108 lines
No EOL
3 KiB
C#
108 lines
No EOL
3 KiB
C#
#region usings
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using System;
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using OpenTK.Graphics.OpenGL4;
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#endregion
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namespace SM.OGL.Mesh
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{
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/// <summary>
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/// Contains information for meshes
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/// </summary>
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public abstract class GenericMesh : GLObject
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{
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private bool _boundingBoxUpdated = false;
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public static int LastID { get; internal set; } = -1;
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/// <inheritdoc />
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protected override bool AutoCompile { get; set; } = true;
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/// <inheritdoc />
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public override ObjectLabelIdentifier TypeIdentifier { get; } = ObjectLabelIdentifier.VertexArray;
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/// <summary>
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/// The primitive type, that determinants how the mesh is drawn.
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/// <para>Default: Triangles</para>
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/// </summary>
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public virtual PrimitiveType PrimitiveType { get; protected set; } = PrimitiveType.Triangles;
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/// <summary>
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/// Contains the vertices for the mesh.
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/// </summary>
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public virtual VBO Vertex { get; protected set; }
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/// <summary>
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/// Contains the texture coords for the mesh.
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/// </summary>
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public virtual VBO UVs { get; protected set; }
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/// <summary>
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/// Contains the normals for the mesh.
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/// </summary>
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public virtual VBO Normals { get; protected set; }
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/// <summary>
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/// Represents the bounding box.
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/// </summary>
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public virtual BoundingBox BoundingBox { get; } = new BoundingBox();
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/// <summary>
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/// Connects the different buffer objects with ids.
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/// </summary>
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public MeshAttributeList Attributes { get; }
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/// <summary>
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/// Stores indices for a more performance friendly method to draw objects.
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/// </summary>
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public virtual int[] Indices { get; set; }
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/// <summary>
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/// Generates the AttribDataIndex
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/// </summary>
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protected GenericMesh()
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{
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Attributes = new MeshAttributeList()
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{
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{0, "vertex", Vertex},
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{1, "uv", UVs},
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{2, "normal", Normals}
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};
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}
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public void UpdateBoundingBox()
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{
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BoundingBox.Update(this);
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_boundingBoxUpdated = true;
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}
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public void Activate()
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{
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GL.BindVertexArray(ID);
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}
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/// <inheritdoc />
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public override void Compile()
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{
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_id = GL.GenVertexArray();
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GL.BindVertexArray(_id);
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if (Attributes == null || Attributes.Count == 0) throw new Exception("[Critical] The model requires attributes.");
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if (!_boundingBoxUpdated)
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UpdateBoundingBox();
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foreach (var kvp in Attributes)
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kvp.ConnectedVBO?.BindBuffer(kvp.Index);
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GL.BindVertexArray(0);
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}
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public override void Dispose()
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{
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GL.DeleteVertexArray(_id);
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base.Dispose();
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}
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}
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} |