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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 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 "SkPatchGrid.h" | 8 #include "SkPatchGrid.h" |
9 #include "SkPatchUtils.h" | 9 #include "SkPatchUtils.h" |
10 | 10 |
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29 delete[] fVrtCtrlPts; | 29 delete[] fVrtCtrlPts; |
30 } | 30 } |
31 | 31 |
32 bool SkPatchGrid::setPatch(int x, int y, const SkPoint cubics[12], const SkColor
colors[4], | 32 bool SkPatchGrid::setPatch(int x, int y, const SkPoint cubics[12], const SkColor
colors[4], |
33 const SkPoint texCoords[4]) { | 33 const SkPoint texCoords[4]) { |
34 // Check for the passed paramaters to be within the range of the grid dimens
ions and a valid | 34 // Check for the passed paramaters to be within the range of the grid dimens
ions and a valid |
35 // pointer for the cubics' control points. | 35 // pointer for the cubics' control points. |
36 if (x < 0 || y < 0 || x > fCols - 1 || y > fRows - 1 || nullptr == cubics) { | 36 if (x < 0 || y < 0 || x > fCols - 1 || y > fRows - 1 || nullptr == cubics) { |
37 return false; | 37 return false; |
38 } | 38 } |
39 | 39 |
40 // setup corners and colors | 40 // setup corners and colors |
41 int cornerPos = y * (fCols + 1) + x; | 41 int cornerPos = y * (fCols + 1) + x; |
42 fCornerPts[cornerPos] = cubics[SkPatchUtils::kTopP0_CubicCtrlPts]; | 42 fCornerPts[cornerPos] = cubics[SkPatchUtils::kTopP0_CubicCtrlPts]; |
43 fCornerPts[cornerPos + 1] = cubics[SkPatchUtils::kTopP3_CubicCtrlPts]; | 43 fCornerPts[cornerPos + 1] = cubics[SkPatchUtils::kTopP3_CubicCtrlPts]; |
44 fCornerPts[cornerPos + (fCols + 1)] = cubics[SkPatchUtils::kBottomP0_CubicCt
rlPts]; | 44 fCornerPts[cornerPos + (fCols + 1)] = cubics[SkPatchUtils::kBottomP0_CubicCt
rlPts]; |
45 fCornerPts[cornerPos + (fCols + 1) + 1] = cubics[SkPatchUtils::kBottomP3_Cub
icCtrlPts]; | 45 fCornerPts[cornerPos + (fCols + 1) + 1] = cubics[SkPatchUtils::kBottomP3_Cub
icCtrlPts]; |
46 | 46 |
47 // set horizontal control points | 47 // set horizontal control points |
48 int hrzPos = y * (fCols * 2) + (x * 2); | 48 int hrzPos = y * (fCols * 2) + (x * 2); |
49 fHrzCtrlPts[hrzPos] = cubics[SkPatchUtils::kTopP1_CubicCtrlPts]; | 49 fHrzCtrlPts[hrzPos] = cubics[SkPatchUtils::kTopP1_CubicCtrlPts]; |
50 fHrzCtrlPts[hrzPos + 1] = cubics[SkPatchUtils::kTopP2_CubicCtrlPts]; | 50 fHrzCtrlPts[hrzPos + 1] = cubics[SkPatchUtils::kTopP2_CubicCtrlPts]; |
51 fHrzCtrlPts[hrzPos + (fCols * 2)] = cubics[SkPatchUtils::kBottomP1_CubicCtrl
Pts]; | 51 fHrzCtrlPts[hrzPos + (fCols * 2)] = cubics[SkPatchUtils::kBottomP1_CubicCtrl
Pts]; |
52 fHrzCtrlPts[hrzPos + (fCols * 2) + 1] = cubics[SkPatchUtils::kBottomP2_Cubic
