72 lines
No EOL
2 KiB
C#
72 lines
No EOL
2 KiB
C#
#region usings
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using OpenTK;
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#endregion
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namespace SM.Base.Drawing
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{
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/// <summary>
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/// Contains methods for using transformations right.
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/// </summary>
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public abstract class GenericTransformation
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{
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/// <summary>
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/// If true, ignores the transformation and sends <see cref="Matrix4.Identity" />, when requested.
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/// </summary>
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public bool Ignore = false;
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/// <summary>
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/// The last matrix that was used to calculate the real world matrix.
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/// </summary>
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public Matrix4 LastMaster { get; internal set; }
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/// <summary>
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/// The transformation in world space.
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/// </summary>
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public Matrix4 InWorldSpace => MergeMatrix(LastMaster);
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/// <summary>
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/// Contains the current model matrix.
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/// </summary>
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protected Matrix4 _modelMatrix { get; private set; }
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/// <summary>
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/// Contains the last frame the matrix was calculated.
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/// </summary>
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protected ulong _lastFrame { get; private set; }
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/// <summary>
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/// Returns the current model matrix.
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/// </summary>
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/// <returns></returns>
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public Matrix4 GetMatrix()
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{
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if (Ignore) return Matrix4.Identity;
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if (_lastFrame != SMRenderer.CurrentFrame)
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{
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_lastFrame = SMRenderer.CurrentFrame;
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_modelMatrix = RequestMatrix();
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}
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return _modelMatrix;
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}
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/// <summary>
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/// This combines the current matrix with the provided one.
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/// </summary>
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/// <param name="matrix"></param>
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/// <returns></returns>
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public Matrix4 MergeMatrix(Matrix4 matrix)
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{
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return GetMatrix() * matrix;
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}
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/// <summary>
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/// Calculates the current matrix.
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/// </summary>
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/// <returns>The current matrix.</returns>
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protected abstract Matrix4 RequestMatrix();
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}
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} |