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<?xml version="1.0" encoding="UTF-8" ?>
<class name="MeshDataTool" inherits="RefCounted" version="4.0">
<brief_description>
Helper tool to access and edit [Mesh] data.
</brief_description>
<description>
MeshDataTool provides access to individual vertices in a [Mesh]. It allows users to read and edit vertex data of meshes. It also creates an array of faces and edges.
To use MeshDataTool, load a mesh with [method create_from_surface]. When you are finished editing the data commit the data to a mesh with [method commit_to_surface].
Below is an example of how MeshDataTool may be used.
[codeblocks]
[gdscript]
var mesh = ArrayMesh.new()
mesh.add_surface_from_arrays(Mesh.PRIMITIVE_TRIANGLES, BoxMesh.new().get_mesh_arrays())
var mdt = MeshDataTool.new()
mdt.create_from_surface(mesh, 0)
for i in range(mdt.get_vertex_count()):
var vertex = mdt.get_vertex(i)
# In this example we extend the mesh by one unit, which results in separated faces as it is flat shaded.
vertex += mdt.get_vertex_normal(i)
# Save your change.
mdt.set_vertex(i, vertex)
mesh.surface_remove(0)
mdt.commit_to_surface(mesh)
var mi = MeshInstance.new()
mi.mesh = mesh
add_child(mi)
[/gdscript]
[csharp]
var mesh = new ArrayMesh();
mesh.AddSurfaceFromArrays(Mesh.PrimitiveType.Triangles, new BoxMesh().GetMeshArrays());
var mdt = new MeshDataTool();
mdt.CreateFromSurface(mesh, 0);
for (var i = 0; i < mdt.GetVertexCount(); i++)
{
Vector3 vertex = mdt.GetVertex(i);
// In this example we extend the mesh by one unit, which results in separated faces as it is flat shaded.
vertex += mdt.GetVertexNormal(i);
// Save your change.
mdt.SetVertex(i, vertex);
}
mesh.SurfaceRemove(0);
mdt.CommitToSurface(mesh);
var mi = new MeshInstance();
mi.Mesh = mesh;
AddChild(mi);
[/csharp]
[/codeblocks]
See also [ArrayMesh], [ImmediateMesh] and [SurfaceTool] for procedural geometry generation.
[b]Note:[/b] Godot uses clockwise [url=https://learnopengl.com/Advanced-OpenGL/Face-culling]winding order[/url] for front faces of triangle primitive modes.
</description>
<tutorials>
</tutorials>
<methods>
<method name="clear">
<return type="void" />
<description>
Clears all data currently in MeshDataTool.
</description>
</method>
<method name="commit_to_surface">
<return type="int" enum="Error" />
<argument index="0" name="mesh" type="ArrayMesh" />
<description>
Adds a new surface to specified [Mesh] with edited data.
</description>
</method>
<method name="create_from_surface">
<return type="int" enum="Error" />
<argument index="0" name="mesh" type="ArrayMesh" />
<argument index="1" name="surface" type="int" />
<description>
Uses specified surface of given [Mesh] to populate data for MeshDataTool.
Requires [Mesh] with primitive type [constant Mesh.PRIMITIVE_TRIANGLES].
</description>
</method>
<method name="get_edge_count" qualifiers="const">
<return type="int" />
<description>
Returns the number of edges in this [Mesh].
</description>
</method>
<method name="get_edge_faces" qualifiers="const">
<return type="PackedInt32Array" />
<argument index="0" name="idx" type="int" />
<description>
Returns array of faces that touch given edge.
</description>
</method>
<method name="get_edge_meta" qualifiers="const">
<return type="Variant" />
<argument index="0" name="idx" type="int" />
<description>
Returns meta information assigned to given edge.
</description>
</method>
<method name="get_edge_vertex" qualifiers="const">
<return type="int" />
<argument index="0" name="idx" type="int" />
<argument index="1" name="vertex" type="int" />
<description>
Returns index of specified vertex connected to given edge.
Vertex argument can only be 0 or 1 because edges are comprised of two vertices.
</description>
</method>
<method name="get_face_count" qualifiers="const">
<return type="int" />
<description>
Returns the number of faces in this [Mesh].
</description>
</method>
<method name="get_face_edge" qualifiers="const">
<return type="int" />
<argument index="0" name="idx" type="int" />
<argument index="1" name="edge" type="int" />
<description>
Returns specified edge associated with given face.
Edge argument must be either 0, 1, or 2 because a face only has three edges.
</description>
</method>
<method name="get_face_meta" qualifiers="const">
<return type="Variant" />
<argument index="0" name="idx" type="int" />
<description>
Returns the metadata associated with the given face.
</description>
</method>
<method name="get_face_normal" qualifiers="const">
<return type="Vector3" />
<argument index="0" name="idx" type="int" />
<description>
Calculates and returns the face normal of the given face.
</description>
</method>
<method name="get_face_vertex" qualifiers="const">
<return type="int" />
<argument index="0" name="idx" type="int" />
<argument index="1" name="vertex" type="int" />
<description>
Returns the specified vertex of the given face.
Vertex argument must be either 0, 1, or 2 because faces contain three vertices.
</description>
</method>
<method name="get_format" qualifiers="const">
<return type="int" />
<description>
Returns the [Mesh]'s format. Format is an integer made up of [Mesh] format flags combined together. For example, a mesh containing both vertices and normals would return a format of [code]3[/code] because [constant Mesh.ARRAY_FORMAT_VERTEX] is [code]1[/code] and [constant Mesh.ARRAY_FORMAT_NORMAL] is [code]2[/code].
See [enum Mesh.ArrayFormat] for a list of format flags.
</description>
</method>
<method name="get_material" qualifiers="const">
<return type="Material" />
<description>
Returns the material assigned to the [Mesh].
</description>
</method>
<method name="get_vertex" qualifiers="const">
<return type="Vector3" />
<argument index="0" name="idx" type="int" />
<description>
Returns the vertex at given index.
</description>
</method>
<method name="get_vertex_bones" qualifiers="const">
<return type="PackedInt32Array" />
<argument index="0" name="idx" type="int" />
<description>
Returns the bones of the given vertex.
</description>
</method>
<method name="get_vertex_color" qualifiers="const">
<return type="Color" />
<argument index="0" name="idx" type="int" />
<description>
Returns the color of the given vertex.
</description>
</method>
<method name="get_vertex_count" qualifiers="const">
<return type="int" />
<description>
Returns the total number of vertices in [Mesh].
</description>
</method>
<method name="get_vertex_edges" qualifiers="const">
<return type="PackedInt32Array" />
<argument index="0" name="idx" type="int" />
<description>
Returns an array of edges that share the given vertex.
</description>
</method>
<method name="get_vertex_faces" qualifiers="const">
<return type="PackedInt32Array" />
<argument index="0" name="idx" type="int" />
<description>
Returns an array of faces that share the given vertex.
</description>
</method>
<method name="get_vertex_meta" qualifiers="const">
<return type="Variant" />
<argument index="0" name="idx" type="int" />
<description>
Returns the metadata associated with the given vertex.
</description>
</method>
<method name="get_vertex_normal" qualifiers="const">
<return type="Vector3" />
<argument index="0" name="idx" type="int" />
<description>
Returns the normal of the given vertex.
</description>
</method>
<method name="get_vertex_tangent" qualifiers="const">
<return type="Plane" />
<argument index="0" name="idx" type="int" />
<description>
Returns the tangent of the given vertex.
</description>
</method>
<method name="get_vertex_uv" qualifiers="const">
<return type="Vector2" />
<argument index="0" name="idx" type="int" />
<description>
Returns the UV of the given vertex.
</description>
</method>
<method name="get_vertex_uv2" qualifiers="const">
<return type="Vector2" />
<argument index="0" name="idx" type="int" />
<description>
Returns the UV2 of the given vertex.
</description>
</method>
<method name="get_vertex_weights" qualifiers="const">
<return type="PackedFloat32Array" />
<argument index="0" name="idx" type="int" />
<description>
Returns bone weights of the given vertex.
</description>
</method>
<method name="set_edge_meta">
<return type="void" />
<argument index="0" name="idx" type="int" />
<argument index="1" name="meta" type="Variant" />
<description>
Sets the metadata of the given edge.
</description>
</method>
<method name="set_face_meta">
<return type="void" />
<argument index="0" name="idx" type="int" />
<argument index="1" name="meta" type="Variant" />
<description>
Sets the metadata of the given face.
</description>
</method>
<method name="set_material">
<return type="void" />
<argument index="0" name="material" type="Material" />
<description>
Sets the material to be used by newly-constructed [Mesh].
</description>
</method>
<method name="set_vertex">
<return type="void" />
<argument index="0" name="idx" type="int" />
<argument index="1" name="vertex" type="Vector3" />
<description>
Sets the position of the given vertex.
</description>
</method>
<method name="set_vertex_bones">
<return type="void" />
<argument index="0" name="idx" type="int" />
<argument index="1" name="bones" type="PackedInt32Array" />
<description>
Sets the bones of the given vertex.
</description>
</method>
<method name="set_vertex_color">
<return type="void" />
<argument index="0" name="idx" type="int" />
<argument index="1" name="color" type="Color" />
<description>
Sets the color of the given vertex.
</description>
</method>
<method name="set_vertex_meta">
<return type="void" />
<argument index="0" name="idx" type="int" />
<argument index="1" name="meta" type="Variant" />
<description>
Sets the metadata associated with the given vertex.
</description>
</method>
<method name="set_vertex_normal">
<return type="void" />
<argument index="0" name="idx" type="int" />
<argument index="1" name="normal" type="Vector3" />
<description>
Sets the normal of the given vertex.
</description>
</method>
<method name="set_vertex_tangent">
<return type="void" />
<argument index="0" name="idx" type="int" />
<argument index="1" name="tangent" type="Plane" />
<description>
Sets the tangent of the given vertex.
</description>
</method>
<method name="set_vertex_uv">
<return type="void" />
<argument index="0" name="idx" type="int" />
<argument index="1" name="uv" type="Vector2" />
<description>
Sets the UV of the given vertex.
</description>
</method>
<method name="set_vertex_uv2">
<return type="void" />
<argument index="0" name="idx" type="int" />
<argument index="1" name="uv2" type="Vector2" />
<description>
Sets the UV2 of the given vertex.
</description>
</method>
<method name="set_vertex_weights">
<return type="void" />
<argument index="0" name="idx" type="int" />
<argument index="1" name="weights" type="PackedFloat32Array" />
<description>
Sets the bone weights of the given vertex.
</description>
</method>
</methods>
</class>
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