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47 lines
2.4 KiB
47 lines
2.4 KiB
namespace Mapbox.Unity.MeshGeneration.Modifiers
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{
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using Mapbox.Unity.MeshGeneration.Data;
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public enum ModifierType
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{
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Preprocess,
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Postprocess
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}
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/// <summary>
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/// Mesh Data class and Mesh Modifier
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/// MeshData class is used to keep data required for a mesh.Mesh modifiers recieve raw feature data and a mesh modifier,
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/// generate their data and keep it inside MeshData. i.e.PolygonMeshModifier is responsible for triangulating the polygon,
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/// so it calculates the triangle indices using the vertices and save it into MeshData.Triangles list.There's no control
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/// over which field a mesh modifier fills or overrides but some of the basic mesh modifier goes like this;
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/// Polygon mesh modifier - Vertices and triangles
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/// Line Mesh modifier - Vertices, triangles and uvs
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/// UV modifier - uvs(only used with polygon mesh modifier)
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/// height modifier - vertices(adds new points), triangles(for side walls), uvs(for side walls)
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/// After running all mesh modifiers, mesh data is expected to have at least vertices and triangles set as
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/// they are the bare minimum to create a unity mesh object.
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/// So the main purpose of the mesh modifiers is to fill up the mesh data class but they aren't limited to that either.
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/// You can always create gameobjects and debug lines/spheres inside them for debugging purposes whenever you have a problem.
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/// MeshData class also has some extra fields inside for data transfer purposes(between modifiers). i.e.Edges list
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/// inside mesh data isn't used for mesh itself, but it's calculated by PolygonMeshModifier and used by HeightModifier
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/// so to avoid calculating it twice, we're keeping it in the mesh data object. You can also extend mesh data like this
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/// if you ever need to save data or share information between mesh modifiers.
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/// We fully expect developers to create their own mesh modifiers to customize the look of their world.It would probably
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/// take a little experience with mesh generation to be able to do this but it's the suggested way to create
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/// custom world objects, like blobly toonish buildings, or wobbly roads.
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/// </summary>
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public class MeshModifier : ModifierBase
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{
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public virtual ModifierType Type { get { return ModifierType.Preprocess; } }
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public virtual void Run(VectorFeatureUnity feature, MeshData md, float scale)
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{
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Run(feature, md);
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}
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public virtual void Run(VectorFeatureUnity feature, MeshData md, UnityTile tile = null)
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{
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}
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}
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} |