| 391 | //////////////////////////////////////////////////////////////////////////////////// |
| 392 | |
| 393 | void SkMatrix::setSinCos(SkScalar sinV, SkScalar cosV, |
| 394 | SkScalar px, SkScalar py) { |
| 395 | const SkScalar oneMinusCosV = 1 - cosV; |
| 396 | |
| 397 | fMat[kMScaleX] = cosV; |
| 398 | fMat[kMSkewX] = -sinV; |
| 399 | fMat[kMTransX] = sdot(sinV, py, oneMinusCosV, px); |
| 400 | |
| 401 | fMat[kMSkewY] = sinV; |
| 402 | fMat[kMScaleY] = cosV; |
| 403 | fMat[kMTransY] = sdot(-sinV, px, oneMinusCosV, py); |
| 404 | |
| 405 | fMat[kMPersp0] = fMat[kMPersp1] = 0; |
| 406 | fMat[kMPersp2] = 1; |
| 407 | |
| 408 | this->setTypeMask(kUnknown_Mask | kOnlyPerspectiveValid_Mask); |
| 409 | } |
| 410 | |
| 411 | float SkMatrix::SkScalarSinCos(float radians, float* cosValue) { |
| 412 | float sinValue = sk_float_sin(radians); |