/// <summary>
/// Creates 2D mesh in a plane
/// </summary>
/// <param name="plane"></param>
/// <param name="cameraUpVector"></param>
public void Tessalate2DMesh(Plane plane, Vector3 cameraUpVector)
{
int xVertices = XSegments + 1;
int yVertices = YSegments + 1;
Vector3[] vertices = new Vector3[xVertices * yVertices];
Vector3[] normals = new Vector3[vertices.Length];
Vector3 meshZAxis = plane.normal;
Vector3 meshXAxis = Vector3.Cross(cameraUpVector, meshZAxis);
// check just in case that cameraUpVector and planeNormal are not parallel
if (meshXAxis.magnitude == 0)
throw new Exception("The mesh up vector cannot be parallel to the plane normal.");
float xSpace = Width / /*(float)*/XSegments;
float ySpace = Height / /*(float)*/YSegments;
float halfWidth = Width / 2;
float halfHeight = Height / 2;
int count = 0;
/**
* GetEaser vertices in local space
* */
for (int y = 0; y < yVertices; y++)
{
for (int x = 0; x < xVertices; x++)
{
float xCoord = x * xSpace;
float yCoord = y * ySpace;
vertices[count] = new Vector3(xCoord - halfWidth, yCoord - halfHeight);
count++;
}
}
/**
* Transform vertices to global space
* */
// set transformation matrix
Matrix4x4 transform = Matrix4x4.identity;
transform.m00 = meshXAxis.x;
transform.m01 = meshXAxis.y;
transform.m02 = meshXAxis.z;
//transform.m03 = 1;
transform.m10 = cameraUpVector.x;
transform.m11 = cameraUpVector.y;
transform.m12 = cameraUpVector.z;
//transform.m13 = 1;
transform.m20 = meshZAxis.x;
transform.m21 = meshZAxis.y;
transform.m22 = meshZAxis.z;
//transform.m23 = 1;
// add translation by plane distance (in the opoposite direction of plane normal)
transform = Matrix4x4.TRS(-plane.normal*plane.distance, Quaternion.identity, Vector3.one) * transform;
// transform vertices
int vertCount = vertices.Length;
for (int i = 0; i < vertCount; i++)
{
vertices[i] = transform.MultiplyPoint(vertices[i]);
normals[i] = plane.normal;
}
//Debug.Log("XSegments: " + XSegments + "; YSegments: " + YSegments);
//Debug.Log("vertices.Length: " + vertices.Length);
// indices (triangles)
int[] triangles = new int[6 * XSegments * YSegments];
//Debug.Log("triangles.Length: " + triangles.Length);
int vInc, uInc, v, u; //, iterations;
vInc = 1;
v = 0;
//iterations = doubleSided ? 2 : 1;
// make tris in a zigzag pattern (strip compatible)
u = 0;
uInc = 1;
int vCount = YSegments;
// reset count
count = 0;
while (0 < vCount--)
{
int uCount = XSegments;
while (0 < uCount--)
{
// first triangle in the cell
// -----------------
triangles[count++] = (short)(_lastVertexCount + ((v + vInc) * xVertices) + u);
triangles[count++] = (short)(_lastVertexCount + (v * xVertices) + u);
triangles[count++] = (short)(_lastVertexCount + ((v + vInc) * xVertices) + (u + uInc));
// second triangle in the cell
// ------------------
triangles[count++] = (short)(_lastVertexCount + ((v + vInc) * xVertices) + (u + uInc));
triangles[count++] = (short)(_lastVertexCount + (v * xVertices) + u);
triangles[count++] = (short)(_lastVertexCount + (v * xVertices) + (u + uInc));
// Next column
u += uInc;
//Debug.Log("***2. Count: " + count);
} // while uCount
v += vInc;
u = 0;
} // while vCount
//v = YSegments - 1;
//vInc = -vInc;
_vertices.AddRange(vertices);
_triangles.AddRange(triangles);
_normals.AddRange(normals);
/**
* GetEaser right UV generator
* */
IUvGenerator gene;
switch (UvMode)
{
case UvMode.Normal:
gene = new NormalUvGenerator();
break;
//case UvMode.Curved:
default:
gene = new CurvedIllusionPlaneUvGenerator();
break;
}
/**
* Calculate UV for each vertex
* */
//CurvedIllusionPlaneUvGenerator gene = new CurvedIllusionPlaneUvGenerator();
//NormalUvGenerator gene = new NormalUvGenerator();
_uv.AddRange(gene.CalculateUv(Width, Height, xVertices, yVertices));
//mesh.RecalculateNormals();
_lastVertexCount += vertices.Length;
//return mesh;
}
