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skia2/gm/smallpaths.cpp
Mike Reed 06d7c9d798 Revert "Revert "use pathbuilder"" 
This reverts commit 43e3e91883.

Change-Id: I43f6c195f96b1601225801ffaa05a3133c236eba
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/313421
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Reed <reed@google.com>
2020-08-26 17:35:34 +00:00

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12 KiB
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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/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPathBuilder.h"
#include "include/core/SkRect.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTypes.h"
#include "include/pathops/SkPathOps.h"
#include <tuple>
namespace {
struct PathDY {
SkPath path;
SkScalar dy;
};
}
typedef PathDY (*MakePathProc)();
static PathDY make_triangle() {
constexpr int gCoord[] = {
10, 20, 15, 5, 30, 30
};
return {
SkPathBuilder().moveTo(SkIntToScalar(gCoord[0]), SkIntToScalar(gCoord[1]))
.lineTo(SkIntToScalar(gCoord[2]), SkIntToScalar(gCoord[3]))
.lineTo(SkIntToScalar(gCoord[4]), SkIntToScalar(gCoord[5]))
.close()
.offset(10, 0)
.detach(),
30
};
}
static PathDY make_rect() {
SkRect r = { SkIntToScalar(10), SkIntToScalar(10),
SkIntToScalar(30), SkIntToScalar(30) };
return {
SkPath::Rect(r.makeOffset(10, 0)),
30
};
}
static PathDY make_oval() {
SkRect r = { SkIntToScalar(10), SkIntToScalar(10),
SkIntToScalar(30), SkIntToScalar(30) };
return {
SkPath::Oval(r.makeOffset(10, 0)),
30
};
}
static PathDY make_star(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;
SkPathBuilder b;
b.moveTo(c, c - r);
for (int i = 1; i < n; i++) {
rad += drad;
b.lineTo(c + SkScalarCos(rad) * r, c + SkScalarSin(rad) * r);
}
b.close();
return { b.detach(), r * 2 * 6 / 5 };
}
static PathDY make_star_5() { return make_star(5); }
static PathDY make_star_13() { return make_star(13); }
static PathDY make_three_line() {
static SkScalar xOffset = 34.f;
static SkScalar yOffset = 50.f;
SkPathBuilder b;
b.moveTo(-32.5f + xOffset, 0.0f + yOffset);
b.lineTo(32.5f + xOffset, 0.0f + yOffset);
b.moveTo(-32.5f + xOffset, 19 + yOffset);
b.lineTo(32.5f + xOffset, 19 + yOffset);
b.moveTo(-32.5f + xOffset, -19 + yOffset);
b.lineTo(32.5f + xOffset, -19 + yOffset);
b.lineTo(-32.5f + xOffset, -19 + yOffset);
b.close();
return { b.detach(), 70 };
}
static PathDY make_arrow() {
static SkScalar xOffset = 34.f;
static SkScalar yOffset = 40.f;
SkPathBuilder b;
b.moveTo(-26.f + xOffset, 0.0f + yOffset);
b.lineTo(26.f + xOffset, 0.0f + yOffset);
b.moveTo(-28.f + xOffset, -2.4748745f + yOffset);
b.lineTo(0 + xOffset, 25.525126f + yOffset);
b.moveTo(-28.f + xOffset, 2.4748745f + yOffset);
b.lineTo(0 + xOffset, -25.525126f + yOffset);
b.lineTo(-28.f + xOffset, 2.4748745f + yOffset);
b.close();
return { b.detach(), 70 };
}
static PathDY make_curve() {
static SkScalar xOffset = -382.f;
static SkScalar yOffset = -50.f;
SkPathBuilder b;
b.moveTo(491 + xOffset, 56 + yOffset);
b.conicTo(435.93292f + xOffset, 56.000031f + yOffset,
382.61078f + xOffset, 69.752716f + yOffset,
0.9920463f);
return { b.detach(), 40 };
}
static PathDY make_battery() {
