From 4303e94617c15cef6f6a2223e4d06e874fa7ee03 Mon Sep 17 00:00:00 2001
From: Relintai <relintai@protonmail.com>
Date: Fri, 31 Dec 2021 08:41:25 +0100
Subject: [PATCH] Implemented a different outline for the edge select mode.

---
 .../mesh_data_resource_editor/MIDGizmo.gd     |  6 ++
 .../utilities/mesh_outline.gd                 | 58 +++++++++++++++----
 2 files changed, 52 insertions(+), 12 deletions(-)

diff --git a/game/addons/mesh_data_resource_editor/MIDGizmo.gd b/game/addons/mesh_data_resource_editor/MIDGizmo.gd
index 5b77d4a0..a54b21a6 100644
--- a/game/addons/mesh_data_resource_editor/MIDGizmo.gd
+++ b/game/addons/mesh_data_resource_editor/MIDGizmo.gd
@@ -121,6 +121,12 @@ func redraw():
 	var material = get_plugin().get_material("main", self)
 	
 	_mesh_outline_generator.setup(_mdr)
+	
+	if selection_mode == SelectionMode.SELECTION_MODE_EDGE:
+		_mesh_outline_generator.generate_mark_edges()
+	else:
+		_mesh_outline_generator.generate()
+	
 	add_lines(_mesh_outline_generator.lines, material, false)
 	
 	if _selected_points.size() > 0:
diff --git a/game/addons/mesh_data_resource_editor/utilities/mesh_outline.gd b/game/addons/mesh_data_resource_editor/utilities/mesh_outline.gd
index 0666ce19..5b60916c 100644
--- a/game/addons/mesh_data_resource_editor/utilities/mesh_outline.gd
+++ b/game/addons/mesh_data_resource_editor/utilities/mesh_outline.gd
@@ -8,9 +8,7 @@ var lines : PoolVector3Array
 func setup(mdr : MeshDataResource) -> void:
 	_mdr = mdr
 
-	refresh()
-
-func refresh():
+func generate():
 	lines.resize(0)
 
 	if !_mdr:
@@ -31,13 +29,49 @@ func refresh():
 		return
 
 	if indices.size() % 3 == 0:
-		for i in range(0, len(indices), 3):
-			lines.append(vertices[indices[i]])
-			lines.append(vertices[indices[i + 1]])
-			
-			lines.append(vertices[indices[i + 1]])
-			lines.append(vertices[indices[i + 2]])
-			
-			lines.append(vertices[indices[i + 2]])
-			lines.append(vertices[indices[i]])
+		for i in range(0, indices.size(), 3):
+			for j in range(3):
+				lines.append(vertices[indices[i + j]])
+				lines.append(vertices[indices[i + ((j + 1) % 3)]])
 			
+func generate_mark_edges():
+	lines.resize(0)
+
+	if !_mdr:
+		return
+	
+	if _mdr.array.size() != ArrayMesh.ARRAY_MAX:
+		return
+	
+	if _mdr.array[ArrayMesh.ARRAY_VERTEX] == null || _mdr.array[ArrayMesh.ARRAY_INDEX] == null:
+		return
+	
+	var arr : Array = _mdr.array
+	
+	var vertices : PoolVector3Array = arr[ArrayMesh.ARRAY_VERTEX]
+	var indices : PoolIntArray = arr[ArrayMesh.ARRAY_INDEX]
+	
+	if vertices.size() == 0:
+		return
+
+	if indices.size() % 3 == 0:
+		for i in range(0, indices.size(), 3):
+			for j in range(3):
+				var i0 : int = indices[i + j]
+				var i1 : int = indices[i + ((j + 1) % 3)]
+				
+				var v0 : Vector3 = vertices[i0]
+				var v1 : Vector3 = vertices[i1]
+				
+				lines.append(v0)
+				lines.append(v1)
+				
+				var pmid : Vector3 = lerp(v0, v1, 0.5)
+				var l : float = (v0 - v1).length() / 20.0
+				
+				lines.append(pmid + Vector3(l, 0, 0))
+				lines.append(pmid + Vector3(-l, 0, 0))
+				lines.append(pmid + Vector3(0, 0, l))
+				lines.append(pmid + Vector3(0, 0, -l))
+				lines.append(pmid + Vector3(0, l, 0))
+				lines.append(pmid + Vector3(0, -l, 0))