///////////////////////////////////////////////////////////////////////////////
// functions
///////////////////////////////////////////////////////////////////////////////
// ------------------------------------------------------------------
// Desc:
// ------------------------------------------------------------------
public void Build()
{
isDirty = false;
exPlaneBuilder editTarget = target as exPlaneBuilder;
// create new mesh
Mesh newMesh = new Mesh();
newMesh.name = "builtin-plane";
// init essential variables
float cellWidth = editTarget.size.x / (float)editTarget.col;
float cellHeight = editTarget.size.y / (float)editTarget.row;
float halfWidth = (float)editTarget.size.x / (float)2.0f;
float halfHeight = (float)editTarget.size.y / (float)2.0f;
float offsetX = 0.0f;
float offsetY = 0.0f;
int numVerts = (editTarget.col + 1) * (editTarget.row + 1);
//
Vector3[] verts = new Vector3[numVerts];
Vector3[] normals = new Vector3[numVerts];
Vector2[] uvs = new Vector2[numVerts];
Color[] colors = new Color[numVerts];
// calculate anchor offset
switch (editTarget.anchor)
{
case exPlaneBuilder.Anchor.TopLeft:
offsetX = -halfWidth;
offsetY = -halfHeight;
break;
case exPlaneBuilder.Anchor.TopCenter:
offsetX = 0.0f;
offsetY = -halfHeight;
break;
case exPlaneBuilder.Anchor.TopRight:
offsetX = halfWidth;
offsetY = -halfHeight;
break;
case exPlaneBuilder.Anchor.MidLeft:
offsetX = -halfWidth;
offsetY = 0.0f;
break;
case exPlaneBuilder.Anchor.MidCenter:
offsetX = 0.0f;
offsetY = 0.0f;
break;
case exPlaneBuilder.Anchor.MidRight:
offsetX = halfWidth;
offsetY = 0.0f;
break;
case exPlaneBuilder.Anchor.BotLeft:
offsetX = -halfWidth;
offsetY = halfHeight;
break;
case exPlaneBuilder.Anchor.BotCenter:
offsetX = 0.0f;
offsetY = halfHeight;
break;
case exPlaneBuilder.Anchor.BotRight:
offsetX = halfWidth;
offsetY = halfHeight;
break;
}
// build vertices
for (int r = 0; r < (editTarget.row + 1); ++r)
{
for (int c = 0; c < (editTarget.col + 1); ++c)
{
int i = r * (editTarget.col + 1) + c;
float x = -halfWidth + c * cellWidth;
float y = halfHeight - r * cellHeight;
// build verts, normals, and uvs
switch (editTarget.planeType)
{
case exPlaneBuilder.Plane.XY:
verts[i] = new Vector3(x - offsetX, y + offsetY, 0.0f);
normals[i] = new Vector3(0.0f, 0.0f, -1.0f);
break;
case exPlaneBuilder.Plane.XZ:
verts[i] = new Vector3(x - offsetX, 0.0f, y + offsetY);
normals[i] = new Vector3(0.0f, 1.0f, 0.0f);
break;
case exPlaneBuilder.Plane.ZY:
verts[i] = new Vector3(0.0f, y + offsetY, x - offsetX);
normals[i] = new Vector3(1.0f, 0.0f, 0.0f);
break;
}
// build uvs and colors
uvs[i] = new Vector2((x + halfWidth) / (float)editTarget.uvSize.x, (y + halfHeight) / (float)editTarget.uvSize.y);
colors[i] = Color.white;
}
}
newMesh.vertices = verts;
newMesh.uv = uvs;
newMesh.colors = colors;
newMesh.normals = normals;
// build indices
int numIndices = (editTarget.row) * (editTarget.col) * 6;
int[] indices = new int[numIndices];
for (int r = 0; r < editTarget.row; ++r)
{
for (int c = 0; c < editTarget.col; ++c)
{
int i = (r * editTarget.col + c) * 6;
indices[i] = r * (editTarget.col + 1) + c;
indices[i + 1] = r * (editTarget.col + 1) + (c + 1);
indices[i + 2] = (r + 1) * (editTarget.col + 1) + c;
indices[i + 3] = (r + 1) * (editTarget.col + 1) + c;
indices[i + 4] = r * (editTarget.col + 1) + (c + 1);
indices[i + 5] = (r + 1) * (editTarget.col + 1) + (c + 1);
}
}
newMesh.triangles = indices;
//
editTarget.GetComponent <MeshFilter>().sharedMesh = newMesh;
// if we have mesh collider, update it.
MeshCollider meshCol = editTarget.GetComponent <MeshCollider>();
if (meshCol)
{
meshCol.sharedMesh = newMesh;
}
// if we have box collider, update it.