CtrlPts]; | 52 fHrzCtrlPts[hrzPos + (fCols * 2) + 1] = cubics[SkPatchUtils::kBottomP2_Cubic
CtrlPts]; |
53 | 53 |
54 // set vertical control points | 54 // set vertical control points |
55 int vrtPos = (y*2) * (fCols + 1) + x; | 55 int vrtPos = (y*2) * (fCols + 1) + x; |
56 fVrtCtrlPts[vrtPos] = cubics[SkPatchUtils::kLeftP1_CubicCtrlPts]; | 56 fVrtCtrlPts[vrtPos] = cubics[SkPatchUtils::kLeftP1_CubicCtrlPts]; |
57 fVrtCtrlPts[vrtPos + 1] = cubics[SkPatchUtils::kRightP1_CubicCtrlPts]; | 57 fVrtCtrlPts[vrtPos + 1] = cubics[SkPatchUtils::kRightP1_CubicCtrlPts]; |
58 fVrtCtrlPts[vrtPos + (fCols + 1)] = cubics[SkPatchUtils::kLeftP2_CubicCtrlPt
s]; | 58 fVrtCtrlPts[vrtPos + (fCols + 1)] = cubics[SkPatchUtils::kLeftP2_CubicCtrlPt
s]; |
59 fVrtCtrlPts[vrtPos + (fCols + 1) + 1] = cubics[SkPatchUtils::kRightP2_CubicC
trlPts]; | 59 fVrtCtrlPts[vrtPos + (fCols + 1) + 1] = cubics[SkPatchUtils::kRightP2_CubicC
trlPts]; |
60 | 60 |
61 // set optional values (colors and texture coordinates) | 61 // set optional values (colors and texture coordinates) |
62 if ((fModeFlags & kColors_VertexType) && colors) { | 62 if ((fModeFlags & kColors_VertexType) && colors) { |
63 fCornerColors[cornerPos] = colors[0]; | 63 fCornerColors[cornerPos] = colors[0]; |
64 fCornerColors[cornerPos + 1] = colors[1]; | 64 fCornerColors[cornerPos + 1] = colors[1]; |
65 fCornerColors[cornerPos + (fCols + 1)] = colors[3]; | 65 fCornerColors[cornerPos + (fCols + 1)] = colors[3]; |
66 fCornerColors[cornerPos + (fCols + 1) + 1] = colors[2]; | 66 fCornerColors[cornerPos + (fCols + 1) + 1] = colors[2]; |
67 } | 67 } |
68 | 68 |
69 if ((fModeFlags & kTexs_VertexType) && texCoords) { | 69 if ((fModeFlags & kTexs_VertexType) && texCoords) { |
70 fTexCoords[cornerPos] = texCoords[0]; | 70 fTexCoords[cornerPos] = texCoords[0]; |
71 fTexCoords[cornerPos + 1] = texCoords[1]; | 71 fTexCoords[cornerPos + 1] = texCoords[1]; |
72 fTexCoords[cornerPos + (fCols + 1)] = texCoords[3]; | 72 fTexCoords[cornerPos + (fCols + 1)] = texCoords[3]; |
73 fTexCoords[cornerPos + (fCols + 1) + 1] = texCoords[2]; | 73 fTexCoords[cornerPos + (fCols + 1) + 1] = texCoords[2]; |
74 } | 74 } |
75 | 75 |
76 return true; | 76 return true; |
77 } | 77 } |
78 | 78 |
79 bool SkPatchGrid::getPatch(int x, int y, SkPoint cubics[12], SkColor colors[4], | 79 bool SkPatchGrid::getPatch(int x, int y, SkPoint cubics[12], SkColor colors[4], |
80 SkPoint texCoords[4]) const { | 80 SkPoint texCoords[4]) const { |
81 | 81 |
82 if (x < 0 || y < 0 || x > fCols - 1 || y > fRows - 1 || nullptr == cubics) { | 82 if (x < 0 || y < 0 || x > fCols - 1 || y > fRows - 1 || nullptr == cubics) { |
83 return false; | 83 return false; |
