skia2/docs/examples/Matrix_063.cpp
Mike Reed 2c38315710 hide/remove obsolete/tricky SkMatrix methods
Change-Id: Iee399b929e8ca1a7326a326a643539d05e333d81
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/260818
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Reed <reed@google.com>
2019-12-18 22:29:52 +00:00

16 lines
617 B
C++

// Copyright 2019 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "tools/fiddle/examples.h"
// HASH=e6ad0bd2999613d9e4758b661d45070c
REG_FIDDLE(Matrix_063, 256, 256, false, 3) {
void draw(SkCanvas* canvas) {
SkMatrix matrix;
SkPoint bitmapBounds[4], perspect[4] = {{50, 10}, {180, 40}, {236, 176}, {10, 206}};
SkRect::Make(source.bounds()).toQuad(bitmapBounds);
matrix.setPolyToPoly(bitmapBounds, perspect, 4);
matrix.postScale(1, 0.5f);
canvas->concat(matrix);
canvas->drawBitmap(source, 0, 0);
}
} // END FIDDLE