float Cy = pts[2].y();
// precompute coefficients for derivative
- xCoeff[0] = Sk8f(2.0f*(Ax - 2*Bx + Cx));
- xCoeff[1] = Sk8f(2.0f*(Bx - Ax));
+ xCoeff[0] = Sk8f(2*(Ax - 2*Bx + Cx));
+ xCoeff[1] = Sk8f(2*(Bx - Ax));
- yCoeff[0] = Sk8f(2.0f*(Ay - 2*By + Cy));
- yCoeff[1] = Sk8f(2.0f*(By - Ay));
+ yCoeff[0] = Sk8f(2*(Ay - 2*By + Cy));
+ yCoeff[1] = Sk8f(2*(By - Ay));
}
break;
case kCubic_SegType:
float Dy = pts[3].y();
// precompute coefficients for derivative
- xCoeff[0] = Sk8f(3.0f*(-Ax + 3.0f*(Bx - Cx) + Dx));
- xCoeff[1] = Sk8f(3.0f*(2.0f*(Ax - 2.0f*Bx + Cx)));
- xCoeff[2] = Sk8f(3.0f*(-Ax + Bx));
+ xCoeff[0] = Sk8f(3*(-Ax + 3*(Bx - Cx) + Dx));
+ xCoeff[1] = Sk8f(6*(Ax - 2*Bx + Cx));
+ xCoeff[2] = Sk8f(3*(-Ax + Bx));
- yCoeff[0] = Sk8f(3.0f*(-Ay + 3.0f*(By - Cy) + Dy));
- yCoeff[1] = Sk8f(3.0f * -Ay + By + 2.0f*(Ay - 2.0f*By + Cy));
- yCoeff[2] = Sk8f(3.0f*(-Ay + By));
+ yCoeff[0] = Sk8f(3*(-Ay + 3*(By - Cy) + Dy));
+ yCoeff[1] = Sk8f(6*(Ay - 2*By + Cy));
+ yCoeff[2] = Sk8f(3*(-Ay + By));
}
break;
case kConic_SegType: