/*
* void GenerateCap(List<Vector3> vertices, List<Vector2> uvs, List<Vector3> normals, List<int> triangles)
* {
* if (feature_info.s_feature == 1)//rectangle
* {
*
* Vector3 center = (feature_info.rec[0] + feature_info.rec[2]) / 2;
*
*
* //bottom
* for(int i = 0; i < 4; i++)
* {
* vertices.Add(feature_info.rec[i]);
* normals.Add( -direct * feature_info.rec_plane.normal);
*
* }
* uvs.Add(new Vector2(0.0f, 0.0f));
* uvs.Add(new Vector2(1.0f, 0.0f));
* uvs.Add(new Vector2(1.0f, 1.0f));
* uvs.Add(new Vector2(0.0f, 1.0f));
*
*
*
* //top
* for (int i = 0; i < 4; i++)
* {
* vertices.Add(feature_info.rec[i]+length * feature_info.rec_plane.normal);
* normals.Add(direct * feature_info.rec_plane.normal);
*
* }
*
* uvs.Add(new Vector2(0.0f, 0.0f));
* uvs.Add(new Vector2(1.0f, 0.0f));
* uvs.Add(new Vector2(1.0f, 1.0f));
* uvs.Add(new Vector2(0.0f, 1.0f));
*
* vertices.Add(center);
* uvs.Add(new Vector2(0.5f, 0.5f));
* normals.Add(-direct * feature_info.rec_plane.normal);
*
* vertices.Add(center + length * feature_info.rec_plane.normal);
* uvs.Add(new Vector2(0.5f, 0.5f));
* normals.Add(direct * feature_info.rec_plane.normal);
*
* //direction: 1-positive, -1 -negative
* if (direct == 1)
* {
* //bottom
* int j = 0;
* for (int i = 0; i < 4; i++)
* {
* triangles.Add(8 + 1 * j);
* triangles.Add(i + 4 * j);
*
* if (i != 3)
* {
* triangles.Add(i + 1 + 4 * j);
* }
* else
* {
* triangles.Add(0 + 4 * j);
* }
* }
*
* //top
* j = 1;
* for (int i = 0; i < 4; i++)
* {
* triangles.Add(8 + 1 * j);
*
* if (i != 3)
* {
* triangles.Add(i + 1 + 4 * j);
* }
* else
* {
* triangles.Add(0 + 4 * j);
* }
*
* triangles.Add(i + 4 * j);
*
* }
* }
* else
* {
* //bottom
* int j = 0;
* for (int i = 0; i < 4; i++)
* {
* triangles.Add(i + 4 * j);
* triangles.Add(8 + 1 * j);
*
*
* if (i != 3)
* {
* triangles.Add(i + 1 + 4 * j);
* }
* else
* {
* triangles.Add(0 + 4 * j);
* }
* }
*
* //top
* j = 1;
* for (int i = 0; i < 4; i++)
* {
* triangles.Add(8 + 1 * j);
* triangles.Add(i + 4 * j);
*
* if (i != 3)
* {
* triangles.Add(i + 1 + 4 * j);
* }
* else
* {
* triangles.Add(0 + 4 * j);
* }
*
*
*
* }
* }
*
*
* }
* else if (feature_info.s_feature == 2)
* {
* int segments = 60;
* Vector3 temp;
*
* float angle = 0.0f;
*
* //bottom
* for (int i = 0; i < (segments); i++)
* {
* temp = feature_info.cir.center + Mathf.Cos(Mathf.Deg2Rad * angle) * feature_info.cir.radius.x * feature_info.cir.cir_plane.u + Mathf.Sin(Mathf.Deg2Rad * angle) * feature_info.cir.radius.y * feature_info.cir.cir_plane.v;
* vertices.Add(temp);
* uvs.Add(new Vector2((float)i / (segments - 1), 0.0f));
*
* //normals.Add(new Vector3(0,0,1));
* normals.Add(-direct * feature_info.cir.cir_plane.normal);
*
* angle += (360f / segments);
* }
* //top
* angle = 0.0f;
* for (int i = 0; i < (segments); i++)
* {
* temp = feature_info.cir.center + Mathf.Cos(Mathf.Deg2Rad * angle) * feature_info.cir.radius.x * feature_info.cir.cir_plane.u + Mathf.Sin(Mathf.Deg2Rad * angle) * feature_info.cir.radius.y * feature_info.cir.cir_plane.v;
* temp = temp + +length * feature_info.cir.cir_plane.normal;
* vertices.Add(temp);
