///////////////////////////////////////////////////////////////////////////////
// functions
///////////////////////////////////////////////////////////////////////////////
// ------------------------------------------------------------------
// Desc:
// ------------------------------------------------------------------
public void Build()
{
isDirty = false;
exCubeBuilder editTarget = target as exCubeBuilder;
// create new mesh
Mesh newMesh = new Mesh();
newMesh.name = "builtin-cube";
Vector3 center = editTarget.center;
Vector3 halfSize = editTarget.size / 2.0f;
/*
* 4---------5
* / | /|
* / | / |
* / | / |
* 0---------1 |
* | | | |
* | 7----|---6
* | / | /
* | / | /
* | / |/
* 3---------2
*/
// build vertices
newMesh.vertices = new Vector3[] {
// front face
center + new Vector3(halfSize.x, halfSize.y, halfSize.z), // 0
center + new Vector3(-halfSize.x, halfSize.y, halfSize.z), // 1
center + new Vector3(-halfSize.x, -halfSize.y, halfSize.z), // 2
center + new Vector3(halfSize.x, -halfSize.y, halfSize.z), // 3
// top face
center + new Vector3(halfSize.x, halfSize.y, -halfSize.z), // 4
center + new Vector3(-halfSize.x, halfSize.y, -halfSize.z), // 5
center + new Vector3(-halfSize.x, halfSize.y, halfSize.z), // 6
center + new Vector3(halfSize.x, halfSize.y, halfSize.z), // 7
// rear face
center + new Vector3(-halfSize.x, halfSize.y, -halfSize.z), // 8
center + new Vector3(halfSize.x, halfSize.y, -halfSize.z), // 9
center + new Vector3(halfSize.x, -halfSize.y, -halfSize.z), // 10
center + new Vector3(-halfSize.x, -halfSize.y, -halfSize.z), // 11
// bottom face
center + new Vector3(halfSize.x, -halfSize.y, halfSize.z), // 12
center + new Vector3(-halfSize.x, -halfSize.y, halfSize.z), // 13
center + new Vector3(-halfSize.x, -halfSize.y, -halfSize.z), // 14
center + new Vector3(halfSize.x, -halfSize.y, -halfSize.z), // 15
// left face
center + new Vector3(-halfSize.x, halfSize.y, halfSize.z), // 16
center + new Vector3(-halfSize.x, halfSize.y, -halfSize.z), // 17
center + new Vector3(-halfSize.x, -halfSize.y, -halfSize.z), // 18
center + new Vector3(-halfSize.x, -halfSize.y, halfSize.z), // 19
// right face
center + new Vector3(halfSize.x, halfSize.y, -halfSize.z), // 20
center + new Vector3(halfSize.x, halfSize.y, halfSize.z), // 21
center + new Vector3(halfSize.x, -halfSize.y, halfSize.z), // 22
center + new Vector3(halfSize.x, -halfSize.y, -halfSize.z), // 23
};
// build uvs
newMesh.uv = new Vector2[] {
// front face
new Vector2(0.0f, 1.0f),
new Vector2(1.0f, 1.0f),
new Vector2(1.0f, 0.0f),
new Vector2(0.0f, 0.0f),
// top face
new Vector2(0.0f, 1.0f),
new Vector2(1.0f, 1.0f),
new Vector2(1.0f, 0.0f),
new Vector2(0.0f, 0.0f),
// rear face
new Vector2(1.0f, 0.0f),
new Vector2(0.0f, 0.0f),
new Vector2(0.0f, 1.0f),
new Vector2(1.0f, 1.0f),
// bottom face
new Vector2(0.0f, 1.0f),
new Vector2(1.0f, 1.0f),
new Vector2(1.0f, 0.0f),
new Vector2(0.0f, 0.0f),
// left face
