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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 "SampleCode.h" | 8 #include "SampleCode.h" |
9 #include "SkAnimTimer.h" | 9 #include "SkAnimTimer.h" |
10 #include "SkView.h" | 10 #include "SkView.h" |
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23 const SkPaint* paint) { | 23 const SkPaint* paint) { |
24 canvas->drawAtlas(atlas, xform, tex, colors, count, SkXfermode::kModulate_Mo
de, cull, paint); | 24 canvas->drawAtlas(atlas, xform, tex, colors, count, SkXfermode::kModulate_Mo
de, cull, paint); |
25 } | 25 } |
26 | 26 |
27 static void draw_atlas_sim(SkCanvas* canvas, SkImage* atlas, const SkRSXform xfo
rm[], | 27 static void draw_atlas_sim(SkCanvas* canvas, SkImage* atlas, const SkRSXform xfo
rm[], |
28 const SkRect tex[], const SkColor colors[], int count
, const SkRect* cull, | 28 const SkRect tex[], const SkColor colors[], int count
, const SkRect* cull, |
29 const SkPaint* paint) { | 29 const SkPaint* paint) { |
30 for (int i = 0; i < count; ++i) { | 30 for (int i = 0; i < count; ++i) { |
31 SkMatrix matrix; | 31 SkMatrix matrix; |
32 matrix.setRSXform(xform[i]); | 32 matrix.setRSXform(xform[i]); |
33 | 33 |
34 canvas->save(); | 34 canvas->save(); |
35 canvas->concat(matrix); | 35 canvas->concat(matrix); |
36 canvas->drawImageRect(atlas, tex[i], tex[i].makeOffset(-tex[i].x(), -tex
[i].y()), paint, | 36 canvas->drawImageRect(atlas, tex[i], tex[i].makeOffset(-tex[i].x(), -tex
[i].y()), paint, |
37 SkCanvas::kFast_SrcRectConstraint); | 37 SkCanvas::kFast_SrcRectConstraint); |
38 canvas->restore(); | 38 canvas->restore(); |
39 } | 39 } |
40 } | 40 } |
41 | 41 |
42 static sk_sp<SkImage> make_atlas(int atlasSize, int cellSize) { | 42 static sk_sp<SkImage> make_atlas(int atlasSize, int cellSize) { |
43 SkImageInfo info = SkImageInfo::MakeN32Premul(atlasSize, atlasSize); | 43 SkImageInfo info = SkImageInfo::MakeN32Premul(atlasSize, atlasSize); |
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111 | 111 |
112 fAlpha += fDAlpha; | 112 fAlpha += fDAlpha; |
113 if (fAlpha > 1) { | 113 if (fAlpha > 1) { |
114 fAlpha = 1; | 114 fAlpha = 1; |
115 fDAlpha = -fDAlpha; | 115 fDAlpha = -fDAlpha; |
116 } else if (fAlpha < 0) { | 116 } else if (fAlpha < 0) { |
117 fAlpha = 0; | 117 fAlpha = 0; |
118 fDAlpha = -fDAlpha; | 118 fDAlpha = -fDAlpha; |
119 } | 119 } |
120 } | 120 } |
121 | 121 |
122 SkRSXform asRSXform() const { | 122 SkRSXform asRSXform() const { |
123 return SkRSXform::MakeFromRadians(fScale, fRadian, fCenter.x(), fCen
ter.y(), | 123 return SkRSXform::MakeFromRadians(fScale, fRadian, fCenter.x(), fCen
ter.y(), |
124 SkScalarHalf(kCellSize), SkScalarH
alf(kCellSize)); | 124 SkScalarHalf(kCellSize), SkScalarH
alf(kCellSize)); |
125 } | 125 } |
126 }; | 126 }; |
127 | 127 |
128 DrawAtlasProc fProc; | 128 DrawAtlasProc fProc; |
129 | 129 |
130 enum { | 130 enum { |
131 N = 256, | 131 N = 256, |
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144 SkRandom rand; | 144 SkRandom rand; |
145 fAtlas = make_atlas(kAtlasSize, kCellSize); | 145 fAtlas = make_atlas(kAtlasSize, kCellSize); |
146 const SkScalar kMaxSpeed = 5; | 146 const SkScalar kMaxSpeed = 5; |
147 const SkScalar cell = SkIntToScalar(kCellSize); | 147 const SkScalar cell = SkIntToScalar(kCellSize); |
148 int i = 0; | 148 int i = 0; |