static SkScalar xOffset = 5.0f;
SkPathBuilder b;
b.moveTo(24.67f + xOffset, 0.33000004f);
b.lineTo(8.3299999f + xOffset, 0.33000004f);
b.lineTo(8.3299999f + xOffset, 5.3299999f);
b.lineTo(0.33000004f + xOffset, 5.3299999f);
b.lineTo(0.33000004f + xOffset, 50.669998f);
b.lineTo(32.669998f + xOffset, 50.669998f);
b.lineTo(32.669998f + xOffset, 5.3299999f);
b.lineTo(24.67f + xOffset, 5.3299999f);
b.lineTo(24.67f + xOffset, 0.33000004f);
b.close();
b.moveTo(25.727224f + xOffset, 12.886665f);
b.lineTo(10.907918f + xOffset, 12.886665f);
b.lineTo(7.5166659f + xOffset, 28.683645f);
b.lineTo(14.810181f + xOffset, 28.683645f);
b.lineTo(7.7024879f + xOffset, 46.135998f);
b.lineTo(28.049999f + xOffset, 25.136419f);
b.lineTo(16.854223f + xOffset, 25.136419f);
b.lineTo(25.727224f + xOffset, 12.886665f);
b.close();
return { b.detach(), 50 };
}
static PathDY make_battery2() {
static SkScalar xOffset = 225.625f;
SkPathBuilder b;
b.moveTo(32.669998f + xOffset, 9.8640003f);
b.lineTo(0.33000004f + xOffset, 9.8640003f);
b.lineTo(0.33000004f + xOffset, 50.669998f);
b.lineTo(32.669998f + xOffset, 50.669998f);
b.lineTo(32.669998f + xOffset, 9.8640003f);
b.close();
b.moveTo(10.907918f + xOffset, 12.886665f);
b.lineTo(25.727224f + xOffset, 12.886665f);
b.lineTo(16.854223f + xOffset, 25.136419f);
b.lineTo(28.049999f + xOffset, 25.136419f);
b.lineTo(7.7024879f + xOffset, 46.135998f);
b.lineTo(14.810181f + xOffset, 28.683645f);
b.lineTo(7.5166659f + xOffset, 28.683645f);
b.lineTo(10.907918f + xOffset, 12.886665f);
b.close();
return { b.detach(), 60 };
}
static PathDY make_ring() {
static SkScalar xOffset = 120;
static SkScalar yOffset = -270.f;
SkPathBuilder b;
b.setFillType(SkPathFillType::kWinding);
b.moveTo(xOffset + 144.859f, yOffset + 285.172f);
b.lineTo(xOffset + 144.859f, yOffset + 285.172f);
b.lineTo(xOffset + 144.859f, yOffset + 285.172f);
b.lineTo(xOffset + 143.132f, yOffset + 284.617f);
b.lineTo(xOffset + 144.859f, yOffset + 285.172f);
b.close();
b.moveTo(xOffset + 135.922f, yOffset + 286.844f);
b.lineTo(xOffset + 135.922f, yOffset + 286.844f);
b.lineTo(xOffset + 135.922f, yOffset + 286.844f);
b.lineTo(xOffset + 135.367f, yOffset + 288.571f);
b.lineTo(xOffset + 135.922f, yOffset + 286.844f);
b.close();
b.moveTo(xOffset + 135.922f, yOffset + 286.844f);
b.cubicTo(xOffset + 137.07f, yOffset + 287.219f, xOffset + 138.242f, yOffset + 287.086f,
xOffset + 139.242f, yOffset + 286.578f);
b.cubicTo(xOffset + 140.234f, yOffset + 286.078f, xOffset + 141.031f, yOffset + 285.203f,
xOffset + 141.406f, yOffset + 284.055f);
b.lineTo(xOffset + 144.859f, yOffset + 285.172f);
b.cubicTo(xOffset + 143.492f, yOffset + 289.375f, xOffset + 138.992f, yOffset + 291.656f,
xOffset + 134.797f, yOffset + 290.297f);
b.lineTo(xOffset + 135.922f, yOffset + 286.844f);
b.close();
b.moveTo(xOffset + 129.68f, yOffset + 280.242f);
b.lineTo(xOffset + 129.68f, yOffset + 280.242f);
b.lineTo(xOffset + 129.68f, yOffset + 280.242f);
b.lineTo(xOffset + 131.407f, yOffset + 280.804f);
b.lineTo(xOffset + 129.68f, yOffset + 280.242f);
b.close();
b.moveTo(xOffset + 133.133f, yOffset + 281.367f);
b.cubicTo(xOffset + 132.758f, yOffset + 282.508f, xOffset + 132.883f, yOffset + 283.687f,
