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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "SkPath.h"
typedef SkScalar (*MakePathProc)(SkPath*);
static SkScalar make_triangle(SkPath* path) {
constexpr int gCoord[] = {
10, 20, 15, 5, 30, 30
};
path->moveTo(SkIntToScalar(gCoord[0]), SkIntToScalar(gCoord[1]));
path->lineTo(SkIntToScalar(gCoord[2]), SkIntToScalar(gCoord[3]));
path->lineTo(SkIntToScalar(gCoord[4]), SkIntToScalar(gCoord[5]));
path->close();
path->offset(SkIntToScalar(10), SkIntToScalar(0));
return SkIntToScalar(30);
}
static SkScalar make_rect(SkPath* path) {
SkRect r = { SkIntToScalar(10), SkIntToScalar(10),
SkIntToScalar(30), SkIntToScalar(30) };
path->addRect(r);
path->offset(SkIntToScalar(10), SkIntToScalar(0));
return SkIntToScalar(30);
}
static SkScalar make_oval(SkPath* path) {
SkRect r = { SkIntToScalar(10), SkIntToScalar(10),
SkIntToScalar(30), SkIntToScalar(30) };
path->addOval(r);
path->offset(SkIntToScalar(10), SkIntToScalar(0));
return SkIntToScalar(30);
}
static SkScalar make_star(SkPath* path, int n) {
const SkScalar c = SkIntToScalar(45);
const SkScalar r = SkIntToScalar(20);
SkScalar rad = -SK_ScalarPI / 2;
const SkScalar drad = (n >> 1) * SK_ScalarPI * 2 / n;
path->moveTo(c, c - r);
for (int i = 1; i < n; i++) {
rad += drad;
SkScalar cosV, sinV = SkScalarSinCos(rad, &cosV);
path->lineTo(c + cosV * r, c + sinV * r);
}
path->close();
return r * 2 * 6 / 5;
}
static SkScalar make_star_5(SkPath* path) { return make_star(path, 5); }
static SkScalar make_star_13(SkPath* path) { return make_star(path, 13); }
static SkScalar make_three_line(SkPath* path) {
static SkScalar xOffset = 34.f;
static SkScalar yOffset = 50.f;
path->moveTo(-32.5f + xOffset, 0.0f + yOffset);
path->lineTo(32.5f + xOffset, 0.0f + yOffset);
path->moveTo(-32.5f + xOffset, 19 + yOffset);
path->lineTo(32.5f + xOffset, 19 + yOffset);
path->moveTo(-32.5f + xOffset, -19 + yOffset);
path->lineTo(32.5f + xOffset, -19 + yOffset);
path->lineTo(-32.5f + xOffset, -19 + yOffset);
path->close();
return SkIntToScalar(70);
}
static SkScalar make_arrow(SkPath* path) {
static SkScalar xOffset = 34.f;
static SkScalar yOffset = 40.f;
path->moveTo(-26.f + xOffset, 0.0f + yOffset);
path->lineTo(26.f + xOffset, 0.0f + yOffset);
path->moveTo(-28.f + xOffset, -2.4748745f + yOffset);
path->lineTo(0 + xOffset, 25.525126f + yOffset);
path->moveTo(-28.f + xOffset, 2.4748745f + yOffset);
path->lineTo(0 + xOffset, -25.525126f + yOffset);
path->lineTo(-28.f + xOffset, 2.4748745f + yOffset);
path->close();
return SkIntToScalar(70);
}
static SkScalar make_curve(SkPath* path) {
static SkScalar xOffset = -382.f;
static SkScalar yOffset = -50.f;
path->moveTo(491 + xOffset, 56 + yOffset);
path->conicTo(435.93292f + xOffset, 56.000031f + yOffset,
382.61078f + xOffset, 69.752716f + yOffset,
0.9920463f);
return SkIntToScalar(40);
}
static SkScalar make_battery(SkPath* path) {
static SkScalar xOffset = 5.f;
path->moveTo(24.67f + xOffset, 0.33000004f);
path->lineTo(8.3299999f + xOffset, 0.33000004f);
path->lineTo(8.3299999f + xOffset, 5.3299999f);
path->lineTo(0.33000004f + xOffset, 5.3299999f);
path->lineTo(0.33000004f + xOffset, 50.669998f);
path->lineTo(32.669998f + xOffset, 50.669998f);
path->lineTo(32.669998f + xOffset, 5.3299999f);
path->lineTo(24.67f + xOffset, 5.3299999f);
path->lineTo(24.67f + xOffset, 0.33000004f);
path->close();
path->moveTo(25.727224f + xOffset, 12.886665f);
path->lineTo(10.907918f + xOffset, 12.886665f);
path->lineTo(7.5166659f + xOffset, 28.683645f);
