diff options
Diffstat (limited to 'gm')
-rw-r--r-- | gm/patch.cpp | 4 | ||||
-rw-r--r-- | gm/patchgrid.cpp | 165 |
2 files changed, 167 insertions, 2 deletions
diff --git a/gm/patch.cpp b/gm/patch.cpp index d4fe4ff1f3..2579993b82 100644 --- a/gm/patch.cpp +++ b/gm/patch.cpp @@ -87,9 +87,9 @@ protected: virtual uint32_t onGetFlags() const SK_OVERRIDE { return kSkipTiled_Flag; } - + virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { - + SkPaint paint; // The order of the colors and points is clockwise starting at upper-left corner. diff --git a/gm/patchgrid.cpp b/gm/patchgrid.cpp new file mode 100644 index 0000000000..79baf94253 --- /dev/null +++ b/gm/patchgrid.cpp @@ -0,0 +1,165 @@ + +/* + * Copyright 2014 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "gm.h" +#include "SkPatchGrid.h" + +static void draw_control_points(SkCanvas* canvas, const SkPoint cubics[12]) { + //draw control points + SkPaint paint; + SkPoint bottom[4]; + SkPatchUtils::getBottomCubic(cubics, bottom); + SkPoint top[4]; + SkPatchUtils::getTopCubic(cubics, top); + SkPoint left[4]; + SkPatchUtils::getLeftCubic(cubics, left); + SkPoint right[4]; + SkPatchUtils::getRightCubic(cubics, right); + + paint.setColor(SK_ColorBLACK); + paint.setStrokeWidth(0.5); + SkPoint corners[4] = { bottom[0], bottom[3], top[0], top[3] }; + canvas->drawPoints(SkCanvas::kLines_PointMode, 4, bottom, paint); + canvas->drawPoints(SkCanvas::kLines_PointMode, 2, bottom+1, paint); + canvas->drawPoints(SkCanvas::kLines_PointMode, 4, top, paint); + canvas->drawPoints(SkCanvas::kLines_PointMode, 4, left, paint); + canvas->drawPoints(SkCanvas::kLines_PointMode, 4, right, paint); + + canvas->drawPoints(SkCanvas::kLines_PointMode, 2, top+1, paint); + canvas->drawPoints(SkCanvas::kLines_PointMode, 2, left+1, paint); + canvas->drawPoints(SkCanvas::kLines_PointMode, 2, right+1, paint); + + paint.setStrokeWidth(2); + + paint.setColor(SK_ColorRED); + canvas->drawPoints(SkCanvas::kPoints_PointMode, 4, corners, paint); + + paint.setColor(SK_ColorBLUE); + canvas->drawPoints(SkCanvas::kPoints_PointMode, 2, bottom+1, paint); + + paint.setColor(SK_ColorCYAN); + canvas->drawPoints(SkCanvas::kPoints_PointMode, 2, top+1, paint); + + paint.setColor(SK_ColorYELLOW); + canvas->drawPoints(SkCanvas::kPoints_PointMode, 2, left+1, paint); + + paint.setColor(SK_ColorGREEN); + canvas->drawPoints(SkCanvas::kPoints_PointMode, 2, right+1, paint); +} + +namespace skiagm { +/** + * This GM draws a grid of patches, it only uses colors so it could be considered a mesh gradient. + */ +class SkPatchGridGM : public GM { + +public: + SkPatchGridGM() { + this->setBGColor(0xFFFFFFFF); + } + +protected: + virtual SkString onShortName() SK_OVERRIDE { + return SkString("patch_grid"); + } + + virtual SkISize onISize() SK_OVERRIDE { + return SkISize::Make(800, 800); + } + + virtual uint32_t onGetFlags() const SK_OVERRIDE { + return kSkipTiled_Flag; + } + + virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { + + SkPaint