Mesh

Represents a 3D mesh, containing vertices, indices, and other geometric data.

Type	Name	Interface Description
Variables	boundingBox: AABB	• Function: Gets the axis-aligned bounding box (AABB) of the mesh.
Functions	constructor()
Functions	getTopology(): MeshTopology	• Function: Gets the topology of the mesh. Returns The mesh topology.
Functions	getTriangles(): Uint16Array	• Function: Gets the triangle indices of the mesh as a 16-bit array. Returns A Uint16Array of vertex indices forming the triangles.
Functions	getVertexAttributes(): VertexAttributeDesc[]	• Function: Gets the vertex attributes of the mesh. Returns An array of vertex attribute descriptors.
Functions	getVertexCount(): number	• Function: Gets the number of vertices in the mesh. Returns The vertex count.
Functions	getVertices(): Float32Array	• Function: Gets the vertex data of the mesh. Returns A Float32Array containing the vertex positions.

Examples

constructor()

let obj = new APJS.Mesh();

Use Case

Change a 3D object's material color at runtime via MeshRenderer.mainMaterial

@component()
export class MaterialColorChange extends APJS.BasicScriptComponent {
  @serializeProperty
  private targetColor: APJS.Color = new APJS.Color(1, 0, 0, 1);

  onStart(): void {
    this.applyColor(this.targetColor);
  }

  private applyColor(color: APJS.Color): void {
    const renderer = this.getSceneObject().getComponent("MeshRenderer") as APJS.MeshRenderer;
    // Use mainMaterial for single material access
    // Use setVector (NOT setVector4 — it doesn't exist)
    if (renderer && renderer.mainMaterial) {
      renderer.mainMaterial.setVector("_AlbedoColor", new APJS.Vector4f(color.r, color.g, color.b, color.a));
    }
  }

  onDestroy(): void {}
}