void ApplyBrush(DisplaceableSurface origin, RaycastHit rayHit, List <DisplaceableSurface> canvases)
{
// draw strokes
foreach (var canvas in canvases)
{
Vector2 uv = rayHit.textureCoord;
// adjust texture coordinates
if (origin != canvas)
{
Vector3 dv = canvas.bounds.min - origin.bounds.min;
uv.x -= dv.x / sliceSize.x;
uv.y -= dv.z / sliceSize.y;
}
// actual brush drawing
canvas.ApplyBrush(uv, brushMaterial, brushSize);
}
// DEBUG:
// Leave this instead of foreach to test edges stitching
//origin.ApplyBrush(rayHit.textureCoord, brushMaterial, brushSize);
// stitch the edges
StitchChain(canvases);
}
// Update is called once per frame
void Update()
{
// listen for mouse press
if (!Input.GetKey(KeyCode.Mouse0))
{
return;
}
// ray casting towards mesh
RaycastHit rayHit;
if (!Physics.Raycast(Camera.allCameras[0].ScreenPointToRay(Input.mousePosition), out rayHit))
{
return;
}
// origin
DisplaceableSurface origin = rayHit.transform.gameObject.GetComponent <DisplaceableSurface>();
if (null == origin)
{
return;
}
// distance check to add neighboring surfaces
float checkDistance = brushSize * brushSize;
List <DisplaceableSurface> toDraw = new List <DisplaceableSurface>();
toDraw.Add(origin);
foreach (var surface in surfaces)
{
if (surface == origin)
{
continue;
}
var distance = surface.bounds.SqrDistance(rayHit.point);
if (distance <= checkDistance)
{
toDraw.Add(surface);
}
}
// draw
ApplyBrush(origin, rayHit, toDraw);
}
void OnWizardCreate()
{
// pre-compute some data
int xTextures = Mathf.CeilToInt(totalWidth * texelsPerWorldUnit / textureSize);
int zTextures = Mathf.CeilToInt(totalLength * texelsPerWorldUnit / textureSize);
float segmentWidth = totalWidth / xTextures;
float segmentLength = totalLength / zTextures;
int xVerticiesPerSegment = Math.Max(2, Mathf.CeilToInt(segmentWidth / geometryResolution));
int zVerticiesPerSegment = Math.Max(2, Mathf.CeilToInt(segmentLength / geometryResolution));
// root object
GameObject surfaceChain = new GameObject();
surfaceChain.transform.position = Vector3.zero;
string surfaceName = optionalName;
if (string.IsNullOrEmpty(surfaceName))
{
surfaceName = "Surface Chain";
}
surfaceName += " (" + xTextures + " x " + zTextures + " )";
surfaceChain.name = surfaceName;
// prepare mesh
Mesh mesh = CreateBaseMesh("Plane", xVerticiesPerSegment, zVerticiesPerSegment, segmentWidth, segmentLength);
// make grid
var grid = new DisplaceableSurface[xTextures, zTextures];
for (int z = 0; z < zTextures; ++z)
{
for (int x = 0; x < xTextures; ++x)
{
GameObject slice = new GameObject();
slice.name = "Slice (" + x.ToString() + ", " + z.ToString() + ")";
slice.isStatic = staticSlices;
// add mesh and renderer
var meshFilter = slice.AddComponent <MeshFilter>();
meshFilter.sharedMesh = mesh;
var renderer = slice.AddComponent <MeshRenderer>();
renderer.material = surfaceMaterial;
// surface
var script = slice.AddComponent <DisplaceableSurface>();
script.textureFormat = textureFormat;
script.maximumTextureSize = textureSize;
// collider
var collider = slice.AddComponent <MeshCollider>();
// save item and push to the parent
grid[x, z] = script;
slice.transform.parent = surfaceChain.transform;
slice.transform.position = Vector3.zero;
slice.transform.localPosition = new Vector3(x * mesh.bounds.size.x, 0, z * mesh.bounds.size.z);
}
}
// link items on the grid
for (int z = 0; z < zTextures - 1; ++z)
{
for (int x = 1; x < xTextures; ++x)
{
var current = grid[x, z];
var left = grid[x - 1, z];
var top = grid[x, z + 1];
current.leftNeighbour = left;
current.topNeighbour = top;
}
}
// manager
var manager = surfaceChain.AddComponent <SurfaceChainManager>();
// done
Selection.activeObject = surfaceChain;
}