public override void Transform(LevelObject obj, Vector3 vec, Vector3 pivot)
{
var mat = obj.modelMatrix;
var scale = Matrix4.CreateScale(vec);
if (toolbox.transformSpace == TransformSpace.Global)
{
var transPivot = Matrix4.CreateTranslation(pivot);
mat = mat * transPivot.Inverted() * scale * transPivot;
}
else if (toolbox.transformSpace == TransformSpace.Local)
{
var transPivotOffset = Matrix4.CreateTranslation(obj.position - pivot);
var transObj = Matrix4.CreateTranslation(obj.position);
var rotObj = Matrix4.CreateFromQuaternion(obj.rotation);
mat =
mat *
// Move to origin and remove rotation
transObj.Inverted() * rotObj.Inverted() *
// Offset by the pivot, scale, and undo pivot offset
transPivotOffset * scale * transPivotOffset.Inverted() *
// Add back object rotation and position
rotObj * transObj;
}
obj.SetFromMatrix(mat);
}
public override void Transform(LevelObject obj, Vector3 vec, Vector3 pivot)
{
var mat = obj.modelMatrix;
if (toolbox.transformSpace == TransformSpace.Global)
{
var trans = Matrix4.CreateTranslation(vec);
mat = mat * trans;
}
else if (toolbox.transformSpace == TransformSpace.Local)
{
// Compensate for scale diminishing the strength of the translation
var trans = Matrix4.CreateTranslation(vec / obj.scale.LengthFast);
mat = trans * mat;
}
obj.SetFromMatrix(mat);
}