paint; + + SkPoint vertices[4][5] = { + {{50,50}, {150,50}, {250,50},{350,50},{450,50}}, + {{50,150}, {120,120}, {250,150},{350,150},{450,150}}, + {{50,250}, {150,250}, {250,250},{350,250},{450,250}}, + {{100,300}, {150,350}, {250,350},{350,350},{450,350}} + }; + + SkColor cornerColors[4][5] = { + {SK_ColorBLUE, SK_ColorRED, SK_ColorBLUE, SK_ColorRED, SK_ColorBLUE}, + {SK_ColorRED, SK_ColorBLUE, SK_ColorRED, SK_ColorBLUE, SK_ColorRED}, + {SK_ColorBLUE, SK_ColorRED, SK_ColorBLUE, SK_ColorRED, SK_ColorBLUE}, + {SK_ColorRED, SK_ColorBLUE, SK_ColorRED, SK_ColorBLUE, SK_ColorRED}, + }; + + SkPoint hrzCtrl[4][8] = { + {{75,30},{125,45},{175,70},{225,20},{275,50},{325,50},{375,5},{425,90}}, + {{75,150},{125,150},{175,150},{225,150},{275,150},{325,150},{375,150},{425,150}}, + {{75,250},{125,250},{175,250},{225,250},{275,200},{325,150},{375,250},{425,250}}, + {{75,350},{125,350},{175,350},{225,350},{275,350},{325,350},{375,350},{425,350}} + }; + + SkPoint vrtCtrl[6][5] = { + {{50,75},{150,75},{250,75},{350,75},{450,75}}, + {{50,125},{150,125},{250,125},{350,125},{450,125}}, + {{50,175},{150,175},{220,225},{350,175},{470,225}}, + {{50,225},{150,225},{220,175},{350,225},{470,155}}, + {{50,275},{150,275},{250,275},{350,275},{400,305}}, + {{50,325},{150,325},{250,325},{350,325},{450,325}} + }; + + static const int kRows = 3; + static const int kCols = 4; + + canvas->scale(3, 3); + SkPatchGrid grid(kRows, kCols, SkPatchGrid::kColors_VertexType, NULL); + for (int i = 0; i < kRows; i++) { + for (int j = 0; j < kCols; j++) { + SkPoint points[12]; + + //set corners + points[SkPatchUtils::kTopP0_CubicCtrlPts] = vertices[i][j]; + points[SkPatchUtils::kTopP3_CubicCtrlPts] = vertices[i][j + 1]; + points[SkPatchUtils::kBottomP0_CubicCtrlPts] = vertices[i + 1][j]; + points[SkPatchUtils::kBottomP3_CubicCtrlPts] = vertices[i + 1][j + 1]; + + points[SkPatchUtils::kTopP1_CubicCtrlPts] = hrzCtrl[i][j * 2]; + points[SkPatchUtils::kTopP2_CubicCtrlPts] = hrzCtrl[i][j * 2 + 1]; + points[SkPatchUtils::kBottomP1_CubicCtrlPts] = hrzCtrl[i + 1][j * 2]; + points[SkPatchUtils::kBottomP2_CubicCtrlPts] = hrzCtrl[i + 1][j * 2 + 1]; + + points[SkPatchUtils::kLeftP1_CubicCtrlPts] = vrtCtrl[i * 2][j]; + points[SkPatchUtils::kLeftP2_CubicCtrlPts] = vrtCtrl[i * 2 + 1][j]; + points[SkPatchUtils::kRightP1_CubicCtrlPts] = vrtCtrl[i * 2][j + 1]; + points[SkPatchUtils::kRightP2_CubicCtrlPts] = vrtCtrl[i * 2 + 1][j + 1]; + + SkColor colors[4]; + colors[0] = cornerColors[i][j]; + colors[1] = cornerColors[i][j + 1]; + colors[3] = cornerColors[i + 1][j]; + colors[2] = cornerColors[i + 1][j + 1]; + + grid.setPatch(j, i, points, colors, NULL); + } + } + + grid.draw(canvas, paint); + SkISize dims = grid.getDimensions(); + for (int y = 0; y < dims.height(); y++) { + for (int x = 0; x < dims.width(); x++) { + SkPoint cubics[12]; + grid.getPatch(x, y, cubics, NULL, NULL); + draw_control_points(canvas, cubics); + } + } + } + +private: + typedef GM INHERITED; +}; + +DEF_GM(return SkNEW(SkPatchGridGM); ) + +} |