public void GenerateMesh()
{
Vector3[] vertices = new Vector3[resolution * resolution];
int[] triangles = new int[((resolution - 1) * (resolution - 1)) * 6]; // this is the number of verticies on the triangles
int triIndex = 0;
for (int y = 0; y < resolution; y++)
{
for (int x = 0; x < resolution; x++)
{
Vector2 percent = new Vector2(x, y) / (resolution - 1); // how close to complete each of the loops are
Vector3 pointOnUnitCube =
normalVector + (percent.x - 0.5f) * 2 * axisA +
(percent.y - 0.5f) * 2 * axisB; // like a unit circle, but it is the world cube
Vector3 pointOnUnitSphere = pointOnUnitCube.normalized;
var i = y * resolution + x;
// vertices[i] = pointOnUnitCube; // generates a cube
// vertices[i] = pointOnUnitSphere; // generates a sphere
vertices[i] = shapeGenerator.CalcPointOnPlanet(pointOnUnitSphere); // generates sphere with radius
// this will prevent us from counting triangles 1 to the right, and below the mesh
if (x != resolution - 1 && y != resolution - 1)
{
// these are the triangles that are part of the square on the mesh we are looking at
// triangle 1
triangles[triIndex] = i;
triangles[triIndex + 1] = i + resolution + 1;
triangles[triIndex + 2] = i + resolution;
// triangle 2
triangles[triIndex + 3] = i;
triangles[triIndex + 4] = i + 1;
triangles[triIndex + 5] = i + resolution + 1;
triIndex += 6;
}
}
}
mesh.Clear(); // when vertices are mapped at lower res, the triangles have incorrect indexing, unless cleared
mesh.vertices = vertices;
mesh.triangles = triangles;
mesh.RecalculateNormals();
}
public void ConstructMesh()
{
Vector3[] vertices = new Vector3[resolution * resolution];
int[] triangles = new int[(resolution - 1) * (resolution - 1) * 6]; // (r-1)^2 * 2 * 3
int triIndex = 0;
Vector2[] uv = mesh.uv;
for (int y = 0; y < resolution; y++)
{
for (int x = 0; x < resolution; x++)
{
int i = x + (y * resolution);
Vector2 percent = new Vector2(x, y) / (resolution - 1);
Vector3 locationOnCube = localUp + (percent.x - .5f) * 2 * axisA + (percent.y - .5f) * 2 * axisB;
Vector3 locationOnSphere = locationOnCube.normalized;
vertices[i] = shapeGenerator.CalcPointOnPlanet(locationOnSphere);
if (x != resolution - 1 && y != resolution - 1)
{
triangles[triIndex] = i;
triangles[triIndex + 1] = i + resolution + 1;
triangles[triIndex + 2] = i + resolution;
triangles[triIndex + 3] = i;
triangles[triIndex + 4] = i + 1;
triangles[triIndex + 5] = i + resolution + 1;
triIndex += 6;
}
}
}
mesh.Clear();
mesh.vertices = vertices;
mesh.triangles = triangles;
mesh.RecalculateNormals();
mesh.uv = uv;
}