* uvs.Add(new Vector2((float)i / (segments - 1), 1.0f));
* normals.Add(direct * feature_info.cir.cir_plane.normal);
*
* angle += (360f / segments);
* }
*
* vertices.Add(feature_info.cir.center);
* uvs.Add(new Vector2(0.5f, 0.5f));
* //normals.Add(new Vector3(0, 0, 1));
* normals.Add(-direct * feature_info.cir.cir_plane.normal);
*
* vertices.Add(feature_info.cir.center + length * feature_info.cir.cir_plane.normal);
* uvs.Add(new Vector2(0.5f, 0.5f));
* normals.Add(direct * feature_info.cir.cir_plane.normal);
*
* //
*
* //direction: 1-positive, -1 -negative
* if (direct == 1)
* {
* for (int i = 0; i < segments; i++)
* {
* triangles.Add(2 * segments);
* if (i + 1 != segments)
* {
* triangles.Add(i + 1);
* }
* else
* {
* triangles.Add(0);
* }
* triangles.Add(i);
* }
*
* for (int i = 0; i < segments; i++)
* {
* triangles.Add(2 * segments + 1);
* triangles.Add(segments + i);
*
* if (i + 1 != segments)
* {
* triangles.Add(segments + i + 1);
* }
* else
* {
* triangles.Add(segments);
* }
*
*
*
* }
* }
* else
* {
* for (int i = 0; i < segments; i++)
* {
* triangles.Add(2 * segments);
* triangles.Add(i);
* if (i + 1 != segments)
* {
* triangles.Add(i + 1);
* }
* else
* {
* triangles.Add(0);
* }
*
* }
*
* for (int i = 0; i < segments; i++)
* {
* triangles.Add(segments + i);
* triangles.Add(2 * segments + 1);
*
*
* if (i + 1 != segments)
* {
* triangles.Add(segments + i + 1);
* }
* else
* {
* triangles.Add(segments);
* }
*
*
*
* }
* }
*
*
* }
* }
*
* void GenerateSide(List<Vector3> vertices, List<Vector2> uvs, List<Vector3> normals, List<int> triangles)
* {
* if (feature_info.s_feature == 1)//rectangle
* {
* for(int i = 0; i < 4; i++)
* {
* if (i != 3)
* {
* vertices.Add(vertices[i]);
* vertices.Add(vertices[i + 1]);
* vertices.Add(vertices[i + 4]);
* vertices.Add(vertices[i + 1 + 4]);
*
* uvs.Add(new Vector2(0.0f, 0.0f));
* uvs.Add(new Vector2(1.0f, 0.0f));
* uvs.Add(new Vector2(1.0f, 1.0f));
* uvs.Add(new Vector2(0.0f, 1.0f));
*
* Vector3 tot_normal = Vector3.Cross(vertices[i + 1] - vertices[i], vertices[i + 4] - vertices[i]);
* normals.Add(tot_normal);
* normals.Add(tot_normal);
* normals.Add(tot_normal);
* normals.Add(tot_normal);
*
* //direction: 1-positive, -1 -negative
* if (direct == 1)
* {
* triangles.Add(10 + i * 4);
* triangles.Add(10 + i * 4 + 2);
* triangles.Add(10 + i * 4 + 1);
*
*
* triangles.Add(10 + i * 4 + 2);
* triangles.Add(10 + i * 4 + 3);
* triangles.Add(10 + i * 4 + 1);
* }
* else
* {
* triangles.Add(10 + i * 4);
* triangles.Add(10 + i * 4 + 1);
* triangles.Add(10 + i * 4 + 2);
*
*
* triangles.Add(10 + i * 4 + 2);
* triangles.Add(10 + i * 4 + 1);
* triangles.Add(10 + i * 4 + 3);
* }
*
*
* }
*
* else
* {
* vertices.Add(vertices[i]);
* vertices.Add(vertices[0]);
* vertices.Add(vertices[i + 4]);
* vertices.Add(vertices[0+ 4]);
*
* uvs.Add(new Vector2(0.0f, 0.0f));
* uvs.Add(new Vector2(1.0f, 0.0f));
* uvs.Add(new Vector2(1.0f, 1.0f));
* uvs.Add(new Vector2(0.0f, 1.0f));
*
* Vector3 tot_normal = Vector3.Cross(vertices[0] - vertices[i], vertices[i + 4] - vertices[i]);
* normals.Add(tot_normal);
* normals.Add(tot_normal);
* normals.Add(tot_normal);
