private AxesPair GetSecondAxesPair(AxesPair axes)
{
switch (axes)
{
case AxesPair.XY:
return(AxesPair.XZ);
case AxesPair.YZ:
return(AxesPair.YX);
case AxesPair.ZX:
return(AxesPair.ZY);
case AxesPair.YX:
return(AxesPair.YZ);
case AxesPair.ZY:
return(AxesPair.ZX);
case AxesPair.XZ:
return(AxesPair.XY);
default:
throw new InvalidEnumArgumentException("Unsupported axes pair");
}
}
private void AxesPairToUI(AxesPair pair, out string uiAxis1, out string uiAxis2)
{
string axis1, axis2, axis3;
AxesPairToHLSL(pair, out axis1, out axis2, out axis3);
uiAxis1 = "Axis" + axis1[axis1.Length - 1];
uiAxis2 = "Axis" + axis2[axis2.Length - 1];
}
/// <summary>
/// Given two axes in (X, Y, Z), compute the third one so that the resulting basis is left handed
/// </summary>
/// <param name="axis1">hlsl value of first axis in pair</param>
/// <param name="axis2">hlsl value of second axis</param>
private string LeftHandedBasis(AxesPair axes, string axis1, string axis2)
{
if (axes <= AxesPair.ZX)
{
return("cross(" + axis1 + ", " + axis2 + ")");
}
else
{
return("cross(" + axis2 + ", " + axis1 + ")");
}
}
private void AxesPairToHLSL(AxesPair axes, out string axis1, out string axis2, out string axis3)
{
const string X = "axisX";
const string Y = "axisY";
const string Z = "axisZ";
switch (axes)
{
case AxesPair.XY:
axis1 = X;
axis2 = Y;
axis3 = Z;
break;
case AxesPair.XZ:
axis1 = X;
axis2 = Z;
axis3 = Y;
break;
case AxesPair.YX:
axis1 = Y;
axis2 = X;
axis3 = Z;
break;
case AxesPair.YZ:
axis1 = Y;
axis2 = Z;
axis3 = X;
break;
case AxesPair.ZX:
axis1 = Z;
axis2 = X;
axis3 = Y;
break;
case AxesPair.ZY:
axis1 = Z;
axis2 = Y;
axis3 = X;
break;
default:
throw new InvalidEnumArgumentException("Unsupported axes pair");
}
}
private void AxesPairToVector(AxesPair pair, out Vector3 axis1, out Vector3 axis2)
{
Vector3 X = Vector3.right, Y = Vector3.up, Z = Vector3.forward;
switch (pair)
{
case AxesPair.XY:
axis1 = X;
axis2 = Y;
break;
case AxesPair.XZ:
axis1 = X;
axis2 = Z;
break;
case AxesPair.YX:
axis1 = Y;
axis2 = X;
break;
case AxesPair.YZ:
axis1 = Y;
axis2 = Z;
break;
case AxesPair.ZX:
axis1 = Z;
axis2 = X;
break;
case AxesPair.ZY:
axis1 = Z;
axis2 = Y;
break;
default:
throw new InvalidEnumArgumentException("Unsupported axes pair");
}
}