84 } | 84 } |
85 | 85 |
86 // set the patch by building the array of points and colors with the corresp
onding values. | 86 // set the patch by building the array of points and colors with the corresp
onding values. |
87 int cornerPos = y * (fCols + 1) + x; | 87 int cornerPos = y * (fCols + 1) + x; |
88 cubics[SkPatchUtils::kTopP0_CubicCtrlPts] = fCornerPts[cornerPos]; | 88 cubics[SkPatchUtils::kTopP0_CubicCtrlPts] = fCornerPts[cornerPos]; |
89 cubics[SkPatchUtils::kTopP3_CubicCtrlPts] = fCornerPts[cornerPos + 1]; | 89 cubics[SkPatchUtils::kTopP3_CubicCtrlPts] = fCornerPts[cornerPos + 1]; |
90 cubics[SkPatchUtils::kBottomP0_CubicCtrlPts] = fCornerPts[cornerPos + (fCols
+ 1)]; | 90 cubics[SkPatchUtils::kBottomP0_CubicCtrlPts] = fCornerPts[cornerPos + (fCols
+ 1)]; |
91 cubics[SkPatchUtils::kBottomP3_CubicCtrlPts] = fCornerPts[cornerPos + (fCols
+ 1) + 1]; | 91 cubics[SkPatchUtils::kBottomP3_CubicCtrlPts] = fCornerPts[cornerPos + (fCols
+ 1) + 1]; |
92 | 92 |
93 int hrzPos = y * (fCols * 2) + (x * 2); | 93 int hrzPos = y * (fCols * 2) + (x * 2); |
94 cubics[SkPatchUtils::kTopP1_CubicCtrlPts] = fHrzCtrlPts[hrzPos]; | 94 cubics[SkPatchUtils::kTopP1_CubicCtrlPts] = fHrzCtrlPts[hrzPos]; |
95 cubics[SkPatchUtils::kTopP2_CubicCtrlPts] = fHrzCtrlPts[hrzPos + 1]; | 95 cubics[SkPatchUtils::kTopP2_CubicCtrlPts] = fHrzCtrlPts[hrzPos + 1]; |
96 cubics[SkPatchUtils::kBottomP1_CubicCtrlPts] = fHrzCtrlPts[hrzPos + (fCols *
2)]; | 96 cubics[SkPatchUtils::kBottomP1_CubicCtrlPts] = fHrzCtrlPts[hrzPos + (fCols *
2)]; |
97 cubics[SkPatchUtils::kBottomP2_CubicCtrlPts] = fHrzCtrlPts[hrzPos + (fCols *
2) + 1]; | 97 cubics[SkPatchUtils::kBottomP2_CubicCtrlPts] = fHrzCtrlPts[hrzPos + (fCols *
2) + 1]; |
98 | 98 |
99 int vrtPos = (y*2) * (fCols + 1) + x; | 99 int vrtPos = (y*2) * (fCols + 1) + x; |
100 cubics[SkPatchUtils::kLeftP1_CubicCtrlPts] = fVrtCtrlPts[vrtPos]; | 100 cubics[SkPatchUtils::kLeftP1_CubicCtrlPts] = fVrtCtrlPts[vrtPos]; |
101 cubics[SkPatchUtils::kRightP1_CubicCtrlPts] = fVrtCtrlPts[vrtPos + 1]; | 101 cubics[SkPatchUtils::kRightP1_CubicCtrlPts] = fVrtCtrlPts[vrtPos + 1]; |
102 cubics[SkPatchUtils::kLeftP2_CubicCtrlPts] = fVrtCtrlPts[vrtPos + (fCols + 1
)]; | 102 cubics[SkPatchUtils::kLeftP2_CubicCtrlPts] = fVrtCtrlPts[vrtPos + (fCols + 1
)]; |
103 cubics[SkPatchUtils::kRightP2_CubicCtrlPts] = fVrtCtrlPts[vrtPos + (fCols +
1) + 1]; | 103 cubics[SkPatchUtils::kRightP2_CubicCtrlPts] = fVrtCtrlPts[vrtPos + (fCols +
1) + 1]; |
104 | 104 |
105 if ((fModeFlags & kColors_VertexType) && colors) { | 105 if ((fModeFlags & kColors_VertexType) && colors) { |
106 colors[0] = fCornerColors[cornerPos]; | 106 colors[0] = fCornerColors[cornerPos]; |
