1.8 KiB
1.8 KiB
Extrude a spline at runtime
To extrude a spline at runtime, use a script to create a new GameObject with a SplineContainer component. You can then access the spline from the SplineContainer and add knots to it.
using UnityEngine;
using UnityEngine.Splines;
using Unity.Mathematics;
public class ExtrudeExample : MonoBehaviour
{
void Start()
{
var splineContainer = new GameObject("Spline").AddComponent<SplineContainer>();
splineContainer.Spline = new Spline();
splineContainer.Spline.AddRange(new float3[]
{
new (0, 0, 0),
new (0, 0, 1),
new (1, 0, 1),
new (1, 0, 0)
});
var go = splineContainer.gameObject;
var extrudeComponent = go.AddComponent<SplineExtrude>();
extrudeComponent.Container = splineContainer;
var hasMeshFilter = go.TryGetComponent<MeshFilter>(out var meshFilter);
if (hasMeshFilter)
{
if (meshFilter.sharedMesh == null)
{
var extrudeMesh = new Mesh();
extrudeMesh.name = "Spline Extrude Mesh";
meshFilter.sharedMesh = extrudeMesh;
}
extrudeComponent.Radius = 0.25f;
extrudeComponent.SegmentsPerUnit = 20;
extrudeComponent.Sides = 8;
extrudeComponent.Range = new float2(0, 100);
var hasMeshRenderer = go.TryGetComponent<MeshRenderer>(out var meshRenderer);
if (hasMeshRenderer)
meshRenderer.material = new Material(Shader.Find("Standard"));
}
}
}