* normals.Add(tot_normal);
*
* //direction: 1-positive, -1 -negative
* if (direct == 1)
* {
* triangles.Add(10 + i * 4);
* triangles.Add(10 + i * 4 + 2);
* triangles.Add(10 + i * 4 + 1);
*
*
* triangles.Add(10 + i * 4 + 2);
* triangles.Add(10 + i * 4 + 3);
* triangles.Add(10 + i * 4 + 1);
* }
* else
* {
* triangles.Add(10 + i * 4);
*
* triangles.Add(10 + i * 4 + 1);
* triangles.Add(10 + i * 4 + 2);
*
*
* triangles.Add(10 + i * 4 + 2);
*
* triangles.Add(10 + i * 4 + 1);
* triangles.Add(10 + i * 4 + 3);
* }
*
*
* }
*
* }
*
*
* }
* else if (feature_info.s_feature == 2)
* {
* int segments = 60;
* Vector3 temp;
*
* float angle = 0.0f;
*
* //bottom
* for (int i = 0; i < (segments); i++)
* {
* temp = feature_info.cir.center + Mathf.Cos(Mathf.Deg2Rad * angle) * feature_info.cir.radius.x * feature_info.cir.cir_plane.u + Mathf.Sin(Mathf.Deg2Rad * angle) * feature_info.cir.radius.y * feature_info.cir.cir_plane.v;
* vertices.Add(temp);
* uvs.Add(new Vector2((float)i / (segments - 1), 0.0f));
* normals.Add(Mathf.Cos(Mathf.Deg2Rad * angle) * feature_info.cir.cir_plane.u + Mathf.Sin(Mathf.Deg2Rad * angle) * feature_info.cir.cir_plane.v);
*
* angle += (360f / segments);
* }
* //top
* angle = 0.0f;
* for (int i = 0; i < (segments); i++)
* {
* temp = feature_info.cir.center + Mathf.Cos(Mathf.Deg2Rad * angle) * feature_info.cir.radius.x * feature_info.cir.cir_plane.u + Mathf.Sin(Mathf.Deg2Rad * angle) * feature_info.cir.radius.y * feature_info.cir.cir_plane.v;
* temp = temp + +length * feature_info.cir.cir_plane.normal;
* vertices.Add(temp);
* uvs.Add(new Vector2((float)i / (segments - 1), 1.0f));
* normals.Add(Mathf.Cos(Mathf.Deg2Rad * angle) * feature_info.cir.cir_plane.u + Mathf.Sin(Mathf.Deg2Rad * angle) * feature_info.cir.cir_plane.v);
*
* angle += (360f / segments);
* }
*
* //direction: 1-positive, -1 -negative
* if (direct == 1)
* {
* for (int i = 0; i < (segments); i++)
* {
* triangles.Add(i +2*(segments+1));
* if (i + 1 != segments)
* {
* triangles.Add(i + 1 + 2 * (segments + 1));
* }
* else
* {
* triangles.Add(0 + 2 * (segments + 1));
* }
* triangles.Add(i + segments + 2 * (segments + 1));
*
* if (i + 1 != segments)
* {
* triangles.Add(i + 1 + 2 * (segments + 1));
* triangles.Add(i + 1 + segments + 2 * (segments + 1));
* }
* else
* {
* triangles.Add(0 + 2 * (segments + 1));
* triangles.Add(0 + segments + 2 * (segments + 1));
* }
*
* triangles.Add(i + segments + 2 * (segments + 1));
* }
* }
* else
* {
* for (int i = 0; i < (segments); i++)
* {
*
* if (i + 1 != segments)
* {
* triangles.Add(i + 1 + 2 * (segments + 1));
* }
* else
* {
* triangles.Add(0 + 2 * (segments + 1));
* }
* triangles.Add(i + 2 * (segments + 1));
* triangles.Add(i + segments + 2 * (segments + 1));
*
* if (i + 1 != segments)
* {
*
* triangles.Add(i + 1 + segments + 2 * (segments + 1));
* triangles.Add(i + 1 + 2 * (segments + 1));
* }
* else
* {
*
* triangles.Add(0 + segments + 2 * (segments + 1));
* triangles.Add(0 + 2 * (segments + 1));
* }
*
* triangles.Add(i + segments + 2 * (segments + 1));
* }
* }
*
*
* }
* }
*
*/
Vector3[] calculate_position(line_def sketch)
{
Vector3[] pos;
if (sketch.type == 0) //rectangle
{
pos = new Vector3[4];
pos[0] = sketch.center - sketch.plane.u * sketch.radius.x + sketch.plane.v * sketch.radius.y;
pos[1] = sketch.center - sketch.plane.u * sketch.radius.x - sketch.plane.v * sketch.radius.y;
pos[2] = sketch.center + sketch.plane.u * sketch.radius.x - sketch.plane.v * sketch.radius.y;
pos[3] = sketch.center + sketch.plane.u * sketch.radius.x + sketch.plane.v * sketch.radius.y;
}
else //circle: sketch.type == 1
{
int segments = 60;
pos = new Vector3[segments];
Vector3 temp;
float angle = 0.0f;
for (int i = 0; i < (segments); i++)
{
temp = sketch.center + Mathf.Cos(Mathf.Deg2Rad * angle) * sketch.radius.x * sketch.plane.u + Mathf.Sin(Mathf.Deg2Rad * angle) * sketch.radius.y * sketch.plane.v;
pos[segments - i - 1] = temp;
angle += (360f / segments);
}
}
return(pos);
}
void bottom(line_def sketch, float length, List <Vector3> vertices, List <Vector2> uvs, List <Vector3> normals, List <int> triangles, List <face_def> faces)
{
Vector3[] pos = calculate_position(sketch);
vertices.Add(sketch.center);
uvs.Add(new Vector2(0.5f, 0.5f));
normals.Add(-sketch.plane.normal);
for (int i = 0; i < 4; i++)
{
vertices.Add(pos[i]);
normals.Add(-sketch.plane.normal);
}
uvs.Add(new Vector2(0.0f, 0.0f));
uvs.Add(new Vector2(1.0f, 0.0f));
uvs.Add(new Vector2(1.0f, 1.0f));
uvs.Add(new Vector2(0.0f, 1.0f));
triangles.Add(0); triangles.Add(1); triangles.Add(2);
triangles.Add(0); triangles.Add(2); triangles.Add(3);
triangles.Add(0); triangles.Add(3); triangles.Add(4);
triangles.Add(0); triangles.Add(4); triangles.Add(1);
return;
}
Mesh Build(line_def parent, float length, List <face_def> faces)
{
var mesh = new Mesh(); // total mesh;
var vertices = new List <Vector3>();
var normals = new List <Vector3>();
var uvs = new List <Vector2>();
var triangles = new List <int>();
top_bottom(parent, length, vertices, uvs, normals, triangles, faces);
//side(parent, length, vertices, uvs, normals, triangles, faces);
//create top, bottom face: GenerateCap
//GenerateCap(vertices, uvs, normals, triangles);
// GenerateSide(vertices, uvs, normals, triangles);
//making mesh
//total mesh
info.text = "v:" + vertices.Count + " uv:" + uvs.Count + " n:" + normals.Count + " t:" + triangles.Count;
mesh.vertices = vertices.ToArray();
mesh.uv = uvs.ToArray();
mesh.normals = normals.ToArray();
mesh.triangles = triangles.ToArray();
mesh.RecalculateBounds();
return(mesh);
}
void side(line_def sketch, float length, List <Vector3> vertices, List <Vector2> uvs, List <Vector3> normals, List <int> triangles)
{
Vector3[] pos = calculate_position(sketch);
int direct = 1; //positive
if (length < 0)
{
direct = -1; //negative
}
int current = vertices.Count; //until top, bottom
Vector3 add = sketch.plane.normal * length;
for (int i = 0; i < pos.Length; i++)
{
//normals
Vector3 tot_normal;
if (i + 1 == pos.Length)
{
tot_normal = Vector3.Normalize(Vector3.Cross((pos[i] + add) - pos[i], pos[0] - pos[i]));
}
else
{
tot_normal = Vector3.Normalize(Vector3.Cross((pos[i] + add) - pos[i], pos[i + 1] - pos[i]));
}
//extrusion direction
