public static Mesh GenerateBoxMesh(Settings settings, Vector3 shift)
{
var mesh = new MeshGenerator("Box");
var size = settings.Size * 0.5f;
mesh.AddQuad(
new Vector3(-size.x, +size.y, +size.z) + shift,
new Vector3(+size.x, +size.y, +size.z) + shift,
new Vector3(+size.x, +size.y, -size.z) + shift,
new Vector3(-size.x, +size.y, -size.z) + shift,
Vector3.up);
mesh.AddQuad(
new Vector3(+size.x, -size.y, +size.z) + shift,
new Vector3(-size.x, -size.y, +size.z) + shift,
new Vector3(-size.x, -size.y, -size.z) + shift,
new Vector3(+size.x, -size.y, -size.z) + shift,
Vector3.down);
mesh.AddQuad(
new Vector3(+size.x, +size.y, -size.z) + shift,
new Vector3(+size.x, +size.y, +size.z) + shift,
new Vector3(+size.x, -size.y, +size.z) + shift,
new Vector3(+size.x, -size.y, -size.z) + shift,
Vector3.right);
mesh.AddQuad(
new Vector3(-size.x, +size.y, +size.z) + shift,
new Vector3(-size.x, +size.y, -size.z) + shift,
new Vector3(-size.x, -size.y, -size.z) + shift,
new Vector3(-size.x, -size.y, +size.z) + shift,
Vector3.down);
mesh.AddQuad(
new Vector3(+size.x, -size.y, +size.z) + shift,
new Vector3(+size.x, +size.y, +size.z) + shift,
new Vector3(-size.x, +size.y, +size.z) + shift,
new Vector3(-size.x, -size.y, +size.z) + shift,
Vector3.forward);
mesh.AddQuad(
new Vector3(+size.x, +size.y, -size.z) + shift,
new Vector3(+size.x, -size.y, -size.z) + shift,
new Vector3(-size.x, -size.y, -size.z) + shift,
new Vector3(-size.x, +size.y, -size.z) + shift,
Vector3.back);
return(mesh.Generate());
}
public static Mesh GeneratePrysmMesh(Settings settings, Vector3 shift)
{
var mesh = new MeshGenerator("Prysm");
int segments = settings.edgeCount;
float startAngle = settings.startAngle / 180f * Mathf.PI;
Vector3[] sideNormals = new Vector3[segments + 1];
Vector3[] topPoints = new Vector3[segments + 1];
Vector3[] bottomPoints = new Vector3[segments + 1];
for (int i = 0; i < topPoints.Length; i++)
{
float angleInRad = 2f * Mathf.PI / (float)segments * (float)i + startAngle;
float angleOfNormalInRad;
if (settings.smoothNormals)
{
angleOfNormalInRad = 2f * Mathf.PI / (float)segments * (float)(i) + startAngle;
}
else
{
angleOfNormalInRad = 2f * Mathf.PI / (float)segments * (float)(i + 0.5f) + startAngle;
}
topPoints[i] = new Vector3(Mathf.Sin(angleInRad), 0, Mathf.Cos(angleInRad)) * settings.radius + shift;
bottomPoints[i] = topPoints[i] + new Vector3(0, -settings.depth);
sideNormals[i] = new Vector3(Mathf.Sin(angleOfNormalInRad), 0, Mathf.Cos(angleOfNormalInRad));
}
Vector3 topCenter = shift;
Vector3 bottomCenter = shift + new Vector3(0, -settings.depth);
for (int i = 0; i < segments; i++)
{
mesh.AddTriangle(topCenter, topPoints[i], topPoints[i + 1]);
}
if (settings.depth != 0)
{
for (int i = 0; i < segments; i++)
{
if (settings.smoothNormals)
{
mesh.AddQuad(
topPoints[i + 1],
topPoints[i],
bottomPoints[i],
bottomPoints[i + 1],
sideNormals[i + 1],
sideNormals[i],
sideNormals[i],
sideNormals[i + 1]
);
}
else
{
mesh.AddQuad(
topPoints[i + 1],
topPoints[i],
bottomPoints[i],
bottomPoints[i + 1],
sideNormals[i]
);
}
}
}
for (int i = 0; i < segments; i++)
{
mesh.AddTriangle(bottomCenter, bottomPoints [i + 1], bottomPoints [i]);
}
return(mesh.Generate());
}
