/// <summary>
/// Constructs a partial box with specified faces
/// </summary>
public static MeshDraft PartialBox(Vector3 width, Vector3 depth, Vector3 height, Directions parts, bool generateUV = true)
{
Vector3 v000 = -width / 2 - depth / 2 - height / 2;
Vector3 v001 = v000 + height;
Vector3 v010 = v000 + width;
Vector3 v011 = v000 + width + height;
Vector3 v100 = v000 + depth;
Vector3 v101 = v000 + depth + height;
Vector3 v110 = v000 + width + depth;
Vector3 v111 = v000 + width + depth + height;
var draft = new MeshDraft {
name = "Partial box"
};
if (generateUV)
{
Vector2 uv0 = new Vector2(0, 0);
Vector2 uv1 = new Vector2(0, 1);
Vector2 uv2 = new Vector2(1, 1);
Vector2 uv3 = new Vector2(1, 0);
if (parts.HasFlag(Directions.Left))
{
draft.AddQuad(v100, v101, v001, v000, true, uv0, uv1, uv2, uv3);
}
if (parts.HasFlag(Directions.Right))
{
draft.AddQuad(v010, v011, v111, v110, true, uv0, uv1, uv2, uv3);
}
if (parts.HasFlag(Directions.Down))
{
draft.AddQuad(v010, v110, v100, v000, true, uv0, uv1, uv2, uv3);
}
if (parts.HasFlag(Directions.Up))
{
draft.AddQuad(v111, v011, v001, v101, true, uv0, uv1, uv2, uv3);
}
if (parts.HasFlag(Directions.Back))
{
draft.AddQuad(v000, v001, v011, v010, true, uv0, uv1, uv2, uv3);
}
if (parts.HasFlag(Directions.Forward))
{
draft.AddQuad(v110, v111, v101, v100, true, uv0, uv1, uv2, uv3);
}
}
else
{
if (parts.HasFlag(Directions.Left))
{
draft.AddQuad(v100, v101, v001, v000, true);
}
if (parts.HasFlag(Directions.Right))
{
draft.AddQuad(v010, v011, v111, v110, true);
}
if (parts.HasFlag(Directions.Down))
{
draft.AddQuad(v010, v110, v100, v000, true);
}
if (parts.HasFlag(Directions.Up))
{
draft.AddQuad(v111, v011, v001, v101, true);
}
if (parts.HasFlag(Directions.Back))
{
draft.AddQuad(v000, v001, v011, v010, true);
}
if (parts.HasFlag(Directions.Forward))
{
draft.AddQuad(v110, v111, v101, v100, true);
}
}
return(draft);
}
/// <summary>
/// Constructs a flat revolution surface draft
/// </summary>
public static MeshDraft FlatRevolutionSurface(
Func <float, float, float, float, Vector3> surfaceFunction,
float radius,
float height,
int horizontalSegments,
int verticalSegments,
bool generateUV = true)
{
float horizontalSegmentAngle = 360f / horizontalSegments;
float verticalSegmentAngle = 180f / verticalSegments;
float currentVerticalAngle = -90;
int horizontalCount = horizontalSegments + 1;
var ringsVertices = new List <List <Vector3> >(verticalSegments);
var ringsUV = new List <List <Vector2> >(verticalSegments);
for (int y = 0; y <= verticalSegments; y++)
{
float currentHorizontalAngle = 0f;
var ringVertices = new List <Vector3>(horizontalCount);
var ringUV = new List <Vector2>(horizontalCount);
for (int x = 0; x <= horizontalSegments; x++)
{
var point = surfaceFunction(radius, height, currentHorizontalAngle, currentVerticalAngle);
ringVertices.Add(point);
if (generateUV)
{
ringUV.Add(new Vector2(1 - (float)x / horizontalSegments, (float)y / verticalSegments));
}
currentHorizontalAngle += horizontalSegmentAngle;
}
ringsVertices.Add(ringVertices);
ringsUV.Add(ringUV);
currentVerticalAngle += verticalSegmentAngle;
}
var draft = new MeshDraft {
name = "Flat revolution surface"
};
for (int y = 0; y < ringsVertices.Count - 1; y++)
{
var lowerRingVertices = ringsVertices[y];
var upperRingVertices = ringsVertices[y + 1];
var lowerRingUV = ringsUV[y];
var upperRingUV = ringsUV[y + 1];
for (int x = 0; x < horizontalSegments; x++)
{
Vector3 v00 = lowerRingVertices[x + 1];
Vector3 v01 = upperRingVertices[x + 1];
Vector3 v11 = upperRingVertices[x];
Vector3 v10 = lowerRingVertices[x];
Vector2 uv00 = lowerRingUV[x + 1];
Vector2 uv01 = upperRingUV[x + 1];
Vector2 uv11 = upperRingUV[x];
Vector2 uv10 = lowerRingUV[x];
draft.AddQuad(v00, v01, v11, v10, true, uv00, uv01, uv11, uv10);
}
}
return(draft);
}