/// <summary>
/// Creates 2D mesh in a plane
/// </summary>
/// <param name="plane"></param>
/// <param name="cameraUpVector"></param>
public void Tessalate2DMesh(Plane plane, Vector3 cameraUpVector)
{
int xVertices = XSegments + 1;
int yVertices = YSegments + 1;
Vector3[] vertices = new Vector3[xVertices * yVertices];
Vector3[] normals = new Vector3[vertices.Length];
Vector3 meshZAxis = plane.normal;
Vector3 meshXAxis = Vector3.Cross(cameraUpVector, meshZAxis);
// check just in case that cameraUpVector and planeNormal are not parallel
if (meshXAxis.magnitude == 0)
{
throw new Exception("The mesh up vector cannot be parallel to the plane normal.");
}
float xSpace = Width / /*(float)*/ XSegments;
float ySpace = Height / /*(float)*/ YSegments;
float halfWidth = Width / 2;
float halfHeight = Height / 2;
int count = 0;
/**
* GetEaser vertices in local space
* */
for (int y = 0; y < yVertices; y++)
{
for (int x = 0; x < xVertices; x++)
{
float xCoord = x * xSpace;
float yCoord = y * ySpace;
vertices[count] = new Vector3(xCoord - halfWidth, yCoord - halfHeight);
count++;
}
}
/**
* Transform vertices to global space
* */
// set transformation matrix
Matrix4x4 transform = Matrix4x4.identity;
transform.m00 = meshXAxis.x;
transform.m01 = meshXAxis.y;
transform.m02 = meshXAxis.z;
//transform.m03 = 1;
transform.m10 = cameraUpVector.x;
transform.m11 = cameraUpVector.y;
transform.m12 = cameraUpVector.z;
//transform.m13 = 1;
transform.m20 = meshZAxis.x;
transform.m21 = meshZAxis.y;
transform.m22 = meshZAxis.z;
//transform.m23 = 1;
// add translation by plane distance (in the opoposite direction of plane normal)
transform = Matrix4x4.TRS(-plane.normal * plane.distance, Quaternion.identity, Vector3.one) * transform;
// transform vertices
int vertCount = vertices.Length;
for (int i = 0; i < vertCount; i++)
{
vertices[i] = transform.MultiplyPoint(vertices[i]);
normals[i] = plane.normal;
}
//Debug.Log("XSegments: " + XSegments + "; YSegments: " + YSegments);
//Debug.Log("vertices.Length: " + vertices.Length);
// indices (triangles)
int[] triangles = new int[6 * XSegments * YSegments];
//Debug.Log("triangles.Length: " + triangles.Length);
int vInc, uInc, v, u; //, iterations;
vInc = 1;
v = 0;
//iterations = doubleSided ? 2 : 1;
// make tris in a zigzag pattern (strip compatible)
u = 0;
uInc = 1;
int vCount = YSegments;
// reset count
count = 0;
while (0 < vCount--)
{
int uCount = XSegments;
while (0 < uCount--)
{
// first triangle in the cell
// -----------------
triangles[count++] = (short)(_lastVertexCount + ((v + vInc) * xVertices) + u);
triangles[count++] = (short)(_lastVertexCount + (v * xVertices) + u);
triangles[count++] = (short)(_lastVertexCount + ((v + vInc) * xVertices) + (u + uInc));
// second triangle in the cell
// ------------------
triangles[count++] = (short)(_lastVertexCount + ((v + vInc) * xVertices) + (u + uInc));
triangles[count++] = (short)(_lastVertexCount + (v * xVertices) + u);
triangles[count++] = (short)(_lastVertexCount + (v * xVertices) + (u + uInc));
// Next column
u += uInc;
//Debug.Log("***2. Count: " + count);
} // while uCount
v += vInc;
u = 0;
} // while vCount
//v = YSegments - 1;
//vInc = -vInc;
_vertices.AddRange(vertices);
_triangles.AddRange(triangles);
_normals.AddRange(normals);
/**
* GetEaser right UV generator
* */
IUvGenerator gene;
switch (UvMode)
{
case UvMode.Normal:
gene = new NormalUvGenerator();
break;
//case UvMode.Curved:
default:
gene = new CurvedIllusionPlaneUvGenerator();
break;
}
/**
* Calculate UV for each vertex
* */
//CurvedIllusionPlaneUvGenerator gene = new CurvedIllusionPlaneUvGenerator();
//NormalUvGenerator gene = new NormalUvGenerator();
_uv.AddRange(gene.CalculateUv(Width, Height, xVertices, yVertices));
//mesh.RecalculateNormals();
_lastVertexCount += vertices.Length;
//return mesh;
}
