private static MathVector getCameraDirection(MathTransform cameraTransform, MathUtility mathUtils)
{
double[] canonicalRay = { 0, 0, 1 };
MathVector normalVector = mathUtils.CreateVector(canonicalRay);
MathVector cameraDirection = normalVector.MultiplyTransform(cameraTransform);
return(cameraDirection);
}
public MathVector transformBack(MathVector alreadyTransformed)
{
// see http://help.solidworks.com/2012/English/api/sldworksapi/SolidWorks.Interop.sldworks~SolidWorks.Interop.sldworks.IMathTransform.html
// for documentation about what this horrific hack might mean
double[] mathTransform = new double[] { 0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0 };
MathVector newXAxis = mathUtils.CreateVector(cameraDirection.ArrayData).Normalise();
MathVector newYAxis = getRayFromNamedPoint("y-basis").Normalise();
MathVector newZAxis = getRayFromNamedPoint("z-basis").Normalise();
mathTransform[0] = newXAxis.ArrayData[0];
mathTransform[1] = newXAxis.ArrayData[1];
mathTransform[2] = newXAxis.ArrayData[2];
mathTransform[3] = newYAxis.ArrayData[0];
mathTransform[4] = newYAxis.ArrayData[1];
mathTransform[5] = newYAxis.ArrayData[2];
mathTransform[6] = newZAxis.ArrayData[0];
mathTransform[7] = newZAxis.ArrayData[1];
mathTransform[8] = newZAxis.ArrayData[2];
int translatex = 9, translatey = 10, translatez = 11;
mathTransform[translatex] = centreOfVision.ArrayData[0];
mathTransform[translatey] = centreOfVision.ArrayData[1];
mathTransform[translatez] = centreOfVision.ArrayData[2];
int scale = 12;
mathTransform[scale] = 1;
return(alreadyTransformed.MultiplyTransform(mathUtils.CreateTransform(mathTransform)));
}