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'g' key toggles showgrid for PerlinPatch

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BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2269673002

TBR=

Review-Url: https://codereview.chromium.org/2269673002
This commit is contained in:
reed 2016-08-22 08:45:15 -07:00 committed by Commit bot
parent 7fd64e7e67
commit c0c6e1c5d1
1 changed files with 15 additions and 1 deletions
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16
samplecode/PerlinPatch.cpp
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@ -71,6 +71,8 @@ class PerlinPatchView : public SampleView {
SkScalar fTexY;
SkScalar fTexScale;
SkMatrix fInvMatrix;
bool fShowGrid = false;
public:
PerlinPatchView() : fXFreq(0.025f), fYFreq(0.025f), fSeed(0.0f),
fTexX(100.0), fTexY(50.0), fTexScale(1.0f) {
@ -114,6 +116,13 @@ protected:
SampleCode::TitleR(evt, "PerlinPatch");
return true;
}
SkUnichar uni;
if (SampleCode::CharQ(*evt, &uni)) {
switch (uni) {
case 'g': fShowGrid = !fShowGrid; this->inval(nullptr); return true;
default: break;
}
}
return this->INHERITED::onQuery(evt);
}
@ -147,7 +156,12 @@ protected:
fShaderCompose = SkShader::MakeComposeShader(fShader0, fShader1, nullptr);
paint.setShader(fShaderCompose);
canvas->drawPatch(fPts, nullptr, texCoords, xfer, paint);
const SkPoint* tex = texCoords;
if (fShowGrid) {
tex = nullptr;
}
canvas->drawPatch(fPts, nullptr, tex, xfer, paint);
draw_control_points(canvas, fPts);
}