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Side by Side Diff: gm/meshgradient.cpp

Issue 451723003: SkPatchGrid interface (after SkPatch/SkPicture rebase). (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Changed name to SkPatchGrid Created 6 years, 4 months ago
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1
2 /*
3 * Copyright 2014 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9 // This test only works with the GPU backend.
10
11 #include "gm.h"
12
13 #if SK_SUPPORT_GPU
14
15 #include "GrContext.h"
16 #include "GrTest.h"
17
18 #include "SkPatchGrid.h"
19
20 static void draw_control_points(SkCanvas* canvas, const SkPatch& patch) {
21 //draw control points
22 SkPaint paint;
23 SkPoint bottom[4];
24 patch.getBottomPoints(bottom);
25 SkPoint top[4];
26 patch.getTopPoints(top);
27 SkPoint left[4];
28 patch.getLeftPoints(left);
29 SkPoint right[4];
30 patch.getRightPoints(right);
31
32 paint.setColor(SK_ColorBLACK);
33 paint.setStrokeWidth(0.5);
34 SkPoint corners[4] = { bottom[0], bottom[3], top[0], top[3] };
35 canvas->drawPoints(SkCanvas::kLines_PointMode, 4, bottom, paint);
36 canvas->drawPoints(SkCanvas::kLines_PointMode, 2, bottom+1, paint);
37 canvas->drawPoints(SkCanvas::kLines_PointMode, 4, top, paint);
38 canvas->drawPoints(SkCanvas::kLines_PointMode, 4, left, paint);
39 canvas->drawPoints(SkCanvas::kLines_PointMode, 4, right, paint);
40
41 canvas->drawPoints(SkCanvas::kLines_PointMode, 2, top+1, paint);
42 canvas->drawPoints(SkCanvas::kLines_PointMode, 2, left+1, paint);
43 canvas->drawPoints(SkCanvas::kLines_PointMode, 2, right+1, paint);
44
45 paint.setStrokeWidth(2);
46
47 paint.setColor(SK_ColorRED);
48 canvas->drawPoints(SkCanvas::kPoints_PointMode, 4, corners, paint);
49
50 paint.setColor(SK_ColorBLUE);
51 canvas->drawPoints(SkCanvas::kPoints_PointMode, 2, bottom+1, paint);
52
53 paint.setColor(SK_ColorCYAN);
54 canvas->drawPoints(SkCanvas::kPoints_PointMode, 2, top+1, paint);
55
56 paint.setColor(SK_ColorYELLOW);
57 canvas->drawPoints(SkCanvas::kPoints_PointMode, 2, left+1, paint);
58
59 paint.setColor(SK_ColorGREEN);
60 canvas->drawPoints(SkCanvas::kPoints_PointMode, 2, right+1, paint);
61 }
62
63 namespace skiagm {
64 /**
65 * This GM draws a mesh gradient.
66 */
67 class SkMeshGradientGM : public GM {
68
69 public:
70 SkMeshGradientGM() {
71 this->setBGColor(0xFFFFFFFF);
72 }
73
74 protected:
75 virtual SkString onShortName() SK_OVERRIDE {
76 return SkString("mesh_gradient");
77 }
78
79 virtual SkISize onISize() SK_OVERRIDE {
80 return SkISize::Make(800, 800);
81 }
82
83 virtual uint32_t onGetFlags() const SK_OVERRIDE {
84 return kSkipTiled_Flag;
85 }
86
87 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
88
89 SkPaint paint;
90
91 SkPoint vertices[3][3] = {
92 {{50,50}, {150,50}, {250,50}},
93 {{50,150}, {160,140}, {250,150}},
94 {{50,250}, {170,460}, {250,250}}
95 };
96
97 SkColor cornerColors[3][3] = {
98 {SK_ColorBLUE, SK_ColorRED, SK_ColorBLUE},
99 {SK_ColorRED, SK_ColorBLUE, SK_ColorRED},
100 {SK_ColorBLUE, SK_ColorRED, SK_ColorBLUE}
101 };
102
103 SkPoint hrzCtrl[3][4] = {
104 {{75,80},{125,20},{175,50},{225,50}},
105 {{75,180},{125,120},{175,150},{225,150}},
106 {{75,250},{125,250},{175,250},{225,250}}
107 };
108
109 SkPoint vrtCtrl[4][3] = {
110 {{50,75},{150,75},{250,75}},
111 {{50,125},{150,125},{250,125}},
112 {{50,175},{150,175},{250,175}},
113 {{50,225},{150,225},{250,225}}
114 };
115
116 canvas->scale(5, 5);
117 SkPatchGrid grid(2, 2);
118 for (int i = 0; i<2; i++) {
egdaniel 2014/08/08 14:39:04 nit: add spaces around <
dandov 2014/08/08 18:31:45 Done.
119 for (int j = 0; j<2; j++) {
120 SkPoint points[12];
121
122 //set corners
123 points[SkPatch::kTopP0_CubicCtrlPts] = vertices[i][j];
124 points[SkPatch::kTopP3_CubicCtrlPts] = vertices[i][j + 1];
125 points[SkPatch::kBottomP0_CubicCtrlPts] = vertices[i + 1][j];
126 points[SkPatch::kBottomP3_CubicCtrlPts] = vertices[i + 1][j + 1] ;
127
128 points[SkPatch::kTopP1_CubicCtrlPts] = hrzCtrl[i][j * 2];
129 points[SkPatch::kTopP2_CubicCtrlPts] = hrzCtrl[i][j * 2 + 1];
130 points[SkPatch::kBottomP1_CubicCtrlPts] = hrzCtrl[i + 1][j * 2];
131 points[SkPatch::kBottomP2_CubicCtrlPts] = hrzCtrl[i + 1][j * 2 + 1];
132
133 points[SkPatch::kLeftP1_CubicCtrlPts] = vrtCtrl[i * 2][j];
134 points[SkPatch::kLeftP2_CubicCtrlPts] = vrtCtrl[i * 2 + 1][j];
135 points[SkPatch::kRightP1_CubicCtrlPts] = vrtCtrl[i * 2][j + 1];
136 points[SkPatch::kRightP2_CubicCtrlPts] = vrtCtrl[i * 2 + 1][j + 1];
137
138 SkColor colors[4];
139 colors[0] = cornerColors[i][j];
140 colors[1] = cornerColors[i][j + 1];
141 colors[3] = cornerColors[i + 1][j];
142 colors[2] = cornerColors[i + 1][j + 1];
143
144 grid.setPatch(j, i, points, colors);
145 }
146 }
147
148 grid.draw(canvas, paint);
149 SkISize dims = grid.getDimensions();
150 for (int y = 0; y < dims.height(); y++) {
151 for (int x = 0; x < dims.width(); x++) {
152 SkPatch patch;
153 grid.getPatch(x, y, &patch);
154 draw_control_points(canvas, patch);
155 }
156 }
157 }
158
159 private:
160 typedef GM INHERITED;
161 };
162
163 DEF_GM(return SkNEW(SkMeshGradientGM); )
164
165 }
166
167 #endif
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