BoxCollider boxCol = editTarget.GetComponent <BoxCollider>();
if (boxCol)
{
boxCol.center = Vector3.zero;
switch (editTarget.planeType)
{
case exPlaneBuilder.Plane.XY:
boxCol.size = new Vector3(editTarget.size.x, editTarget.size.y, 0.2f);
break;
case exPlaneBuilder.Plane.XZ:
boxCol.size = new Vector3(editTarget.size.x, 0.2f, editTarget.size.y);
break;
case exPlaneBuilder.Plane.ZY:
boxCol.size = new Vector3(0.2f, editTarget.size.y, editTarget.size.x);
break;
}
}
}
// ------------------------------------------------------------------
// Desc:
// ------------------------------------------------------------------
public override void OnInspectorGUI()
{
exPlaneBuilder editTarget = target as exPlaneBuilder;
EditorGUILayout.Space();
// check if we can build the mesh
if (editTarget.GetComponent <MeshRenderer>() == null ||
editTarget.GetComponent <MeshFilter>() == null)
{
GUIStyle style = new GUIStyle();
style.fontStyle = FontStyle.Bold;
style.normal.textColor = Color.red;
GUILayout.Label("Can't find MeshRenderer and MeshFilter in edit editTarget", style);
return;
}
// first time build.
if (editTarget.GetComponent <MeshFilter>().sharedMesh == null)
{
isDirty = true;
}
// size
Vector2 newSize = EditorGUILayout.Vector2Field("Size", editTarget.size);
if (newSize != editTarget.size)
{
if (newSize.x < 1.0f)
{
newSize.x = 1.0f;
}
if (newSize.y < 1.0f)
{
newSize.y = 1.0f;
}
editTarget.size = newSize;
isDirty = true;
}
EditorGUIUtility.LookLikeInspector();
EditorGUI.indentLevel = 1;
// col
// EditorGUILayout.BeginHorizontal();
int newCol = EditorGUILayout.IntField("Col", editTarget.col);
if (newCol != editTarget.col)
{
if (newCol < 1)
{
newCol = 1;
}
editTarget.col = newCol;
isDirty = true;
}
// row
int newRow = EditorGUILayout.IntField("Row", editTarget.row);
if (newRow != editTarget.row)
{
if (newRow < 1)
{
newRow = 1;
}
editTarget.row = newRow;
isDirty = true;
}
// EditorGUILayout.EndHorizontal();
// custom uv
editTarget.customUV = EditorGUILayout.Toggle("Customize UV", editTarget.customUV);
if (editTarget.customUV)
{
// uv width height
Vector2 newUVSize = EditorGUILayout.Vector2Field("UV", editTarget.uvSize);
if (newUVSize != editTarget.uvSize)
{
editTarget.uvSize = newUVSize;
isDirty = true;
}
}
else if (editTarget.uvSize != editTarget.size)
{
editTarget.uvSize = editTarget.size;
isDirty = true;
}
// plane type
exPlaneBuilder.Plane newType = (exPlaneBuilder.Plane)EditorGUILayout.EnumPopup("exPlaneBuilder Plane", editTarget.planeType);
if (newType != editTarget.planeType)
{
editTarget.planeType = newType;
isDirty = true;
}
// anchor
exPlaneBuilder.Anchor newAnchor = (exPlaneBuilder.Anchor)EditorGUILayout.EnumPopup("Anchor", editTarget.anchor);
if (newAnchor != editTarget.anchor)
{
editTarget.anchor = newAnchor;
isDirty = true;
}
// add mesh collider button
GUI.enabled = editTarget.GetComponent <Collider>() == null;
if (GUILayout.Button("Add Mesh Collider", GUILayout.Width(120)))
{
editTarget.gameObject.AddComponent <MeshCollider>();
isDirty = true;
}
GUI.enabled = true;
// add box collider button
GUI.enabled = editTarget.GetComponent <Collider>() == null;
if (GUILayout.Button("Add Box Collider", GUILayout.Width(120)))
{
editTarget.gameObject.AddComponent <BoxCollider>();
isDirty = true;
}
GUI.enabled = true;
// if dirty, build it.
// DISABLE {
// GUIStyle styleBuildBtn = GUI.skin.GetStyle("Button");
// Color old = styleBuildBtn.normal.textColor;
// styleBuildBtn.normal.textColor = isDirty ? Color.black : Color.gray;
// if ( GUILayout.Button("Build", GUILayout.Width(100) ) && isDirty ) {
// Build();
// }
// styleBuildBtn.normal.textColor = old;
// } DISABLE end
if (isDirty)
{
Build();
}
}