149 for (int y = 0; y < kAtlasSize; y += kCellSize) { | 149 for (int y = 0; y < kAtlasSize; y += kCellSize) { |
150 for (int x = 0; x < kAtlasSize; x += kCellSize) { | 150 for (int x = 0; x < kAtlasSize; x += kCellSize) { |
151 const SkScalar sx = SkIntToScalar(x); | 151 const SkScalar sx = SkIntToScalar(x); |
152 const SkScalar sy = SkIntToScalar(y); | 152 const SkScalar sy = SkIntToScalar(y); |
153 fTex[i].setXYWH(sx, sy, cell, cell); | 153 fTex[i].setXYWH(sx, sy, cell, cell); |
154 | 154 |
155 fRec[i].fCenter.set(sx + cell/2, sy + 3*cell/4); | 155 fRec[i].fCenter.set(sx + cell/2, sy + 3*cell/4); |
156 fRec[i].fVelocity.fX = rand.nextSScalar1() * kMaxSpeed; | 156 fRec[i].fVelocity.fX = rand.nextSScalar1() * kMaxSpeed; |
157 fRec[i].fVelocity.fY = rand.nextSScalar1() * kMaxSpeed; | 157 fRec[i].fVelocity.fY = rand.nextSScalar1() * kMaxSpeed; |
158 fRec[i].fScale = 1; | 158 fRec[i].fScale = 1; |
159 fRec[i].fDScale = rand.nextSScalar1() / 16; | 159 fRec[i].fDScale = rand.nextSScalar1() / 16; |
160 fRec[i].fRadian = 0; | 160 fRec[i].fRadian = 0; |
161 fRec[i].fDRadian = rand.nextSScalar1() / 8; | 161 fRec[i].fDRadian = rand.nextSScalar1() / 8; |
162 fRec[i].fAlpha = rand.nextUScalar1(); | 162 fRec[i].fAlpha = rand.nextUScalar1(); |
163 fRec[i].fDAlpha = rand.nextSScalar1() / 10; | 163 fRec[i].fDAlpha = rand.nextSScalar1() / 10; |
164 i += 1; | 164 i += 1; |
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182 colors[i] = SkColorSetARGB((int)(fRec[i].fAlpha * 0xFF), 0xFF, 0
xFF, 0xFF); | 182 colors[i] = SkColorSetARGB((int)(fRec[i].fAlpha * 0xFF), 0xFF, 0
xFF, 0xFF); |
183 } | 183 } |
184 } | 184 } |
185 SkPaint paint; | 185 SkPaint paint; |
186 paint.setFilterQuality(kLow_SkFilterQuality); | 186 paint.setFilterQuality(kLow_SkFilterQuality); |
187 | 187 |
188 const SkRect cull = this->getBounds(); | 188 const SkRect cull = this->getBounds(); |
189 const SkColor* colorsPtr = fUseColors ? colors : nullptr; | 189 const SkColor* colorsPtr = fUseColors ? colors : nullptr; |
190 fProc(canvas, fAtlas.get(), xform, fTex, colorsPtr, N, &cull, &paint); | 190 fProc(canvas, fAtlas.get(), xform, fTex, colorsPtr, N, &cull, &paint); |
191 } | 191 } |
192 | 192 |
193 SkRect onGetBounds() override { | 193 SkRect onGetBounds() override { |
194 const SkScalar border = kMaxScale * kCellSize; | 194 const SkScalar border = kMaxScale * kCellSize; |
195 SkRect r = fBounds; | 195 SkRect r = fBounds; |
196 r.outset(border, border); | 196 r.outset(border, border); |
197 return r; | 197 return r; |
198 } | 198 } |
199 | 199 |
200 private: | 200 private: |
201 typedef SkDrawable INHERITED; | 201 typedef SkDrawable INHERITED; |
202 }; | 202 }; |
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245 #endif | 245 #endif |
246 | 246 |
247 private: | 247 private: |
248 typedef SampleView INHERITED; | 248 typedef SampleView INHERITED; |
249 }; | 249 }; |
250 | 250 |
251 ////////////////////////////////////////////////////////////////////////////// | 251 ////////////////////////////////////////////////////////////////////////////// |
252 | 252 |
253 DEF_SAMPLE( return new DrawAtlasView("DrawAtlas", draw_atlas); ) | 253 DEF_SAMPLE( return new DrawAtlasView("DrawAtlas", draw_atlas); ) |
254 DEF_SAMPLE( return new DrawAtlasView("DrawAtlasSim", draw_atlas_sim); ) | 254 DEF_SAMPLE( return new DrawAtlasView("DrawAtlasSim", draw_atlas_sim); ) |
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