/*
* public void setElev(Vector3 a, Vector3 b, Vector3 c)
* {
* _elev = new Plane(a, b, c);
* }
* public void setBase(Vector3 a, Vector3 b, Vector3 c)
* {
* _base = new Plane(a, b, c);
* }
*/
public Mesh generate(AXSpline spline, float _height)
{
// If a GameObject is passed, just replace its mesh.
Debug.Log("--- Extrude: " + spline.toString());
height = _height;
float[] angles = spline.getAnglesArray();
int edgeLoopVertCt = spline.getAllocateVertsCt();
if (spline.isClosed && !spline.closeJointIsAcute()) // add a close rib
{
edgeLoopVertCt++;
}
int totalVertCount = 0;
int totalTriangCount = 0;
int vcount = spline.vertCount;
if (!spline.isClosed)
{
vcount--;
}
totalVertCount += ((segs + 1) * edgeLoopVertCt);
totalTriangCount += 3 * (segs * (2 * vcount));
//Debug.Log ("totalVertCount="+totalVertCount);
spline.getAnglesArray();
spline.getUValues();
Vector3[] vertices = new Vector3[totalVertCount];
Vector2[] uv = new Vector2[totalVertCount];
int[] triangles = new int[totalTriangCount * 2];
int index = 0;
int vertCount = 0;
int segThis = 0;
// Create the Geometry
// Run around the outline
float x = 0;
float y = 0;
float z = 0;
float u = 0;
float v = 0;
int i;
float segHgt;
int reps = spline.vertCount - 1;
if (spline.isClosed)
{
reps++;
}
//Debug.Log ("reps="+reps);
// SIDE VERTICES
for (int seg = 0; seg <= segs; seg++)
{
// each vert on spline
for (i = 0; i <= reps; i++)
{
segHgt = getHeight(spline.verts[i].x, spline.verts[i].y, seg);
if (i == spline.vertCount)
{
x = spline.verts[0].x;
y = segHgt;
z = spline.verts[0].y;
}
else
{
x = spline.verts[i].x;
y = segHgt;
z = spline.verts[i].y;
}
if (rotSidesTex && axis != Axis.Y)
{
//Debug.Log ("use height of extrude for u, heigth of vert for v");
u = height * (seg / segs);
v = z;
}
else
{
// Y-Axis, use length along spline
if (i == 0)
{
u = 0;
}
else if (i == spline.vertCount)
{
u = spline.getLength();
}
else
{
u = spline.curve_distances[i];
}
v = height * (seg / segs);
}
u /= uScale;
v /= vScale;
u += uShift;
v += vShift;
vertices[vertCount] = new Vector3(x, y, z); // bottom
uv[vertCount] = new Vector2(u, v);
vertCount++;
if (spline.jointIsAcute(i))
{
vertices[vertCount] = new Vector3(x, y, z);
uv[vertCount] = new Vector2(u, v);
vertCount++;
}
} // end edge loop
// if first vertex is acute, close loop by addeding vert0
/*
* if (angles[0] > spline.breakAngle) {
* u = 1;
*
* vertices[vertCount] = vert0;
* uv[vertCount] = new Vector2(u,v);
* vertCount++;
* }
*/
// Added bottom, now jump to next horizontal....
