skia2/docs/examples/Point_Normalize.cpp
Hal Canary d88c2e8e09 Docs: rename examples files to match names
Change-Id: I9a6b2780cfdd91cdd16d5a08eb9ba1214492cb7e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/201982
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
2019-03-19 18:49:22 +00:00

27 lines
1.1 KiB
C++

#if 0 // Disabled until updated to use current API.
// 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 "fiddle/examples.h"
// HASH=60a08f3ce75374fc815384616d114df7
REG_FIDDLE(Point_Normalize, 256, 256, false, 0) {
void draw(SkCanvas* canvas) {
SkPaint paint;
paint.setAntiAlias(true);
const SkPoint lines[][2] = { {{ 30, 110 }, { 190, 30 }},
{{ 30, 220 }, { 120, 140 }}};
for (auto line : lines) {
canvas->drawLine(line[0], line[1], paint);
SkVector vector = line[1] - line[0];
SkScalar priorLength = SkPoint::Normalize(&vector);
SkVector rotate90 = { -vector.fY, vector.fX };
rotate90 *= 10.f;
canvas->drawLine(line[0] - rotate90, line[0] + rotate90, paint);
canvas->drawLine(line[1] - rotate90, line[1] + rotate90, paint);
SkString length("length = ");
length.appendScalar(priorLength);
canvas->drawString(length, line[0].fX + 25, line[0].fY - 4, paint);
}
}
} // END FIDDLE
#endif // Disabled until updated to use current API.