void ValueTraits<VectorValue>::Lerp(const VectorValue& v0, const VectorValue& v1, float t,
VectorValue* result) {
SkASSERT(v0.size() == v1.size());
result->resize(v0.size());
for (size_t i = 0; i < v0.size(); ++i) {
ValueTraits<ScalarValue>::Lerp(v0[i], v1[i], t, &(*result)[i]);
}
}
SkColor ValueTraits<VectorValue>::As<SkColor>(const VectorValue& v) {
// best effort to turn this into a color
const auto r = v.size() > 0 ? v[0] : 0,
g = v.size() > 1 ? v[1] : 0,
b = v.size() > 2 ? v[2] : 0,
a = v.size() > 3 ? v[3] : 1;
return SkColorSetARGB(SkScalarRoundToInt(SkTPin(a, 0.0f, 1.0f) * 255),
SkScalarRoundToInt(SkTPin(r, 0.0f, 1.0f) * 255),
SkScalarRoundToInt(SkTPin(g, 0.0f, 1.0f) * 255),
SkScalarRoundToInt(SkTPin(b, 0.0f, 1.0f) * 255));
}
SkColor ValueTraits<VectorValue>::As<SkColor>(const VectorValue& v) {
// best effort to turn this into a color
const auto r = v.size() > 0 ? v[0] : 0,
g = v.size() > 1 ? v[1] : 0,
b = v.size() > 2 ? v[2] : 0,
a = v.size() > 3 ? v[3] : 1;
return SkColorSetARGB(SkTPin<SkScalar>(a, 0, 1) * 255,
SkTPin<SkScalar>(r, 0, 1) * 255,
SkTPin<SkScalar>(g, 0, 1) * 255,
SkTPin<SkScalar>(b, 0, 1) * 255);
}
SkPoint ValueTraits<VectorValue>::As<SkPoint>(const VectorValue& vec) {
// best effort to turn this into a point
const auto x = vec.size() > 0 ? vec[0] : 0,
y = vec.size() > 1 ? vec[1] : 0;
return SkPoint::Make(x, y);
}
bool ValueTraits<VectorValue>::CanLerp(const VectorValue& v1, const VectorValue& v2) {
return v1.size() == v2.size();
}
size_t ValueTraits<VectorValue>::Cardinality(const VectorValue& vec) {
return vec.size();
}