if (seg == 0)
{
continue;
}
// skin between this edgeLoop and the previous
segThis = seg;
// TRIANGLES /////////////////////////////////////////////////////////////////////////////////////////
// now make triangles
var segPrev = segThis - 1;
int this_L;
int this_U;
int next_L = -1;
int next_U = -1;
var edgeloop_cursor = 0;
for (i = 0; i < reps; i++)
{
if (angles[i] > spline.breakAngle && i > 0)
{
edgeloop_cursor++;
}
this_L = segPrev * edgeLoopVertCt + edgeloop_cursor;
next_L = segPrev * edgeLoopVertCt + ((edgeloop_cursor + 1) % edgeLoopVertCt);
this_U = segThis * edgeLoopVertCt + edgeloop_cursor;
next_U = segThis * edgeLoopVertCt + ((edgeloop_cursor + 1) % edgeLoopVertCt);
triangles[index++] = next_L;
triangles[index++] = this_L;
triangles[index++] = this_U;
triangles[index++] = next_U;
triangles[index++] = next_L;
triangles[index++] = this_U;
edgeloop_cursor++;
}
}
// end segs
Mesh mesh = new Mesh();
mesh.vertices = vertices;
mesh.uv = uv;
mesh.triangles = triangles;
mesh.RecalculateNormals();
/*
* // adjust normals for first and last vert
* if (! spline.closeJointIsAcute())
* {
* Vector3[] norms = mesh.normals;
* Quaternion rotation;
*
* // first rib
* rotation = Quaternion.Euler(0, spline.angles[0], 0);
* norms[0] = rotation * norms[0];
* norms[edgeLoopVertCt] = rotation * norms[edgeLoopVertCt];
*
* // last rib
* rotation = Quaternion.Euler(0, -spline.angles[0], 0);
* norms[spline.vertCount-1] = rotation * norms[spline.vertCount-1];
* norms[spline.vertCount-1+edgeLoopVertCt] = rotation * norms[spline.vertCount-1+edgeLoopVertCt];
*
* mesh.normals = norms;
* }
*/
return(mesh);
}
public Mesh generate(AXSpline _planSpline, AXSpline _sectionSpline, float uShiftNow, float vShiftNow)
{
_planSpline.removeLastVertIfIdenticalToFirst();
//Debug.Log ("topCap="+topCap+", planSpline.isClosed="+_planSpline.isClosed + " : sectionSpline.isClosed=" + _sectionSpline.isClosed);
if (uShiftNow != 0)
{
uShift = uShiftNow;
}
if (vShiftNow != 0)
{
vShift = vShiftNow;
}
if (_planSpline == null || _planSpline.vertCount == 0 || _sectionSpline == null || _sectionSpline.vertCount == 0)
{
return(null);
}
// plan spline
AXSpline planSpline = _planSpline;
// LATER: calc this on whether vert 0 and n are the same.
planSpline.isClosed = false;
planSpline.calcStats();
planSpline.getUValues();
// section spline
AXSpline sectionSpline;
sectionSpline = _sectionSpline.turnRight();
sectionSpline.isClosed = true; //_sectionSpline.isClosed;
sectionSpline.breakAngle = _sectionSpline.breakAngle;
int index = 0;
if (!planSpline.isClosed && !sectionSpline.isClosed)
{
begCap = false;
endCap = false;
}
// ALLOCATE ARRAYS ////////////////////////////////////////////////////////////
// SECTION ALLOCATION
int sec_AdjustedVertsCount = sectionSpline.getAllocateVertsCt();
//if (sectionSpline.isClosed && ! sectionSpline.closeJointIsAcute()) // add a close rib
// sec_AdjustedVertsCount++;
// PLAN ALLOCATION
int plan_AdjustedVertsCount = planSpline.getAllocateVertsCt();
if (planSpline.isClosed && !planSpline.closeJointIsAcute()) // add a close rib
{
plan_AdjustedVertsCount++;
}
int fabricVertCount = plan_AdjustedVertsCount * sec_AdjustedVertsCount + 2;
//Debug.Log
// use the count of sides to determine the quads count in the extrusion
int planSides = planSpline.vertCount;
if (!planSpline.isClosed)
{
planSides--;
}
int sectionSides = sectionSpline.vertCount;