xOffset + 133.391f, yOffset + 284.679f);
b.cubicTo(xOffset + 133.907f, yOffset + 285.679f, xOffset + 134.774f, yOffset + 286.468f,
xOffset + 135.922f, yOffset + 286.843f);
b.lineTo(xOffset + 134.797f, yOffset + 290.296f);
b.cubicTo(xOffset + 130.602f, yOffset + 288.929f, xOffset + 128.313f, yOffset + 284.437f,
xOffset + 129.68f, yOffset + 280.241f);
b.lineTo(xOffset + 133.133f, yOffset + 281.367f);
b.close();
b.moveTo(xOffset + 139.742f, yOffset + 275.117f);
b.lineTo(xOffset + 139.742f, yOffset + 275.117f);
b.lineTo(xOffset + 139.18f, yOffset + 276.844f);
b.lineTo(xOffset + 139.742f, yOffset + 275.117f);
b.close();
b.moveTo(xOffset + 138.609f, yOffset + 278.57f);
b.cubicTo(xOffset + 137.461f, yOffset + 278.203f, xOffset + 136.297f, yOffset + 278.328f,
xOffset + 135.297f, yOffset + 278.836f);
b.cubicTo(xOffset + 134.297f, yOffset + 279.344f, xOffset + 133.508f, yOffset + 280.219f,
xOffset + 133.133f, yOffset + 281.367f);
b.lineTo(xOffset + 129.68f, yOffset + 280.242f);
b.cubicTo(xOffset + 131.047f, yOffset + 276.039f, xOffset + 135.539f, yOffset + 273.758f,
xOffset + 139.742f, yOffset + 275.117f);
b.lineTo(xOffset + 138.609f, yOffset + 278.57f);
b.close();
b.moveTo(xOffset + 141.406f, yOffset + 284.055f);
b.cubicTo(xOffset + 141.773f, yOffset + 282.907f, xOffset + 141.648f, yOffset + 281.735f,
xOffset + 141.148f, yOffset + 280.735f);
b.cubicTo(xOffset + 140.625f, yOffset + 279.735f, xOffset + 139.757f, yOffset + 278.946f,
xOffset + 138.609f, yOffset + 278.571f);
b.lineTo(xOffset + 139.742f, yOffset + 275.118f);
b.cubicTo(xOffset + 143.937f, yOffset + 276.493f, xOffset + 146.219f, yOffset + 280.977f,
xOffset + 144.859f, yOffset + 285.173f);
b.lineTo(xOffset + 141.406f, yOffset + 284.055f);
b.close();
// uncomment to reveal PathOps bug, see https://bugs.chromium.org/p/skia/issues/detail?id=9732
// (void) Simplify(*path, path);
return { b.detach(), 15 };
}
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,
make_ring
};
constexpr SkScalar gWidths[] = {
2.0f,
3.0f,
4.0f,
5.0f,
6.0f,
7.0f,
7.0f,
14.0f,
0.0f,
0.0f,
0.0f
};
static_assert(SK_ARRAY_COUNT(gWidths) == SK_ARRAY_COUNT(gProcs));
constexpr SkScalar gMiters[] = {
2.0f,
3.0f,
3.0f,
3.0f,
4.0f,
4.0f,
4.0f,
4.0f,
4.0f,
4.0f,
4.0f,
};
static_assert(SK_ARRAY_COUNT(gMiters) == SK_ARRAY_COUNT(gProcs));
constexpr SkScalar gXTranslate[] = {
0.0f,
0.0f,
0.0f,
0.0f,
0.0f,
0.0f,
0.0f,
0.0f,
-220.625f,
0.0f,
0.0f,
};
static_assert(SK_ARRAY_COUNT(gXTranslate) == SK_ARRAY_COUNT(gProcs));
#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++) {
auto [path, dy] = gProcs[i]();
fPath[i] = path;
fDY[i] = dy;
}
}
SkString onShortName() override {
return SkString("smallpaths");
}
SkISize onISize() override {
return SkISize::Make(640, 512);
}
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(gXTranslate[i], 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(gXTranslate[i], 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(gXTranslate[i], 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(gXTranslate[i], fDY[i]);
}
}
private:
typedef skiagm::GM INHERITED;
};
DEF_GM(return new SmallPathsGM;)
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