// transform input point pt1, (rotate "aX, aZ" and move to "center")
public static void Transform(Mesh3D model, Point3D center, double aX, double aZ)
{
var angleX = Math.PI * aX / 180;
var angleZ = Math.PI * aZ / 180;
var nVertNo = model.GetVertexNo();
for (var i = 0; i < nVertNo; i++)
{
var pt1 = model.GetPoint(i);
// rotate from z-axis
var x2 = pt1.X * Math.Cos(angleZ) + pt1.Z * Math.Sin(angleZ);
var y2 = pt1.Y;
var z2 = -pt1.X * Math.Sin(angleZ) + pt1.Z * Math.Cos(angleZ);
var x3 = center.X + x2 * Math.Cos(angleX) - y2 * Math.Sin(angleX);
var y3 = center.Y + x2 * Math.Sin(angleX) + y2 * Math.Cos(angleX);
var z3 = center.Z + z2;
model.SetPoint(i, x3, y3, z3);
}
}
// set the projection matrix
public void CalculateProjectionMatrix(Mesh3D mesh, double scaleFactor)
{
CalculateProjectionMatrix(mesh.m_xMin, mesh.m_xMax, mesh.m_yMin, mesh.m_yMax, mesh.m_zMin, mesh.m_zMax,
scaleFactor);
}