if (!sectionSpline.isClosed)
{
sectionSides--;
}
int quadCount = planSides * sectionSides;
int totalVertCount = fabricVertCount;
int totalTriangCount = 3 * 2 * quadCount;
Vector3[] vertices = new Vector3[totalVertCount];
Vector2[] uv = new Vector2[totalVertCount];
int[] triangles = new int[totalTriangCount];
//Debug.Log("plan_AdjustedVertsCount="+plan_AdjustedVertsCount+", sec_AdjustedVertsCount="+sec_AdjustedVertsCount+", fabricVertCount = "+ fabricVertCount);
// 1. CREATE VERTICES //////////////////////////////////////////////////////////
// i is current vert:
//
// (i-1)
// |
// |
// | edgeAfter
// |
// |
// (i)
// /
// /
// / edgeBefore
// /
// /
// (i-1)
int ribCount = 0;
int planRib_VertCursor = 0;
int vertCursor0 = 0;
Vector2 edgeBefore = Vector2.zero;
Vector2 edgeBeforePerp = Vector2.zero;
Vector2 edgeBeforePerpN = Vector2.zero;
Vector2 edgeAfter = Vector2.zero;
Vector2 edgeAfterPerp = Vector2.zero;
Vector2 edgeAfterPerpN = Vector2.zero;
float uScalerAfter = 1f;
float plan_u = 0f;
// FOR EACH PLAN VERT
for (int i = 0; i < planSpline.vertCount; i++)
{
//Debug.Log ("New PLAN POINT: " + i + " :: ribCount=" + ribCount + ", sec_AdjustedVertsCount="+sec_AdjustedVertsCount);
planRib_VertCursor = ribCount * sec_AdjustedVertsCount;
Debug.Log("planRib_VertCursor[" + i + "] = " + planRib_VertCursor);
plan_u = planSpline.curve_distances[i] / uScale;
//Debug.Log (planSpline.angles[i]);
// EACH Plan node
// ASSUME: If spline is open then the first and last are perpendicular to the end segments.
// For each plan point, find the transformation matrix withwhich to transform the section as a "rib"
// Then traverse the section verts and mutiply them by the plan point matrix.
Matrix4x4 transMatrix = Matrix4x4.identity;
Vector3 translation = new Vector3(planSpline.verts[i].x, 0.0f, planSpline.verts[i].y);
Quaternion rotation = Quaternion.identity;
Vector3 scaler = Vector3.one;
if (!planSpline.isClosed && (i == 0 || i == planSpline.vertCount - 1))
{
// open plan has special treatment of first and last verts
if (i == 0)
{
edgeAfter = planSpline.verts[i + 1] - planSpline.verts[i];
edgeAfterPerp = new Vector2(edgeAfter.y, -edgeAfter.x);
edgeAfterPerpN = edgeAfterPerp.normalized;
rotation = Quaternion.FromToRotation(Vector3.right, new Vector3(edgeAfterPerp.x, 0, edgeAfterPerp.y));
}
else
{
edgeBefore = planSpline.verts[i] - planSpline.verts[i - 1];
edgeBeforePerp = new Vector2(edgeAfter.y, -edgeAfter.x);
edgeBeforePerpN = edgeBeforePerp.normalized;
rotation = Quaternion.FromToRotation(Vector3.right, new Vector3(edgeBeforePerp.x, 0, edgeBeforePerp.y));
}
// scaler remains one
}
else
{
if (i == 0)
{
edgeBefore = planSpline.verts[i] - planSpline.verts[planSpline.vertCount - 1];
}
else
{
edgeBefore = planSpline.verts[i] - planSpline.verts[i - 1];
}
edgeBeforePerp = new Vector2(edgeBefore.y, -edgeBefore.x);
edgeBeforePerpN = edgeBeforePerp.normalized;
if (i == planSpline.vertCount - 1)
{
edgeAfter = planSpline.verts[0] - planSpline.verts[i];
}
else
{
edgeAfter = planSpline.verts[i + 1] - planSpline.verts[i];
}
edgeAfterPerp = new Vector2(edgeAfter.y, -edgeAfter.x);
edgeAfterPerpN = edgeAfterPerp.normalized;
// the addition of the normalized perpendicular vectors leads to a bisector
Vector2 bisector = edgeAfterPerpN + edgeBeforePerpN;
rotation = Quaternion.FromToRotation(Vector3.right, new Vector3(bisector.x, 0, bisector.y));
