skia2/docs/examples/Point_Normalize.cpp
Mike Klein c0bd9f9fe5 rewrite includes to not need so much -Ifoo
Current strategy: everything from the top

Things to look at first are the manual changes:

   - added tools/rewrite_includes.py
   - removed -Idirectives from BUILD.gn
   - various compile.sh simplifications
   - tweak tools/embed_resources.py
   - update gn/find_headers.py to write paths from the top
   - update gn/gn_to_bp.py SkUserConfig.h layout
     so that #include "include/config/SkUserConfig.h" always
     gets the header we want.

No-Presubmit: true
Change-Id: I73a4b181654e0e38d229bc456c0d0854bae3363e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209706
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2019-04-24 16:27:11 +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 "tools/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.