public override object initialize(MeshFilter mf, MeshRenderer mr)
{
AnimatedConeState state = new AnimatedConeState();
state.currentState = new ConeState();
state.materialModifierState = new MaterialModifierState();
state.mr = mr;
return(state);
}
public override void updateMesh(AnimatedMeshState state)
{
Vector3[] vertices = state.mesh.vertices;
AnimatedConeState acState = state.data as AnimatedConeState;
ConeState current = acState.currentState;
float lifeRatio = state.lifeRatio;
int numVertices = this.data.numVertices;
int i;
current.length = Mathf.Lerp(this.data.initialState.length, this.data.finalState.length, this.data.interpolationCurve.Evaluate(lifeRatio));
current.radiusBottom = Mathf.Lerp(this.data.initialState.radiusBottom, this.data.finalState.radiusBottom, this.data.interpolationCurve.Evaluate(lifeRatio));
current.radiusTop = Mathf.Lerp(this.data.initialState.radiusTop, this.data.finalState.radiusTop, this.data.interpolationCurve.Evaluate(lifeRatio));
for (i = 0; i < numVertices; ++i)
{
float angle = 2 * Mathf.PI * i / numVertices;
float angleSin = Mathf.Sin(angle);
float angleCos = Mathf.Cos(angle);
vertices[i] = new Vector3(current.radiusTop * angleCos, current.radiusTop * angleSin, -current.length);
vertices[i + numVertices + 1] = new Vector3(current.radiusBottom * angleCos, current.radiusBottom * angleSin, 0);
}
// connecting edges
++numVertices;
vertices[i] = new Vector3(vertices[0].x, vertices[0].y, vertices[0].z);
vertices[i + numVertices] = new Vector3(vertices[numVertices].x, vertices[numVertices].y, vertices[numVertices].z);
--numVertices;
state.mesh.vertices = vertices;
if (this.data.materialModifier && acState.mr)
{
this.data.materialModifier.update(acState.materialModifierState, this.data.interpolationCurve.Evaluate(lifeRatio));
this.data.materialModifier.updateMaterial(acState.materialModifierState, acState.mr.material);
}
}
public override Mesh generateMesh(AnimatedMeshState state)
{
AnimatedConeState acState = state.data as AnimatedConeState;
Vector3[] vertices;
Mesh mesh;
int numVertices = this.data.numVertices;
ConeState init = this.data.initialState;
string path = meshPrefabPath + "Cone" + this.data.numVertices + "v" + init.radiusTop +
"t" + init.radiusBottom + "b" + init.length + "l" + init.length + "o" + ".asset";
if (!this.createAsset || !(mesh = (Mesh)AssetDatabase.LoadAssetAtPath(path, typeof(Mesh))))
{
mesh = new Mesh();
mesh.Clear();
numVertices += 1; // for correct uv mapping (to join correctly the faces)
vertices = new Vector3[2 * numVertices]; // 0..n-1: top, n..2n-1: bottom
Vector3[] normals = new Vector3[2 * numVertices];
Vector2[] uvs = new Vector2[2 * numVertices];
int[] tris;
float slope = Mathf.Atan((init.radiusBottom - init.radiusTop) / init.length); // (rad difference)/height
float slopeSin = Mathf.Sin(slope);
float slopeCos = Mathf.Cos(slope);
int i;
--numVertices;
for (i = 0; i < numVertices; ++i)
{
float angle = 2 * Mathf.PI * i / numVertices;
float angleSin = Mathf.Sin(angle);
float angleCos = Mathf.Cos(angle);
float angleHalf = 2 * Mathf.PI * (i + 0.5f) / numVertices; // for degenerated normals at cone tips
float angleHalfSin = Mathf.Sin(angleHalf);
float angleHalfCos = Mathf.Cos(angleHalf);
vertices[i] = new Vector3(init.radiusTop * angleCos, init.radiusTop * angleSin, -init.length);
vertices[i + numVertices + 1] = new Vector3(init.radiusBottom * angleCos, init.radiusBottom * angleSin, 0);
normals[i] = new Vector3(angleCos * slopeCos, angleSin * slopeCos, -slopeSin);
normals[i + numVertices + 1] = new Vector3(angleCos * slopeCos, angleSin * slopeCos, -slopeSin);
uvs[i] = new Vector2(1.0f * i / numVertices, 1);
uvs[i + numVertices + 1] = new Vector2(1.0f * i / numVertices, 0);
}
// connecting edges
++numVertices;
vertices[i] = new Vector3(vertices[0].x, vertices[0].y, vertices[0].z);
vertices[i + numVertices] = new Vector3(vertices[numVertices].x, vertices[numVertices].y, vertices[numVertices].z);
uvs[i] = new Vector2(1, 1);
uvs[i + numVertices] = new Vector2(1, 0);
normals[i] = new Vector3(normals[0].x, normals[0].y, normals[0].z);
normals[i + numVertices] = new Vector3(normals[numVertices].x, normals[numVertices].y, normals[numVertices].z);
mesh.vertices = vertices;
mesh.normals = normals;
mesh.uv = uvs;
// creating triangles
int cnt = 0;
tris = new int[numVertices * 6];
for (i = 0; i < numVertices; i++)
{
int ip1 = i + 1;
if (ip1 == numVertices)
{
ip1 = 0;
}
tris[cnt++] = i;
tris[cnt++] = ip1;
tris[cnt++] = i + numVertices;
tris[cnt++] = ip1 + numVertices;
tris[cnt++] = i + numVertices;
tris[cnt++] = ip1;
}
--numVertices;
mesh.triangles = tris;
if (this.createAsset)
{
AssetDatabase.CreateAsset(mesh, path);
AssetDatabase.SaveAssets();
}
}
return(mesh);
}