float biAngle = Vector2.Angle(bisector, edgeAfter);
// we can get the scaler from the dot product
float scalerVal = 1 / Vector2.Dot(edgeBeforePerpN, bisector.normalized);
scaler = new Vector3(scalerVal, 1, 1);
uScalerAfter = scalerVal * Mathf.Cos(Mathf.Deg2Rad * biAngle);
//Debug.Log ("biAngle="+biAngle + " :: " + Mathf.Cos (Mathf.Deg2Rad*biAngle) + ", scalerVal="+scalerVal + " -- " + scalerVal*Mathf.Cos (Mathf.Deg2Rad*biAngle));
}
//Debug.Log("["+i+"] " + translation + " :: " + rotation + " :: " + scaler);
transMatrix.SetTRS(translation, rotation, scaler);
// ADD RIB -----------------------------------------------------------------------------
// FOR EACH POINT IN SECTION SPLINE (sectionSpline)
int section_VertCursor = 0;
Vector3 vert = Vector3.zero;
int j;
float u = 0;
float nu = 0;
float v = 0;
int ribEnd_vertIndex = 0;
int ribBeg_vertIndex = 0;
// ** A RIB **
// ** each spline vert
// ** - transform by plan location, rotation and scale
for (j = 0; j <= sectionSpline.vertCount; j++)
{
if (!sectionSpline.isClosed && j == sectionSpline.vertCount)
{
break;
}
/* **** VERT IS CREATED *** */
if (j == sectionSpline.vertCount) // return to first vert
{
vert = transMatrix.MultiplyPoint(new Vector3(-sectionSpline.verts[0].y, sectionSpline.verts[0].x, 0));
}
else
{
vert = transMatrix.MultiplyPoint(new Vector3(-sectionSpline.verts[j].y, sectionSpline.verts[j].x, 0));
}
// THIS IS THE MAIN SECTION OF CODE //
// Determine UV coordinates
// THIS_U
if (i == 0 && !planSpline.closeJointIsAcute())
{
u = uShift + plan_u;
}
else
{
u = uShift + plan_u - (uScalerAfter * sectionSpline.verts[j].y / uScale);
}
// NEXT_U (AFTER BREAK BUT AT SAME LOCATION)
if (planSpline.jointIsAcute(i) || (i == 0 && planSpline.closeJointIsAcute()))
{
if (i == 0 && planSpline.isClosed)
{
nu = uShift + (planSpline.getLength() / uScale) + (uScalerAfter * sectionSpline.verts[j].y / uScale);
}
else
{
nu = uShift + plan_u + (uScalerAfter * sectionSpline.verts[j].y / uScale);
}
}
else
{
if (i == 0 && planSpline.isClosed)
{
nu = uShift + (planSpline.getLength() / uScale);
}
else
{
nu = uShift + plan_u;
}
}
// THIS_V
if (j == sectionSpline.vertCount)
{
v = vShift + sectionSpline.getLength() / vScale;
}
else
{
v = vShift + sectionSpline.curve_distances[j] / vScale;
}
// determine vertices address
if (i == 0 && planSpline.isClosed)
{
ribEnd_vertIndex = (fabricVertCount - sec_AdjustedVertsCount) + section_VertCursor;
ribBeg_vertIndex = planRib_VertCursor + section_VertCursor;
}
else
{
ribEnd_vertIndex = planRib_VertCursor + section_VertCursor;
ribBeg_vertIndex = planRib_VertCursor + section_VertCursor + sec_AdjustedVertsCount;
}
// ** ADD THIS VERT TO MESH VERTICES **
vertices[ribEnd_vertIndex] = vert;
uv[ribEnd_vertIndex] = new Vector2(nu, v);
//Debug.Log ("Add ribEnd_vertIndex="+ribEnd_vertIndex + " -- "+vertices[ribEnd_vertIndex]);
if ((i > 0 && planSpline.jointIsAcute(i)) || (i == 0 && planSpline.isClosed))
{
// add an additional vert in the next rib (in same location
vertices[ribBeg_vertIndex] = vert;
uv[ribBeg_vertIndex] = new Vector2(u, v);
//Debug.Log ("Add ribBeg_vertIndex="+ribBeg_vertIndex + " -- "+vertices[ribBeg_vertIndex]);
}
section_VertCursor++;
// SECTION BREAK?
if (j < sectionSpline.vertCount && sectionSpline.jointIsAcute(j))
{
// ** ADD THIS VERT TO MESH VERTICES (AGAIN) ** (and restart the u?)
