skia2/docs/examples/IPoint_subtract_operator.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
1014 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=e626e26bf557857b824aa7d03f723e0f
REG_FIDDLE(IPoint_subtract_operator, 256, 64, false, 0) {
void draw(SkCanvas* canvas) {
auto draw_lines = [=](const SkIPoint pts[], size_t count, SkPaint& paint) -> void {
for (size_t i = 0; i < count - 1; ++i) {
SkPoint p0, p1;
p0.iset(pts[i]);
p1.iset(pts[i + 1]);
canvas->drawLine(p0, p1, paint);
}
};
SkIPoint points[] = { { 3, 1 }, { 4, 2 }, { 5, 1 }, { 7, 3 } };
SkPaint paint;
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
canvas->scale(30, 15);
draw_lines(points, SK_ARRAY_COUNT(points), paint);
points[1] += points[0] - points[3];
points[2] -= points[1] - points[0];
paint.setColor(SK_ColorRED);
draw_lines(points, SK_ARRAY_COUNT(points), paint);
}
} // END FIDDLE