j'ai récupéré un script cs qui construit un cube de manière procédurale:
Code : Tout sélectionner
//tiré de: http://www.theappguruz.com/blog/simple-cube-mesh-generation-unity3d
using UnityEngine;
using System.Collections;
public class build_cube4 : MonoBehaviour
{
/// <summary>
/// Length of the Cube
/// </summary>
public float cubeLength;
/// <summary>
/// width of the Cube
/// </summary>
public float cubeWidth;
/// <summary>
/// Height of the Cube
/// </summary>
public float cubeHeight;
/// <summary>
/// Mesh used to generate cube
/// </summary>
private Mesh cubeMesh;
private Material cubeMat;
// Use this for initialization
void Start()
{
MakeCube();
//pas avant
for(int a=0;a<8;a++)
{
print("vertices: \n"+GetVertices()[a]);
}
}
/// <summary>
/// Get Vertices of the cube
/// </summary>
/// <returns></returns>
private Vector3[] GetVertices()
{
Vector3 vertice_0 = new Vector3(-cubeLength * .5f, -cubeWidth * .5f, cubeHeight * .5f);
Vector3 vertice_1 = new Vector3(cubeLength * .5f, -cubeWidth * .5f, cubeHeight * .5f);
Vector3 vertice_2 = new Vector3(cubeLength * .5f, -cubeWidth * .5f, -cubeHeight * .5f);
Vector3 vertice_3 = new Vector3(-cubeLength * .5f, -cubeWidth * .5f, -cubeHeight * .5f);
Vector3 vertice_4 = new Vector3(-cubeLength * .5f, cubeWidth * .5f, cubeHeight * .5f);
Vector3 vertice_5 = new Vector3(cubeLength * .5f, cubeWidth * .5f, cubeHeight * .5f);
Vector3 vertice_6 = new Vector3(cubeLength * .5f, cubeWidth * .5f, -cubeHeight * .5f);
Vector3 vertice_7 = new Vector3(-cubeLength * .5f, cubeWidth * .5f, -cubeHeight * .5f);
Vector3[] vertices = new Vector3[]
{
// Bottom Polygon
vertice_0, vertice_1, vertice_2, vertice_3,
// Left Polygon
vertice_7, vertice_4, vertice_0, vertice_3,
// Front Polygon
vertice_4, vertice_5, vertice_1, vertice_0,
// Back Polygon
vertice_6, vertice_7, vertice_3, vertice_2,
// Right Polygon
vertice_5, vertice_6, vertice_2, vertice_1,
// Top Polygon
vertice_7, vertice_6, vertice_5, vertice_4
};
Vector3[] vertices2 = new Vector3[]
{
// Bottom Polygon
vertice_0, vertice_1, vertice_2, vertice_3,
// Left Polygon
vertice_4, vertice_5, vertice_6, vertice_7
// Front Polygon
};
return vertices;
}
/// <summary>
/// The Cube Side Which Are Use when rendering Cube
/// </summary>
/// <returns>The normals.</returns>
private Vector3[] GetNormals()
{
Vector3 up = Vector3.up;
Vector3 down = Vector3.down;
Vector3 front = Vector3.forward;
Vector3 back = Vector3.back;
Vector3 left = Vector3.left;
Vector3 right = Vector3.right;
Vector3[] normales = new Vector3[]
{
// Bottom Side Render
down, down, down, down,
// LEFT Side Render
left, left, left, left,
// FRONT Side Render
front, front, front, front,
// BACK Side Render
back, back, back, back,
// RIGTH Side Render
right, right, right, right,
// UP Side Render
up, up, up, up
};
return normales;
}
/// <summary>
/// Get the UVs Map of the cube
/// </summary>
/// <returns></returns>
private Vector2[] GetUVsMap()
{
Vector2 _00_CORDINATES = new Vector2(0f, 0f);
Vector2 _10_CORDINATES = new Vector2(1f, 0f);
Vector2 _01_CORDINATES = new Vector2(0f, 1f);
Vector2 _11_CORDINATES = new Vector2(1f, 1f);
Vector2[] uvs = new Vector2[]
{
// Bottom
_11_CORDINATES, _01_CORDINATES, _00_CORDINATES, _10_CORDINATES,
// Left
_11_CORDINATES, _01_CORDINATES, _00_CORDINATES, _10_CORDINATES,
// Front
_11_CORDINATES, _01_CORDINATES, _00_CORDINATES, _10_CORDINATES,
// Back
_11_CORDINATES, _01_CORDINATES, _00_CORDINATES, _10_CORDINATES,
// Right
_11_CORDINATES, _01_CORDINATES, _00_CORDINATES, _10_CORDINATES,
// Top
_11_CORDINATES, _01_CORDINATES, _00_CORDINATES, _10_CORDINATES,
};
return uvs;
}
/// <summary>
/// Get the triangle
/// </summary>
/// <returns></returns>
private int[] GetTriangles()
{
int[] triangles = new int[]
{
// Cube Bottom Side Triangles
3, 1, 0,
3, 2, 1,
// Cube Left Side Triangles
3 + 4 * 1, 1 + 4 * 1, 0 + 4 * 1,
3 + 4 * 1, 2 + 4 * 1, 1 + 4 * 1,
// Cube Front Side Triangles
3 + 4 * 2, 1 + 4 * 2, 0 + 4 * 2,
3 + 4 * 2, 2 + 4 * 2, 1 + 4 * 2,
// Cube Back Side Triangles
3 + 4 * 3, 1 + 4 * 3, 0 + 4 * 3,
3 + 4 * 3, 2 + 4 * 3, 1 + 4 * 3,
// Cube Rigth Side Triangles
3 + 4 * 4, 1 + 4 * 4, 0 + 4 * 4,
3 + 4 * 4, 2 + 4 * 4, 1 + 4 * 4,
// Cube Top Side Triangles
3 + 4 * 5, 1 + 4 * 5, 0 + 4 * 5,
3 + 4 * 5, 2 + 4 * 5, 1 + 4 * 5,
};
return triangles;
}
/// <summary>
/// Gets the Mesh
/// </summary>
/// <returns></returns>
private Mesh GetCubeMesh()
{
if (GetComponent<MeshFilter>() == null)
{
Mesh mesh;
MeshFilter filter = gameObject.AddComponent<MeshFilter>();
mesh = filter.mesh;
mesh.Clear();
return mesh;
}
else
{
return gameObject.AddComponent<MeshFilter>().mesh;
}
}
/// <summary>
/// Makes the Cube
/// </summary>
void MakeCube()
{
cubeMesh = GetCubeMesh();
cubeMesh.vertices = GetVertices();
cubeMesh.normals = GetNormals();
cubeMesh.uv = GetUVsMap();
cubeMesh.triangles = GetTriangles();
cubeMesh.RecalculateBounds();
cubeMesh.RecalculateNormals();
cubeMesh.Optimize();
}
}
merci de votre aide
