skia2/docs/examples/convex_overstroke_linear_approx_curve.cpp
Hal Canary 6c8422c671 add more docs/examples from named fiddles.
ignore offscreen, srgb, and animated fiddles for now.

Change-Id: I923131b684865698e6cda138b004930e11f504d5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/263713
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
2020-01-14 19:22:26 +00:00

55 lines
1.3 KiB
C++

// Copyright 2020 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"
REG_FIDDLE(convex_overstroke_linear_approx_curve, 256, 256, false, 0) {
#include "math.h"
void draw(SkCanvas* canvas) {
const float SCALE = 1;
const int WIDTH = 150;
const float PI = 3.1415926;
canvas->scale(SCALE, SCALE);
canvas->translate(50, 50);
SkPoint p1 = SkPoint::Make(50, 50);
SkPoint p2 = SkPoint::Make(80, 50);
SkPoint points[10];
for (int i = 0; i < 10; i++) {
points[i] = SkPoint::Make(65 + 15 * cos(i * PI / 10), 50 - 15 * sin(i * PI / 10));
}
SkPath path;
path.moveTo(p1);
path.lineTo(p2);
for (int i = 0; i < 10; i++) {
path.lineTo(points[i]);
}
path.lineTo(p1);
// path.close();
SkPaint p;
p.setColor(SK_ColorRED);
p.setAntiAlias(true);
p.setStyle(SkPaint::kStroke_Style);
p.setStrokeWidth(WIDTH);
canvas->drawPath(path, p);
SkPath fillpath;
p.getFillPath(path, &fillpath);
SkPaint fillp;
fillp.setColor(SK_ColorBLACK);
fillp.setAntiAlias(true);
fillp.setStyle(SkPaint::kStroke_Style);
fillp.setStrokeWidth(1);
canvas->drawPath(fillpath, fillp);
}
} // END FIDDLE