public void ConstructMesh()
{
Vector3[] vertices = new Vector3[resolution * resolution];
int[] triangles = new int[((resolution - 1) * (resolution - 1)) * 6];
int triIndex = 0;
for (int y = 0; y < resolution; y++)
{
for (int x = 0; x < resolution; x++)
{
int i = x + (y * resolution); // to get vertices index
Vector2 percent = new Vector2(x, y) / (resolution - 1); // tell us how near we are to complete the loop ,to define were the vertics should be along the face
Vector3 pointOnUnitCube = localUP + (percent.x - 0.5f) * 2 * axisA + (percent.y - 0.5f) * 2 * axisB; // (percent.x - 0.5f) * 2 = will give us a value between (-1,1)
Vector3 pointOnUnitSphere = pointOnUnitCube.normalized; // will change from cube to sphere to make vertices from the same distance from the center
vertices[i] = shapeGenerator.PointOnUnitPlanet(pointOnUnitSphere); // when we change planet radius
if (x != resolution - 1 && y != resolution - 1) // || not percent equal to one
{
triangles[triIndex] = i; // for first triangle in quad
triangles[triIndex + 1] = i + resolution + 1;
triangles[triIndex + 2] = i + resolution;
triangles[triIndex + 3] = i; // secont triangele in quad
triangles[triIndex + 4] = i + 1;
triangles[triIndex + 5] = i + resolution + 1;
triIndex += 6;
}
}
}
mesh.Clear(); // clear all vertices and triangles to ovoid any problems when we change the resolution
mesh.vertices = vertices;
mesh.triangles = triangles;
mesh.RecalculateNormals(); // recalculate normals for new triangles
}
