public static void GenerateMeshDataFromPoints(ref MeshData meshData, Vector3[] points, Vector3 camera, Vector3 worldCentroid, float width, bool continuous = false, bool append = false)
{
if ( points.Length < 2 ) { throw new System.ArgumentException("Points array must contain at least two points."); }
if (!append) {
meshData.Clear ();
}
Vector3 lastEndDirection = (points[1] - points[0]).normalized;
for(int i=1; i < points.Length; i++) {
Vector3 p1 = points[i-1];
Vector3 p2 = points[i];
if ( p1 == p2 ) { continue; }
if ( lastEndDirection.magnitude == 0.0f ) {
lastEndDirection = (p2 - p1).normalized;
}
float p1Dist = (camera - p1).magnitude;
float p2Dist = (camera - p2).magnitude;
LineSegment segment;
if ( continuous ) {
Vector3 endDirection = (p2 - p1).normalized;
if ( i + 1 < points.Length ) {
Vector3 nextDirection = (points[i+1] - p2).normalized;
endDirection = Vector3.Lerp(endDirection, nextDirection, 0.5f);
}
segment = new LineSegment(p1, p2, width * p1Dist, width * p2Dist, lastEndDirection, endDirection);
}
else {
segment = new LineSegment(p1, p2, width * p1Dist, width * p2Dist);
i++;
}
GenerateMeshDataFromSegmentData(ref meshData, segment, worldCentroid, true);
}
}
private void GenerateNewMesh(Vector3[] points)
{
if (Target == null) {
throw new System.NullReferenceException ("Line needs a target camera to calulate its facing.");
}
MeshData meshData = new MeshData ();
LineGenerators.GenerateMeshDataFromPoints (ref meshData, points, Target.position, transform.position, Width, Continuous, false);
_MeshFilter.mesh = meshData.GenerateMeshFromData();
}
/// <summary>
/// Generates the mesh data for a single line segent via the given LineSegment struct.
/// </summary>
/// <param name="meshData">Reference to the MeshData object in which to store the generated data.</param>
/// <param name="segmentData">The line segment data from which to generate the mesh data.</param>
/// <param name="normal">The normal direction of the mesh to be generated</param>
/// <param name="uCoordinateStart">The U coordinate of the mesh UV to be assinged to the starting point end-cap verticies.</param>
/// <param name="uCoordinateEnd">The U coordinate of the mesh UV to be assinged to the ending point end-cap verticies.</param>
/// <param name="append">If set to <c>true</c> the generated mesh data will be appended to the mesh data reference. If set to <c>false<c> the data will be overritten. Defaults to <c>false</c></param>
public static void GenerateMeshDataFromSegmentData(ref MeshData meshData, LineSegment segmentData, Vector3 worldOffset, float uCoordinateStart, float uCoordinateEnd, bool append = false)
{
if (!segmentData.Valid) {
Debug.Log ("Segment: ");
Debug.Log ("p1: " + segmentData.P1);
Debug.Log ("p2: " + segmentData.P2);
Debug.Log ("startD: " + segmentData.StartDirection);
Debug.Log ("endD: " + segmentData.EndDirection);
Debug.Log ("startWidth: " + segmentData.StartWidth);
Debug.Log ("endWidth: " + segmentData.EndWidth);
throw new System.ArgumentException("Segment data must be valid");
}
Vector3[] verts;
int[] tris;
Vector3[] normals;
Vector2[] uvs;
if ( !append ) { meshData.Clear(); }
int vertsStartIndex = meshData.Verts.Length;
int trisStartIndex = meshData.Tris.Length;
int normalsStartIndex = meshData.Normals.Length;
int uvStartIndex = meshData.UVs.Length;
verts = new Vector3[meshData.Verts.Length + 8];
tris = new int[meshData.Tris.Length + 24];
normals = new Vector3[normalsStartIndex + 8];
uvs = new Vector2[ meshData.UVs.Length + 8];
Array.Copy (meshData.Verts, verts, meshData.Verts.Length);
Array.Copy (meshData.Tris, tris, meshData.Tris.Length);
Array.Copy (meshData.Normals, normals, normalsStartIndex);
Array.Copy (meshData.UVs, uvs, meshData.UVs.Length);
const int vertexCountPerRing = 4;
const int rings = 2;