107 colors[1] = fCornerColors[cornerPos + 1]; | 107 colors[1] = fCornerColors[cornerPos + 1]; |
108 colors[3] = fCornerColors[cornerPos + (fCols + 1)]; | 108 colors[3] = fCornerColors[cornerPos + (fCols + 1)]; |
109 colors[2] = fCornerColors[cornerPos + (fCols + 1) + 1]; | 109 colors[2] = fCornerColors[cornerPos + (fCols + 1) + 1]; |
110 } | 110 } |
111 | 111 |
112 if ((fModeFlags & kTexs_VertexType) && texCoords) { | 112 if ((fModeFlags & kTexs_VertexType) && texCoords) { |
113 texCoords[0] = fTexCoords[cornerPos]; | 113 texCoords[0] = fTexCoords[cornerPos]; |
114 texCoords[1] = fTexCoords[cornerPos + 1]; | 114 texCoords[1] = fTexCoords[cornerPos + 1]; |
115 texCoords[3] = fTexCoords[cornerPos + (fCols + 1)]; | 115 texCoords[3] = fTexCoords[cornerPos + (fCols + 1)]; |
116 texCoords[2] = fTexCoords[cornerPos + (fCols + 1) + 1]; | 116 texCoords[2] = fTexCoords[cornerPos + (fCols + 1) + 1]; |
117 } | 117 } |
118 | 118 |
119 return true; | 119 return true; |
120 } | 120 } |
121 | 121 |
122 void SkPatchGrid::reset(int rows, int cols, VertexType flags, SkXfermode* xMode)
{ | 122 void SkPatchGrid::reset(int rows, int cols, VertexType flags, SkXfermode* xMode)
{ |
123 delete[] fCornerPts; | 123 delete[] fCornerPts; |
124 delete[] fCornerColors; | 124 delete[] fCornerColors; |
125 delete[] fTexCoords; | 125 delete[] fTexCoords; |
126 delete[] fHrzCtrlPts; | 126 delete[] fHrzCtrlPts; |
127 delete[] fVrtCtrlPts; | 127 delete[] fVrtCtrlPts; |
128 | 128 |
129 fCols = cols; | 129 fCols = cols; |
130 fRows = rows; | 130 fRows = rows; |
131 fModeFlags = flags; | 131 fModeFlags = flags; |
132 fXferMode = xMode; | 132 fXferMode = xMode; |
133 | 133 |
134 fCornerPts = new SkPoint[(fRows + 1) * (fCols + 1)]; | 134 fCornerPts = new SkPoint[(fRows + 1) * (fCols + 1)]; |
135 fHrzCtrlPts = new SkPoint[(fRows + 1) * fCols * 2]; | 135 fHrzCtrlPts = new SkPoint[(fRows + 1) * fCols * 2]; |
136 fVrtCtrlPts = new SkPoint[fRows * 2 * (fCols + 1)]; | 136 fVrtCtrlPts = new SkPoint[fRows * 2 * (fCols + 1)]; |
137 memset(fCornerPts, 0, (fRows + 1) * (fCols + 1) * sizeof(SkPoint)); | 137 memset(fCornerPts, 0, (fRows + 1) * (fCols + 1) * sizeof(SkPoint)); |
138 memset(fHrzCtrlPts, 0, (fRows + 1) * fCols * 2 * sizeof(SkPoint)); | 138 memset(fHrzCtrlPts, 0, (fRows + 1) * fCols * 2 * sizeof(SkPoint)); |
139 memset(fVrtCtrlPts, 0, fRows * 2 * (fCols + 1) * sizeof(SkPoint)); | 139 memset(fVrtCtrlPts, 0, fRows * 2 * (fCols + 1) * sizeof(SkPoint)); |
140 | 140 |
141 if (fModeFlags & kColors_VertexType) { | 141 if (fModeFlags & kColors_VertexType) { |
142 fCornerColors = new SkColor[(fRows + 1) * (fCols + 1)]; | 142 fCornerColors = new SkColor[(fRows + 1) * (fCols + 1)]; |
