public override void ReadBlueprintPositions(ContourBlueprint blueprint)
{
// Read contour positions only (assumes only modification on contour is some point moved)
if (blueprint != null && blueprint is ContourMeshBlueprint && blueprint.material is ContourLineMaterial)
{
// Get positions
Vector2[] positions = blueprint.Positions;
// Check if blueprint matches reader mesh's length
int positionCount = positions != null ? positions.Length : 0;
int vertexCount = Vertices.Count;
if (vertexCount == positionCount * 2)
{
if (vertexCount > 0)
{
ContourLineMaterial contourMaterial = blueprint.material as ContourLineMaterial;
GenerateVertices(positions, contourMaterial.zOffset, contourMaterial.width);
GenerateUVs(positions, contourMaterial.uvScale);
}
}
else
{
throw new Exception("Blueprint and reader mismatch");
}
}
// Notify if there's a problem with the blueprint
else
{
throw new Exception("Can't read blueprint");
}
}
public override bool TryReadBlueprint(ContourBlueprint blueprint)
{
// Read if possible
if (blueprint != null && blueprint is ContourMeshBlueprint && blueprint.material is ContourLineMaterial)
{
ContourMeshBlueprint meshBlueprint = blueprint as ContourMeshBlueprint;
// Get positions
Vector2[] positions = blueprint.Positions;
if (positions == null)
{
return(false);
}
// Get material
ContourLineMaterial contourMaterial = blueprint.material as ContourLineMaterial;
if (contourMaterial == null)
{
return(false);
}
MeshMaterial = contourMaterial.meshMaterial;
// Check if enough points to build at least one segment
int positionCount = positions != null ? positions.Length : 0;
if (positionCount < 2)
{
Clear();
return(false);
}
// Set vertices: two vertices per point
int vertexCount = positionCount * 2;
Vertices = new List <Vector3>(new Vector3[vertexCount]);
GenerateVertices(positions, contourMaterial.zOffset, contourMaterial.width);
// Set triangles: one quad per segment, two triangles per quad
int quadCount = positionCount - 1;
Triangles = new List <int>(quadCount * 6);
for (int i = 0; i < quadCount; i++)
{
int q = i * 2;
// First half of a quad
Triangles.AddRange(new int[] { q, q + 1, q + 3 });
// Second half
Triangles.AddRange(new int[] { q, q + 3, q + 2 });
}
// Set normals: fetch value in blueprint
Normals = new List <Vector3>(vertexCount);
Vector3 normal = meshBlueprint.Normal;
for (int i = 0; i < vertexCount; i++)
{
Normals.Add(normal);
}
// Set uvs: repeat texture along segments
GenerateUVs(positions, contourMaterial.uvScale);
// Set colors: fetch value in blueprint
Color color = meshBlueprint.Color;
Colors = new List <Color>(vertexCount);
for (int i = 0; i < vertexCount; i++)
{
Colors.Add(color);
}
return(true);
}
// If not, return false
return(false);
}
