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more vector4 methods

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git-svn-id: http://skia.googlecode.com/svn/trunk@515 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
reed@android.com 2010-03-01 01:10:10 +00:00
parent 940584d300
commit 85f9e1a0ad
1 changed files with 30 additions and 0 deletions
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30
experimental/SkMatrix44.h
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@ -45,6 +45,36 @@ static const SkMScalar SK_MScalar1 = 1;
struct SkVector4 {
SkScalar fData[4];
SkVector4() {
this->set(0, 0, 0, 1);
}
SkVector4(const SkVector4& src) {
memcpy(fData, src.fData, sizeof(fData));
}
SkVector4(SkScalar x, SkScalar y, SkScalar z, SkScalar w = SK_Scalar1) {
fData[0] = x;
fData[1] = y;
fData[2] = z;
fData[3] = w;
}
SkVector4& operator=(const SkVector4& src) {
memcpy(fData, src.fData, sizeof(fData));
return *this;
}
bool operator==(const SkVector4& v) {
return fData[0] == v.fData[0] && fData[1] == v.fData[1] &&
fData[2] == v.fData[2] && fData[3] == v.fData[3];
}
bool operator!=(const SkVector4& v) {
return !(*this == v);
}
bool equals(SkScalar x, SkScalar y, SkScalar z, SkScalar w = SK_Scalar1) {
return fData[0] == x && fData[1] == y &&
fData[2] == z && fData[3] == w;
}
void set(SkScalar x, SkScalar y, SkScalar z, SkScalar w = SK_Scalar1) {
fData[0] = x;
fData[1] = y;