static void test_patch(SkCanvas* canvas, const SkBitmap& bm, SkScalar scale) {
SkCubicBoundary cubic;
set_cubic(cubic.fPts + 0, 0, 0, 100, 0, scale);
set_cubic(cubic.fPts + 3, 100, 0, 100, 100, scale);
set_cubic(cubic.fPts + 6, 100, 100, 0, 100, -scale);
set_cubic(cubic.fPts + 9, 0, 100, 0, 0, 0);
SkBoundaryPatch patch;
patch.setBoundary(&cubic);
const int Rows = 16;
const int Cols = 16;
SkPoint pts[Rows * Cols];
patch.evalPatch(pts, Rows, Cols);
SkPaint paint;
paint.setAntiAlias(true);
paint.setFilterBitmap(true);
paint.setStrokeWidth(1);
paint.setStrokeCap(SkPaint::kRound_Cap);
canvas->translate(50, 50);
canvas->scale(3, 3);
SkMeshUtils::Draw(canvas, bm, Rows, Cols, pts, NULL, paint);
}
static void test_drag(SkCanvas* canvas, const SkBitmap& bm,
const SkPoint& p0, const SkPoint& p1) {
SkCubicBoundary cubic;
set_cubic(cubic.fPts + 0, 0, 0, 100, 0, 0);
set_cubic(cubic.fPts + 3, 100, 0, 100, 100, 0);
set_cubic(cubic.fPts + 6, 100, 100, 0, 100, 0);
set_cubic(cubic.fPts + 9, 0, 100, 0, 0, 0);
#if 0
cubic.fPts[1] += p1 - p0;
cubic.fPts[2] += p1 - p0;
#else
SkScalar dx = p1.fX - p0.fX;
if (dx > 0) dx = 0;
SkScalar dy = p1.fY - p0.fY;
if (dy > 0) dy = 0;
cubic.fPts[1].fY += dy;
cubic.fPts[2].fY += dy;
cubic.fPts[10].fX += dx;
cubic.fPts[11].fX += dx;
#endif
SkBoundaryPatch patch;
patch.setBoundary(&cubic);
const int Rows = 16;
const int Cols = 16;
SkPoint pts[Rows * Cols];
patch.evalPatch(pts, Rows, Cols);
SkPaint paint;
paint.setAntiAlias(true);
paint.setFilterBitmap(true);
paint.setStrokeWidth(1);
paint.setStrokeCap(SkPaint::kRound_Cap);
canvas->translate(50, 50);
canvas->scale(3, 3);
SkAutoCanvasRestore acr(canvas, true);
SkRect r = { 0, 0, 100, 100 };
canvas->clipRect(r);
SkMeshUtils::Draw(canvas, bm, Rows, Cols, pts, NULL, paint);
}
void test_patch(SkCanvas* canvas, const SkBitmap& bm, SkScalar scale) {
const float w = bm.width();
const float h = bm.height();
SkCubicBoundary cubic;
set_cubic(cubic.fPts + 0, 0, 0, w, 0, scale);
set_cubic(cubic.fPts + 3, w, 0, w, h, scale);
set_cubic(cubic.fPts + 6, w, h, 0, h, -scale);
set_cubic(cubic.fPts + 9, 0, h, 0, 0, scale);
SkBoundaryPatch patch;
patch.setBoundary(&cubic);
const int Rows = 16;
const int Cols = 16;
SkPoint pts[Rows * Cols];
patch.evalPatch(pts, Rows, Cols);
SkPaint paint;
paint.setAntiAlias(true);
paint.setFilterBitmap(true);
SkMeshUtils::Draw(canvas, bm, Rows, Cols, pts, NULL, paint);
}
