1 #if 0 // Disabled until updated to use current API.
2 // Copyright 2019 Google LLC.
3 // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
4 #include "tools/fiddle/examples.h"
5 // HASH=8b37f4ae7fec1756433c0f984175fb14
REG_FIDDLE(Matrix_isSimilarity, 256, 256, false, 0)6 REG_FIDDLE(Matrix_isSimilarity, 256, 256, false, 0) {
7 void draw(SkCanvas* canvas) {
8 SkPaint p;
9 p.setAntiAlias(true);
10 SkMatrix m;
11 int below = 175;
12 for (SkScalar sx : { -1, 1 } ) {
13 for (SkScalar sy : { -1, 1 } ) {
14 m.setAll(sx, 1, 128, 1, sy, 32, 0, 0, 1);
15 bool isSimilarity = m.isSimilarity();
16 SkString str;
17 str.printf("sx: %g sy: %g sim: %s", sx, sy, isSimilarity ? "true" : "false");
18 {
19 SkAutoCanvasRestore autoRestore(canvas, true);
20 canvas->concat(m);
21 canvas->drawString(str, 0, 0, p);
22 }
23 if (!isSimilarity) {
24 canvas->drawString(str, 40, below, p);
25 below += 20;
26 }
27 }
28 }
29 }
30 } // END FIDDLE
31 #endif // Disabled until updated to use current API.
32