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1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "gm.h" | 8 #include "gm.h" |
9 #include "SkAnimTimer.h" | 9 #include "SkAnimTimer.h" |
10 #include "SkCanvas.h" | 10 #include "SkCanvas.h" |
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113 DEF_GM( return new AddArcMeasGM; ) | 113 DEF_GM( return new AddArcMeasGM; ) |
114 | 114 |
115 /////////////////////////////////////////////////// | 115 /////////////////////////////////////////////////// |
116 | 116 |
117 // Emphasize drawing a stroked oval (containing conics) and then scaling the res
ults up, | 117 // Emphasize drawing a stroked oval (containing conics) and then scaling the res
ults up, |
118 // to ensure that we compute the stroke taking the CTM into account | 118 // to ensure that we compute the stroke taking the CTM into account |
119 // | 119 // |
120 class StrokeCircleGM : public skiagm::GM { | 120 class StrokeCircleGM : public skiagm::GM { |
121 public: | 121 public: |
122 StrokeCircleGM() : fRotate(0) {} | 122 StrokeCircleGM() : fRotate(0) {} |
123 | 123 |
124 protected: | 124 protected: |
125 SkString onShortName() override { return SkString("strokecircle"); } | 125 SkString onShortName() override { return SkString("strokecircle"); } |
126 | 126 |
127 SkISize onISize() override { return SkISize::Make(520, 520); } | 127 SkISize onISize() override { return SkISize::Make(520, 520); } |
128 | 128 |
129 void onDraw(SkCanvas* canvas) override { | 129 void onDraw(SkCanvas* canvas) override { |
130 canvas->scale(20, 20); | 130 canvas->scale(20, 20); |
131 canvas->translate(13, 13); | 131 canvas->translate(13, 13); |
132 | 132 |
133 SkPaint paint; | 133 SkPaint paint; |
134 paint.setAntiAlias(true); | 134 paint.setAntiAlias(true); |
135 paint.setStyle(SkPaint::kStroke_Style); | 135 paint.setStyle(SkPaint::kStroke_Style); |
136 paint.setStrokeWidth(SK_Scalar1 / 2); | 136 paint.setStrokeWidth(SK_Scalar1 / 2); |
137 | 137 |
138 const SkScalar delta = paint.getStrokeWidth() * 3 / 2; | 138 const SkScalar delta = paint.getStrokeWidth() * 3 / 2; |
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169 SkScalar end, bool ccw) { | 169 SkScalar end, bool ccw) { |
170 SkRect bounds = { x - r, y - r, x + r, y + r }; | 170 SkRect bounds = { x - r, y - r, x + r, y + r }; |
171 SkScalar sweep = ccw ? end - start : start - end; | 171 SkScalar sweep = ccw ? end - start : start - end; |
172 path->arcTo(bounds, start, sweep, false); | 172 path->arcTo(bounds, start, sweep, false); |
173 } | 173 } |
174 | 174 |
175 // Lifted from canvas-arc-circumference-fill-diffs.html | 175 // Lifted from canvas-arc-circumference-fill-diffs.html |
176 class ManyArcsGM : public skiagm::GM { | 176 class ManyArcsGM : public skiagm::GM { |
177 public: | 177 public: |
178 ManyArcsGM() {} | 178 ManyArcsGM() {} |
179 | 179 |
180 protected: | 180 protected: |
181 SkString onShortName() override { return SkString("manyarcs"); } | 181 SkString onShortName() override { return SkString("manyarcs"); } |
182 | 182 |
183 SkISize onISize() override { return SkISize::Make(620, 330); } | 183 SkISize onISize() override { return SkISize::Make(620, 330); } |
