C++ (Cpp) make_tri_picture Examples

Example #1

File: multipicturedraw.cpp Project: aseprite/skia

// Create a Sierpinkski-like picture that starts with a top row with a picture
// that just contains a triangle. Subsequent rows take the prior row's picture,
// shrinks it and replicates it 3 times then draws and appropriate number of
// copies of it.
static sk_sp<SkPicture> make_sierpinski_picture() {
    sk_sp<SkPicture> pic(make_tri_picture());

    SkPictureRecorder recorder;
    SkRTreeFactory bbhFactory;

    SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(kPicWidth),
                                               SkIntToScalar(kPicHeight),
                                               &bbhFactory);

    constexpr int kNumLevels = 4;
    for (int i = 0; i < kNumLevels; ++i) {
        canvas->save();
            canvas->translate(kPicWidth/2 - (i+1) * (kTriSide/2.0f), 0.0f);
            for (int j = 0; j < i+1; ++j) {
                canvas->drawPicture(pic);
                canvas->translate(SkIntToScalar(kTriSide), 0);
            }
        canvas->restore();

        pic = make_sub_picture(pic.get());

        canvas->translate(0, 1.5f * kTriSide / kRoot3);
    }

    return recorder.finishRecordingAsPicture();
}

Example #2

File: multipicturedraw.cpp Project: Crawping/chromium_extract

// Create a Sierpinkski-like picture that starts with a top row with a picture
// that just contains a triangle. Subsequent rows take the prior row's picture,
// shrinks it and replicates it 3 times then draws and appropriate number of
// copies of it.
static const SkPicture* make_sierpinski_picture() {
    SkAutoTUnref<const SkPicture> pic(make_tri_picture());

    SkPictureRecorder recorder;
    SkRTreeFactory bbhFactory;

    SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(kPicWidth),
                                               SkIntToScalar(kPicHeight),
                                               &bbhFactory,
                                               SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag);

    static const int kNumLevels = 4;
    for (int i = 0; i < kNumLevels; ++i) {
        canvas->save();
            canvas->translate(kPicWidth/2 - (i+1) * (kTriSide/2.0f), 0.0f);
            for (int j = 0; j < i+1; ++j) {
                canvas->drawPicture(pic);
                canvas->translate(SkIntToScalar(kTriSide), 0);
            }
        canvas->restore();

        pic.reset(make_sub_picture(pic));

        canvas->translate(0, 1.5f * kTriSide / kRoot3);
    }

    return recorder.endRecording();
}