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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
//
//
//
// Description: 3D scale transformation.
//
// See spec at http://avalon/medialayer/Specifications/Avalon3D%20API%20Spec.mht
//
//
namespace System.Windows.Media.Media3D
{
/// <summary>
/// 3D scale transform.
/// </summary>
public sealed partial class ScaleTransform3D : AffineTransform3D
{
//------------------------------------------------------
//
// Constructors
//
//------------------------------------------------------
#region Constructors
/// <summary>
/// Default constructor.
/// </summary>
public ScaleTransform3D() {}
/// <summary>
/// Constructor.
/// </summary>
public ScaleTransform3D(Vector3D scale)
{
ScaleX = scale.X;
ScaleY = scale.Y;
ScaleZ = scale.Z;
}
/// <summary>
/// Constructor.
/// </summary>
public ScaleTransform3D(double scaleX, double scaleY, double scaleZ)
{
ScaleX = scaleX;
ScaleY = scaleY;
ScaleZ = scaleZ;
}
/// <summary>
/// Constructor.
/// </summary>
public ScaleTransform3D(Vector3D scale, Point3D center)
{
ScaleX = scale.X;
ScaleY = scale.Y;
ScaleZ = scale.Z;
CenterX = center.X;
CenterY = center.Y;
CenterZ = center.Z;
}
/// <summary>
/// Constructor.
/// </summary>
public ScaleTransform3D(double scaleX, double scaleY, double scaleZ, double centerX, double centerY, double centerZ)
{
ScaleX = scaleX;
ScaleY = scaleY;
ScaleZ = scaleZ;
CenterX = centerX;
CenterY = centerY;
CenterZ = centerZ;
}
#endregion Constructors
//------------------------------------------------------
//
// Public Methods
//
//------------------------------------------------------
//------------------------------------------------------
//
// Public Properties
//
//------------------------------------------------------
#region Public Properties
/// <summary>
/// Retrieves matrix representation of this transform.
/// </summary>
public override Matrix3D Value
{
get
{
ReadPreamble();
Matrix3D matrix = new Matrix3D();
Append(ref matrix);
return matrix;
}
}
#endregion Public Properties
internal override void Append(ref Matrix3D matrix)
{
Vector3D scale = new Vector3D(_cachedScaleXValue, _cachedScaleYValue, _cachedScaleZValue);
if (_cachedCenterXValue == 0.0 && _cachedCenterYValue == 0.0 && _cachedCenterZValue == 0.0)
{
matrix.Scale(scale);
}
else
{
matrix.ScaleAt(scale, new Point3D(_cachedCenterXValue, _cachedCenterYValue, _cachedCenterZValue));
}
}
}
}
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