public static Vector3 SculptMesh(Vector3 aVert, Vector3 aNormal, IP_BrushData brushData, float aFalloff)
{
switch (brushData.sculptState)
{
case IP_SculptState.NormalDir:
//Normal direction displacement
aVert += (aNormal * (brushData.opacity * brushData.sculptIntensity) * 0.1f * aFalloff) * (float)brushData.sculptDir;
break;
case IP_SculptState.WorldUpDir:
aVert += (Vector3.up * (brushData.opacity * brushData.sculptIntensity) * 0.1f * aFalloff) * (float)brushData.sculptDir;
break;
case IP_SculptState.Flatten:
aVert = new Vector3(aVert.x, brushData.startHeight, aVert.z);
break;
default:
break;
}
return(aVert);
}
public static Color PaintMesh(Color aColor, IP_BrushData brushData, float aFalloff)
{
aColor = Color.Lerp(aColor, brushData.brushColor, (brushData.opacity * aFalloff) * 0.1f);
return(aColor);
}
public static void HandleBrush(GameObject aGO, Mesh aMesh, Vector3 brushPos, IP_BrushData brushData, IP_VTXPainterState aState)
{
if (aGO && aMesh)
{
Vector3[] verts = aMesh.vertices;
Vector3[] normals = aMesh.normals;
//Check to see if the Object has colors
Color[] colors = new Color[aMesh.vertexCount];
if (aMesh.colors.Length > 0)
{
colors = aMesh.colors;
}
else
{
for (int i = 0; i < aMesh.vertexCount; i++)
{
colors[i] = Color.black;
}
}
//process the brush action
for (int i = 0; i < verts.Length; i++)
{
float mag = (aGO.transform.TransformPoint(verts[i]) - brushPos).magnitude;
if (mag > brushData.brushSize)
{
continue;
}
//Get Falloff
float curFalloff = 1f;
if (mag > brushData.falloffSize)
{
curFalloff = (brushData.brushSize / mag) * 0.1f;
}
switch (aState)
{
case IP_VTXPainterState.Sculpting:
verts[i] = SculptMesh(verts[i], normals[i], brushData, curFalloff);
break;
case IP_VTXPainterState.Painting:
colors[i] = PaintMesh(colors[i], brushData, curFalloff);
break;
default:
break;
}
//Draw Some Handles
Handles.color = Color.yellow;
}
//Handle any clean up we need
switch (aState)
{
case IP_VTXPainterState.Sculpting:
aMesh.vertices = verts;
aMesh.RecalculateBounds();
aMesh.RecalculateNormals();
break;
case IP_VTXPainterState.Painting:
aMesh.colors = colors;
break;
default:
break;
}
}
}