if (direct == 1)
{
//vertices
vertices.Add(pos[i]);
if (i + 1 == pos.Length)
{
vertices.Add(pos[0]);
vertices.Add(pos[0] + add);
}
else
{
vertices.Add(pos[i + 1]);
vertices.Add(pos[i + 1] + add);
}
vertices.Add(pos[i] + add);
}
else
{
//vertices
vertices.Add(pos[i]);
vertices.Add(pos[i] + add);
if (i + 1 == pos.Length)
{
vertices.Add(pos[0] + add);
vertices.Add(pos[0]);
}
else
{
vertices.Add(pos[i + 1] + add);
vertices.Add(pos[i + 1]);
}
//normal change
tot_normal = -tot_normal;
}
//uvs
uvs.Add(new Vector2(0.0f, 0.0f));
uvs.Add(new Vector2(1.0f, 0.0f));
uvs.Add(new Vector2(1.0f, 1.0f));
uvs.Add(new Vector2(0.0f, 1.0f));
//normals
normals.Add(tot_normal);
normals.Add(tot_normal);
normals.Add(tot_normal);
normals.Add(tot_normal);
//side mesh and triangles
triangles.Add(current + i * 4);
triangles.Add(current + 1 + i * 4);
triangles.Add(current + 3 + i * 4);
triangles.Add(current + 1 + i * 4);
triangles.Add(current + 2 + i * 4);
triangles.Add(current + 3 + i * 4);
}
return;
}
void top_bottom(line_def sketch, float length, List <Vector3> vertices, List <Vector2> uvs, List <Vector3> normals, List <int> triangles, List <face_def> faces)
{
int current = 0;
//vertices and uv.
Vector3[] pos = calculate_position(sketch);
int direct = 1; //positive
if (length < 0)
{
direct = -1; //negative
}
//bottom
vertices.Add(sketch.center);
uvs.Add(new Vector2(0.5f, 0.5f));
normals.Add(-direct * sketch.plane.normal);
//normals.Add(-sketch.plane.normal);
for (int i = 0; i < pos.Length; i++)
{
vertices.Add(pos[i]);
uvs.Add(new Vector2(0.0f, 0.0f));
normals.Add(-direct * sketch.plane.normal);
//normals.Add(-sketch.plane.normal);
}
// face_def bottom = new face_def();
// bottom.plane = sketch.plane;
// bottom.plane.normal *= -direct;
for (int i = 0; i < pos.Length; i++)
{
if (direct == 1)
{
triangles.Add(0); //bottom center
//bottom.triangles.Add(0);
triangles.Add(i + 1);
//bottom.triangles.Add(i+1);
if (i + 1 == pos.Length)
{
triangles.Add(0 + 1);
//bottom.triangles.Add(0 + 1);
}
else
{
triangles.Add(i + 2);
//bottom.triangles.Add(i + 2);
}
}
else
{
triangles.Add(0); //bottom center
//bottom.triangles.Add(0);
if (i + 1 == pos.Length)
{
triangles.Add(0 + 1);
//bottom.triangles.Add(0 + 1);
}
else
{
triangles.Add(i + 2);
// bottom.triangles.Add(i + 2);
}
triangles.Add(i + 1);
//bottom.triangles.Add(i+1);
}
}
//faces.Add(bottom);
current = vertices.Count;
//top
Vector3 add = sketch.plane.normal * length;
vertices.Add(sketch.center + add);
uvs.Add(new Vector2(0.5f, 0.5f));
normals.Add(direct * sketch.plane.normal);
for (int i = 0; i < pos.Length; i++)
{
vertices.Add(pos[i] + add);
uvs.Add(new Vector2(0.0f, 0.0f));
normals.Add(direct * sketch.plane.normal);
}
for (int i = 0 + current; i < pos.Length + current; i++)
{
if (direct == 1)
{
triangles.Add(current); //top center
if (i + 1 == pos.Length + current)
{
triangles.Add(current + 1);
}
else
{
triangles.Add(i + 2);
}
triangles.Add(i + 1);
}
else
{
triangles.Add(current); //top center
triangles.Add(i + 1);
if (i + 1 == pos.Length + current)
{
triangles.Add(current + 1);
}
else
{
triangles.Add(i + 2);
}
}
}
return;
}