143 memset(fCornerColors, 0, (fRows + 1) * (fCols + 1) * sizeof(SkColor)); | 143 memset(fCornerColors, 0, (fRows + 1) * (fCols + 1) * sizeof(SkColor)); |
144 } | 144 } |
145 | 145 |
146 if (fModeFlags & kTexs_VertexType) { | 146 if (fModeFlags & kTexs_VertexType) { |
147 fTexCoords = new SkPoint[(fRows + 1) * (fCols + 1)]; | 147 fTexCoords = new SkPoint[(fRows + 1) * (fCols + 1)]; |
148 memset(fTexCoords, 0, (fRows + 1) * (fCols + 1) * sizeof(SkPoint)); | 148 memset(fTexCoords, 0, (fRows + 1) * (fCols + 1) * sizeof(SkPoint)); |
149 } | 149 } |
150 } | 150 } |
151 | 151 |
152 void SkPatchGrid::draw(SkCanvas* canvas, SkPaint& paint) { | 152 void SkPatchGrid::draw(SkCanvas* canvas, SkPaint& paint) { |
153 int* maxCols = new int[fCols]; | 153 int* maxCols = new int[fCols]; |
154 int* maxRows = new int[fRows]; | 154 int* maxRows = new int[fRows]; |
155 memset(maxCols, 0, fCols * sizeof(int)); | 155 memset(maxCols, 0, fCols * sizeof(int)); |
156 memset(maxRows, 0, fRows * sizeof(int)); | 156 memset(maxRows, 0, fRows * sizeof(int)); |
157 | 157 |
158 // Get the maximum level of detail per axis for each row and column | 158 // Get the maximum level of detail per axis for each row and column |
159 for (int y = 0; y < fRows; y++) { | 159 for (int y = 0; y < fRows; y++) { |
160 for (int x = 0; x < fCols; x++) { | 160 for (int x = 0; x < fCols; x++) { |
161 SkPoint cubics[12]; | 161 SkPoint cubics[12]; |
162 this->getPatch(x, y, cubics, nullptr, nullptr); | 162 this->getPatch(x, y, cubics, nullptr, nullptr); |
163 SkMatrix matrix = canvas->getTotalMatrix(); | 163 SkMatrix matrix = canvas->getTotalMatrix(); |
164 SkISize lod = SkPatchUtils::GetLevelOfDetail(cubics, &matrix); | 164 SkISize lod = SkPatchUtils::GetLevelOfDetail(cubics, &matrix); |
165 maxCols[x] = SkMax32(maxCols[x], lod.width()); | 165 maxCols[x] = SkMax32(maxCols[x], lod.width()); |
166 maxRows[y] = SkMax32(maxRows[y], lod.height()); | 166 maxRows[y] = SkMax32(maxRows[y], lod.height()); |
167 } | 167 } |
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180 maxCols[x], maxRows[y])) { | 180 maxCols[x], maxRows[y])) { |
181 canvas->drawVertices(SkCanvas::kTriangles_VertexMode, data.fVert
exCount, | 181 canvas->drawVertices(SkCanvas::kTriangles_VertexMode, data.fVert
exCount, |
182 data.fPoints, data.fTexCoords, data.fColors
, fXferMode, | 182 data.fPoints, data.fTexCoords, data.fColors
, fXferMode, |
183 data.fIndices, data.fIndexCount, paint); | 183 data.fIndices, data.fIndexCount, paint); |
184 } | 184 } |
185 } | 185 } |
186 } | 186 } |
187 delete[] maxCols; | 187 delete[] maxCols; |
188 delete[] maxRows; | 188 delete[] maxRows; |
189 } | 189 } |
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