path->lineTo(14.810181f + xOffset, 28.683645f);
path->lineTo(7.7024879f + xOffset, 46.135998f);
path->lineTo(28.049999f + xOffset, 25.136419f);
path->lineTo(16.854223f + xOffset, 25.136419f);
path->lineTo(25.727224f + xOffset, 12.886665f);
path->close();
return SkIntToScalar(50);
}
static SkScalar make_battery2(SkPath* path) {
static SkScalar xOffset = 5.f;
path->moveTo(32.669998f + xOffset, 9.8640003f);
path->lineTo(0.33000004f + xOffset, 9.8640003f);
path->lineTo(0.33000004f + xOffset, 50.669998f);
path->lineTo(32.669998f + xOffset, 50.669998f);
path->lineTo(32.669998f + xOffset, 9.8640003f);
path->close();
path->moveTo(10.907918f + xOffset, 12.886665f);
path->lineTo(25.727224f + xOffset, 12.886665f);
path->lineTo(16.854223f + xOffset, 25.136419f);
path->lineTo(28.049999f + xOffset, 25.136419f);
path->lineTo(7.7024879f + xOffset, 46.135998f);
path->lineTo(14.810181f + xOffset, 28.683645f);
path->lineTo(7.5166659f + xOffset, 28.683645f);
path->lineTo(10.907918f + xOffset, 12.886665f);
path->close();
return SkIntToScalar(70);
}
constexpr MakePathProc gProcs[] = {
make_triangle,
make_rect,
make_oval,
make_star_5,
make_star_13,
make_three_line,
make_arrow,
make_curve,
make_battery,
make_battery2
};
constexpr SkScalar gWidths[] = {
2.0f,
3.0f,
4.0f,
5.0f,
6.0f,
7.0f,
7.0f,
14.0f,
0.0f,
0.0f,
};
constexpr SkScalar gMiters[] = {
2.0f,
3.0f,
3.0f,
3.0f,
4.0f,
4.0f,
4.0f,
4.0f,
4.0f,
4.0f,
};
#define N SK_ARRAY_COUNT(gProcs)
// This GM tests out drawing small paths (i.e., for Ganesh, using the Distance
// Field path renderer) which are filled, stroked and filledAndStroked. In
// particular this ensures that any cache keys in use include the stroking
// parameters.
class SmallPathsGM : public skiagm::GM {
SkPath fPath[N];
SkScalar fDY[N];
protected:
void onOnceBeforeDraw() override {
for (size_t i = 0; i < N; i++) {
fDY[i] = gProcs[i](&fPath[i]);
}
}
SkString onShortName() override {
return SkString("smallpaths");
}
SkISize onISize() override {
return SkISize::Make(640, 480);
}
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
// first column: filled paths
canvas->save();
for (size_t i = 0; i < N; i++) {
canvas->drawPath(fPath[i], paint);
canvas->translate(SkIntToScalar(0), fDY[i]);
}
canvas->restore();
canvas->translate(SkIntToScalar(120), SkIntToScalar(0));
// second column: stroked paths
canvas->save();
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeCap(SkPaint::kButt_Cap);
for (size_t i = 0; i < N; i++) {
paint.setStrokeWidth(gWidths[i]);
paint.setStrokeMiter(gMiters[i]);
canvas->drawPath(fPath[i], paint);
canvas->translate(SkIntToScalar(0), fDY[i]);
}
canvas->restore();
canvas->translate(SkIntToScalar(120), SkIntToScalar(0));
// third column: stroked paths with different widths
canvas->save();
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeCap(SkPaint::kButt_Cap);
for (size_t i = 0; i < N; i++) {
paint.setStrokeWidth(gWidths[i] + 2.0f);
paint.setStrokeMiter(gMiters[i]);
canvas->drawPath(fPath[i], paint);
canvas->translate(SkIntToScalar(0), fDY[i]);
}
canvas->restore();
canvas->translate(SkIntToScalar(120), SkIntToScalar(0));
// fourth column: stroked and filled paths
paint.setStyle(SkPaint::kStrokeAndFill_Style);
paint.setStrokeCap(SkPaint::kButt_Cap);
for (size_t i = 0; i < N; i++) {
paint.setStrokeWidth(gWidths[i]);
paint.setStrokeMiter(gMiters[i]);
canvas->drawPath(fPath[i], paint);
canvas->translate(SkIntToScalar(0), fDY[i]);
}
}
private:
typedef skiagm::GM INHERITED;
};
DEF_GM(return new SmallPathsGM;)
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