/// <summary>
/// Accepts a vector in local coordinates and converts it to coordinates in another Drawable's space.
/// </summary>
/// <param name="input">A vector in local coordinates.</param>
/// <param name="other">The drawable in which space we want to transform the vector to.</param>
/// <returns>The vector in other's coordinates.</returns>
public Vector2i ToSpaceOfOtherObject(Vector2i input, PhysicalObject other)
{
if (other == this)
{
return(input);
}
return(input * Matrix * other.MatrixInverse);
}
/// <summary>
/// Gets a vector that is calculated using a percentile
/// value of the object size.
/// </summary>
/// <param name="percent">Percentile.</param>
/// <param name="other">Source object.</param>
/// <returns>A new vector.</returns>
public Vector2 PercentileVecByOtherObject(double percent, PhysicalObject other)
{
return(other.Size * (percent / 100));
}
private void CalculateMatrix()
{
PhysicalObject parent = null;
Matrix = Matrix.Identity;
DrawMatrix = Matrix.Identity;
Vector2 scaledSize = ScaledSize;
// - Check if we have a parent
if (Parent != null && Parent is PhysicalObject)
{
parent = Parent as PhysicalObject;
}
// - Apply rotation to the matrix
{
Vector2 rotationCenter = -ComputeAnchorPosition(scaledSize, RotationCustomCenter, RotationCenter);
var matrix = Matrix.CreateTranslation(rotationCenter.X, rotationCenter.Y, 0);
Matrix *= Matrix.CreateRotationZ(Rotation);
Matrix *= Matrix.CreateTranslation(-rotationCenter.X, -rotationCenter.Y, 0);
}
// - Create translation to requests point
{
Vector2 finalPosition = Position;
if (parent != null)
{
// - Apply origin point
finalPosition *= ComputeVectorDir(Anchor, Origin);
finalPosition += ComputeAnchorPosition(parent.ScaledSize, CustomOrigin, Origin);
}
// - Apply anchor point
finalPosition -= ComputeAnchorPosition(scaledSize, CustomAnchor, Anchor);
// - Calculate matrix
Matrix *= Matrix.CreateTranslation(finalPosition.X, finalPosition.Y, 0);
}
// - Scale with parent
if (parent != null && ScaleWithParent)
{
Vector2 scaleReference = parent.ScaleReference;
Vector2 parentScaledSize = parent.ScaledSize;
Vector2 scaleFactor = parentScaledSize / scaleReference;
Matrix *= Matrix.CreateScale(scaleFactor.X, scaleFactor.Y, 0);
}
// - If we have a parent do relative transformation
if (parent != null)
{
Matrix *= parent.Matrix;
}
// - Set object size
DrawMatrix *= Matrix.CreateScale(scaledSize.Width, scaledSize.Y, 0) * Matrix;
DrawMatrix *= ToRelativeFloat;
MatrixInverse = Matrix.Invert(Matrix);
TransformationChanged?.Invoke(this, EventArgs.Empty);
}