184 | 184 |
185 void onDraw(SkCanvas* canvas) override { | 185 void onDraw(SkCanvas* canvas) override { |
186 SkPaint paint; | 186 SkPaint paint; |
187 paint.setAntiAlias(true); | 187 paint.setAntiAlias(true); |
188 paint.setStyle(SkPaint::kStroke_Style); | 188 paint.setStyle(SkPaint::kStroke_Style); |
189 | 189 |
190 canvas->translate(10, 10); | 190 canvas->translate(10, 10); |
191 | 191 |
192 // 20 angles. | 192 // 20 angles. |
193 SkScalar sweepAngles[] = { | 193 SkScalar sweepAngles[] = { |
194 -123.7f, -2.3f, -2, -1, -0.3f, -0.000001f, 0, 0.00000
1f, 0.3f, 0.7f, | 194 -123.7f, -2.3f, -2, -1, -0.3f, -0.000001f, 0, 0.00000
1f, 0.3f, 0.7f, |
195 1, 1.3f, 1.5f, 1.7f, 1.99999f, 2, 2.00001f, 2.3f, 4.3
f, 3934723942837.3f | 195 1, 1.3f, 1.5f, 1.7f, 1.99999f, 2, 2.00001f, 2.3f, 4.3
f, 3934723942837.3f |
196 }; | 196 }; |
197 for (size_t i = 0; i < SK_ARRAY_COUNT(sweepAngles); ++i) { | 197 for (size_t i = 0; i < SK_ARRAY_COUNT(sweepAngles); ++i) { |
198 sweepAngles[i] *= 180; | 198 sweepAngles[i] *= 180; |
199 } | 199 } |
200 | 200 |
201 SkScalar startAngles[] = { -1, -0.5f, 0, 0.5f }; | 201 SkScalar startAngles[] = { -1, -0.5f, 0, 0.5f }; |
202 for (size_t i = 0; i < SK_ARRAY_COUNT(startAngles); ++i) { | 202 for (size_t i = 0; i < SK_ARRAY_COUNT(startAngles); ++i) { |
203 startAngles[i] *= 180; | 203 startAngles[i] *= 180; |
204 } | 204 } |
205 | 205 |
206 bool anticlockwise = false; | 206 bool anticlockwise = false; |
207 SkScalar sign = 1; | 207 SkScalar sign = 1; |
208 for (size_t i = 0; i < SK_ARRAY_COUNT(startAngles) * 2; ++i) { | 208 for (size_t i = 0; i < SK_ARRAY_COUNT(startAngles) * 2; ++i) { |
209 if (i == SK_ARRAY_COUNT(startAngles)) { | 209 if (i == SK_ARRAY_COUNT(startAngles)) { |
210 anticlockwise = true; | 210 anticlockwise = true; |
211 sign = -1; | 211 sign = -1; |
212 } | 212 } |
213 SkScalar startAngle = startAngles[i % SK_ARRAY_COUNT(startAngles)] *
sign; | 213 SkScalar startAngle = startAngles[i % SK_ARRAY_COUNT(startAngles)] *
sign; |
214 canvas->save(); | 214 canvas->save(); |
215 for (size_t j = 0; j < SK_ARRAY_COUNT(sweepAngles); ++j) { | 215 for (size_t j = 0; j < SK_ARRAY_COUNT(sweepAngles); ++j) { |
216 SkPath path; | 216 SkPath path; |
217 path.moveTo(0, 2); | 217 path.moveTo(0, 2); |
218 html_canvas_arc(&path, 18, 15, 10, startAngle, startAngle + (swe
epAngles[j] * sign), | 218 html_canvas_arc(&path, 18, 15, 10, startAngle, startAngle + (swe
epAngles[j] * sign), |
219 anticlockwise); | 219 anticlockwise); |
220 path.lineTo(0, 28); | 220 path.lineTo(0, 28); |
221 canvas->drawPath(path, paint); | 221 canvas->drawPath(path, paint); |
222 canvas->translate(30, 0); | 222 canvas->translate(30, 0); |
223 } | 223 } |
224 canvas->restore(); | 224 canvas->restore(); |
225 canvas->translate(0, 40); | 225 canvas->translate(0, 40); |
226 } | 226 } |
227 } | 227 } |
228 | 228 |
229 private: | 229 private: |
230 typedef skiagm::GM INHERITED; | 230 typedef skiagm::GM INHERITED; |
231 }; | 231 }; |
232 DEF_GM( return new ManyArcsGM; ) | 232 DEF_GM( return new ManyArcsGM; ) |
233 | |
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