// add an additional section point in the same location
if (i == 0 && planSpline.isClosed)
{
ribEnd_vertIndex = (fabricVertCount - sec_AdjustedVertsCount) + section_VertCursor;
ribBeg_vertIndex = planRib_VertCursor + section_VertCursor;
}
else
{
ribEnd_vertIndex = planRib_VertCursor + section_VertCursor;
ribBeg_vertIndex = planRib_VertCursor + section_VertCursor + sec_AdjustedVertsCount;
}
//Debug.Log ("ribEnd_vertIndex="+ribEnd_vertIndex+", ribBeg_vertIndex="+ribBeg_vertIndex + " -- "+vertices[ribBeg_vertIndex]);
vertices[ribEnd_vertIndex] = vert;
uv[ribEnd_vertIndex] = new Vector2(nu, v);
//Debug.Log ("Add ribEnd_vertIndex="+ribEnd_vertIndex + " -- "+vertices[ribEnd_vertIndex]);
if ((i > 0 && planSpline.jointIsAcute(i)) || (i == 0 && planSpline.isClosed))
{
// add an additional vert in the next rib (in same location
vertices[ribBeg_vertIndex] = vert;
uv[ribBeg_vertIndex] = new Vector2(u, v);
//Debug.Log ("Add ribBeg_vertIndex="+ribBeg_vertIndex + " -- "+vertices[ribBeg_vertIndex]);
}
section_VertCursor++;
}
}
ribCount++; // COUNT THIS RIB, ie, RIB
if (planSpline.jointIsAcute(i))
{
ribCount++; // ADD ADDITIONAL RIB COUNT
}
}
// 2. CREATE TRIANGLES //////////////////////////////////////////////////////////
int LRib_L;
int RRib_L;
int LRib_U;
int RRib_U;
int leftRib = 0;
// FOREACH PLAN NODE.......
for (int i = 1; i <= planSpline.vertCount; i++)
{
if (i == planSpline.vertCount && !planSpline.isClosed)
{
break;
}
// from left to right
planRib_VertCursor = leftRib * sec_AdjustedVertsCount;
vertCursor0 = planRib_VertCursor;
// FOREACH SEC NODE.......
for (int j = 1; j <= sectionSpline.vertCount; j++)
{
if (j == sectionSpline.vertCount && !sectionSpline.isClosed)
{
break;
}
LRib_L = planRib_VertCursor;
if (j == sectionSpline.vertCount && sectionSpline.isClosed && !sectionSpline.closeJointIsAcute())
{
//Debug.Log ("GOING BACK TO SEC ORIGN...");
LRib_U = vertCursor0;
}
else
{
LRib_U = LRib_L + 1;
}
// use next rib's points ( Never loop back to use rib0)
RRib_L = LRib_L + sec_AdjustedVertsCount;
RRib_U = LRib_U + sec_AdjustedVertsCount;
triangles[index++] = LRib_L;
triangles[index++] = RRib_U;
triangles[index++] = RRib_L;
triangles[index++] = LRib_L;
triangles[index++] = LRib_U;
triangles[index++] = RRib_U;
planRib_VertCursor++;
if (j < sectionSpline.vertCount && sectionSpline.jointIsAcute(j))
{
planRib_VertCursor++;
}
}
// GO TO NEXT SEGMENT
leftRib++;
if (i < planSpline.vertCount && planSpline.jointIsAcute(i))
{
leftRib++;
}
}
Mesh mesh = new Mesh();
mesh.vertices = vertices;
mesh.uv = uv;
mesh.triangles = triangles;
// Auto-calculate vertex normals from the mesh
mesh.RecalculateNormals();
return(mesh);
}
