skia2/docs/examples/IPoint_add_operator.cpp

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// 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=63f4cba971c6d8434595906f865b5a29
REG_FIDDLE(IPoint_add_operator, 256, 128, 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);
SkIPoint mod = {4, 1};
for (auto& point : points) {
point = point + mod;
mod.fX -= 1;
mod.fY += 1;
}
paint.setColor(SK_ColorRED);
draw_lines(points, SK_ARRAY_COUNT(points), paint);
}
} // END FIDDLE