new Vector2(0.0f, 1.0f),
new Vector2(1.0f, 1.0f),
new Vector2(1.0f, 0.0f),
new Vector2(0.0f, 0.0f),
// right face
new Vector2(0.0f, 1.0f),
new Vector2(1.0f, 1.0f),
new Vector2(1.0f, 0.0f),
new Vector2(0.0f, 0.0f),
};
// build normals
newMesh.normals = new Vector3[] {
// front face
new Vector3(0.0f, 0.0f, 1.0f),
new Vector3(0.0f, 0.0f, 1.0f),
new Vector3(0.0f, 0.0f, 1.0f),
new Vector3(0.0f, 0.0f, 1.0f),
// top face
new Vector3(0.0f, 1.0f, 0.0f),
new Vector3(0.0f, 1.0f, 0.0f),
new Vector3(0.0f, 1.0f, 0.0f),
new Vector3(0.0f, 1.0f, 0.0f),
// rear face
new Vector3(0.0f, 0.0f, -1.0f),
new Vector3(0.0f, 0.0f, -1.0f),
new Vector3(0.0f, 0.0f, -1.0f),
new Vector3(0.0f, 0.0f, -1.0f),
// bottom face
new Vector3(0.0f, -1.0f, 0.0f),
new Vector3(0.0f, -1.0f, 0.0f),
new Vector3(0.0f, -1.0f, 0.0f),
new Vector3(0.0f, -1.0f, 0.0f),
// left face
new Vector3(-1.0f, 0.0f, 0.0f),
new Vector3(-1.0f, 0.0f, 0.0f),
new Vector3(-1.0f, 0.0f, 0.0f),
new Vector3(-1.0f, 0.0f, 0.0f),
// right face
new Vector3(1.0f, 0.0f, 0.0f),
new Vector3(1.0f, 0.0f, 0.0f),
new Vector3(1.0f, 0.0f, 0.0f),
new Vector3(1.0f, 0.0f, 0.0f),
};
// build the colors
newMesh.colors = new Color [] {
Color.white, Color.white, Color.white, Color.white,
Color.white, Color.white, Color.white, Color.white,
Color.white, Color.white, Color.white, Color.white,
Color.white, Color.white, Color.white, Color.white,
Color.white, Color.white, Color.white, Color.white,
Color.white, Color.white, Color.white, Color.white,
};
// build indices
newMesh.triangles = new int [] {
0, 1, 3, 3, 1, 2, // front
4, 5, 7, 7, 5, 6, // top
8, 9, 11, 11, 9, 10, // rear
12, 13, 15, 15, 13, 14, // bottom
16, 17, 19, 19, 17, 18, // left
20, 21, 23, 23, 21, 22, // right
};
//
editTarget.GetComponent <MeshFilter>().sharedMesh = newMesh;
// if we have mesh collider, update it either
BoxCollider boxCol = editTarget.GetComponent <BoxCollider>();
if (boxCol)
{
boxCol.size = editTarget.size;
boxCol.center = editTarget.center;
}
}
// ------------------------------------------------------------------
// Desc:
// ------------------------------------------------------------------
public override void OnInspectorGUI()
{
exCubeBuilder editTarget = target as exCubeBuilder;
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
Vector3 newSize = EditorGUILayout.Vector3Field("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;
}
if (newSize.z < 1.0f)
{
newSize.z = 1.0f;
}
editTarget.size = newSize;
isDirty = true;
}
// center
Vector3 newCenter = EditorGUILayout.Vector3Field("Center", editTarget.center);
if (newCenter != editTarget.center)
{
editTarget.center = newCenter;
isDirty = true;
}
// add collider button
GUI.enabled = editTarget.GetComponent <Collider>() == null;
if (GUILayout.Button("Add Box Collider", GUILayout.Width(150)))
{
editTarget.gameObject.AddComponent <BoxCollider>();
isDirty = true;
}
GUI.enabled = true;
// if dirty, build it.
if (isDirty)
{
Build();
}
}