextScalarRange(rand, -fClip.width()*1, fClip.width()*2); - int y = nextScalarRange(rand, -fClip.height()*1, fClip.height()*2); - if (i == 0) - fPath.moveTo(x, y); - else - fPath.lineTo(x, y); - } - - SkScalar bump = fClip.width()/8; - subdivide(&fPath, bump); - subdivide(&fPath, bump); - subdivide(&fPath, bump); - fPoints = getpts(fPath, &fPtCount); - } - - virtual ~CullView() - { - delete[] fPoints; - } - -protected: - // overrides from SkEventSink - virtual bool onQuery(SkEvent* evt) - { - if (SampleCode::TitleQ(*evt)) - { - SampleCode::TitleR(evt, "Culling"); - return true; - } - return this->INHERITED::onQuery(evt); - } - - void drawBG(SkCanvas* canvas) - { - canvas->drawColor(0xFFDDDDDD); - - #if 0 - SkPaint paint; - - paint.setAntiAliasOn(true); - paint.setTextSize(SkIntToScalar(20)); - paint.setTypeface(SkTypeface::Create("serif", SkTypeface::kBoldItalic))->unref(); - - uint16_t text[20]; - - text[0] = 'H'; - text[1] = 'i'; - text[2] = ' '; - for (int i = 3; i < 20; i++) - text[i] = 0x3040 + i; - canvas->drawText16(text, 20, SkIntToScalar(20), SkIntToScalar(20), paint); - #endif - } - - virtual void onDraw(SkCanvas* canvas) - { - this->drawBG(canvas); - - SkAutoCanvasRestore ar(canvas, true); - - canvas->translate( SkScalarHalf(this->width() - fClip.width()), - SkScalarHalf(this->height() - fClip.height())); - - // canvas->scale(SK_Scalar1*3, SK_Scalar1*3, 0, 0); - - SkPaint paint; - - // paint.setAntiAliasOn(true); - paint.setStyle(SkPaint::kStroke_Style); - - canvas->drawRect(fClip, paint); - -#if 1 - paint.setColor(0xFF555555); - paint.setStrokeWidth(SkIntToScalar(2)); -// paint.setPathEffect(new SkCornerPathEffect(SkIntToScalar(30)))->unref(); - canvas->drawPath(fPath, paint); -// paint.setPathEffect(NULL); -#endif - - SkPath tmp; - SkIRect iclip; - fClip.round(&iclip); - - SkCullPointsPath cpp(iclip, &tmp); - - cpp.moveTo(fPoints[0].fX, fPoints[0].fY); - for (int i = 0; i < fPtCount; i++) - cpp.lineTo(fPoints[i].fX, fPoints[i].fY); - - paint.setColor(SK_ColorRED); - paint.setStrokeWidth(SkIntToScalar(3)); - paint.setStrokeJoin(SkPaint::kRound_Join); - canvas->drawPath(tmp, paint); - - this->inval(NULL); - } - - virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) - { - return this->INHERITED::onFindClickHandler(x, y); - } - - virtual bool onClick(Click* click) - { - return this->INHERITED::onClick(click); - } - -private: - SkRect fClip; - SkIPoint* fPoints; - SkPath fPath; - int fPtCount; - - typedef SkView INHERITED; -}; - -////////////////////////////////////////////////////////////////////////////// - -static SkView* MyFactory() { return new CullView; } -static SkViewRegister reg(MyFactory); - |