Vector3[] tubeVerts = QuadTubeVerts (new Vector3[] {segmentData.P1, segmentData.P2}, new float[] { segmentData.StartWidth, segmentData.EndWidth }, vertexCountPerRing, worldOffset);
Array.Copy (tubeVerts, 0, verts, vertsStartIndex, tubeVerts.Length);
//int[] tris = new int[vertexCountPerRing * 6 * (rings-1)];
//Vector2[] uvs = new Vector2[verts.Length];
for ( int ringIndex=0;ringIndex<rings;ringIndex++ ) {
float vComponent = ringIndex / (float)rings;
for ( int faceIndex=0;faceIndex<vertexCountPerRing;faceIndex++ ) {
int ringBase = ringIndex * vertexCountPerRing;
int vertIndex = (ringIndex * vertexCountPerRing) + faceIndex;
if ( ringIndex < rings-1 ) { // No more tris to make after the second to last ring
int triIndex = (ringIndex * vertexCountPerRing * 6) + (faceIndex * 6);
// bottom-left, top-left, top-right
tris[trisStartIndex+triIndex] = vertsStartIndex + ringBase + faceIndex;
tris[trisStartIndex+triIndex+1] = vertsStartIndex + ringBase + vertexCountPerRing + (faceIndex % vertexCountPerRing);
tris[trisStartIndex+triIndex+2] = vertsStartIndex + ringBase + vertexCountPerRing + ((faceIndex + + 1) % vertexCountPerRing);
// bottom-right, bottom-left, top-right
tris[trisStartIndex+triIndex+3] = vertsStartIndex + ringBase + ((faceIndex + 1) % vertexCountPerRing);
tris[trisStartIndex+triIndex+4] = vertsStartIndex + ringBase + faceIndex;
tris[trisStartIndex+triIndex+5] = vertsStartIndex + ringBase + vertexCountPerRing + ((faceIndex + 1) % vertexCountPerRing);
}
float uComponent = faceIndex / (float)(vertexCountPerRing - 1);
uvs[uvStartIndex+vertIndex] = new Vector2(uComponent, vComponent);
}
}
meshData.Verts = verts;
meshData.Tris = tris;
meshData.Normals = normals;
meshData.UVs = uvs;
}
/// <summary>
/// Generates the mesh data for a single line segent via the given LineSegment struct.
/// </summary>
/// <param name="meshData">Reference to the MeshData object in which to store the generated data.</param>
/// <param name="segmentData">The line segment data from which to generate the mesh data.</param>
/// <param name="normal">The normal direction of the mesh to be generated</param>
/// <param name="append">If set to <c>true</c> the generated mesh data will be appended to the mesh data reference. If set to <c>false<c> the data will be overritten. Defaults to <c>false</c></param>
public static void GenerateMeshDataFromSegmentData(ref MeshData meshData, LineSegment segmentData, Vector3 worldOffset, bool append = false)
{
GenerateMeshDataFromSegmentData ( ref meshData, segmentData, worldOffset, 0.0f, 1.0f, append);
}
/// <summary>
/// Recalculates the facing of a given quad. Assumes that the two long edges of the quad are parrallel.
/// </summary>
/// <param name="meshData">Mesh data.</param>
/// <param name="verts">Verts.</param>
/// <param name="width">Width.</param>
/// <param name="normal">Normal.</param>
/// <param name="append">If set to <c>true</c> append.</param>
public static void RecalculateQuadFacing(ref MeshData meshData, Vector3[] verts, Vector3 camera, float width, bool append = false)
{
if (verts.Length != 4) {
throw new System.ArgumentOutOfRangeException ("Verts array must be of length 4.");
}
if (!append) {
meshData.Clear ();
}
Vector3 surfaceNormal = Vector3.Cross (verts[3] - verts[0], verts[1] - verts[0]).normalized;
Vector3 startCapVector = verts [3] - verts [0];
Vector3 endCapVector = verts [2] - verts [1];
Vector3 startDirection = Vector3.Cross (surfaceNormal, startCapVector).normalized;
Vector3 endDirection = Vector3.Cross (surfaceNormal, endCapVector).normalized;
Vector3 p1 = Vector3.Lerp (verts [2], verts [1], 0.5f);
Vector3 p2 = Vector3.Lerp (verts [3], verts [0], 0.5f);
float p1Dist = (camera - p1).magnitude;
float p2Dist = (camera - p2).magnitude;
LineSegment segment = new LineSegment (p1, p2, width * p1Dist, width * p2Dist, startDirection, endDirection);
GenerateMeshDataFromSegmentData (ref meshData, segment, Vector3.zero, append);
}
