07 Face normals

.gitignore

@@ -0,0 +1 @@
+.import/*

Main.tscn

@@ -0,0 +1,55 @@
+[gd_scene load_steps=7 format=2]
+
+[ext_resource path="res://Scripts/Main.gd" type="Script" id=1]
+
+[sub_resource type="SpatialMaterial" id=1]
+albedo_color = Color( 0.0627451, 0.8, 0.25098, 1 )
+
+[sub_resource type="CubeMesh" id=2]
+material = SubResource( 1 )
+
+[sub_resource type="BoxShape" id=5]
+
+[sub_resource type="SpatialMaterial" id=3]
+albedo_color = Color( 0.592157, 0.905882, 0.0862745, 1 )
+
+[sub_resource type="CubeMesh" id=4]
+material = SubResource( 3 )
+
+[node name="Main" type="Spatial"]
+transform = Transform( 1, 0, 0, 0, 0.99977, 0.021431, 0, -0.021431, 0.99977, 0, 0, 0 )
+script = ExtResource( 1 )
+show_wireframe = false
+show_axes = false
+show_face_normals = false
+
+[node name="Meshes" type="Node" parent="."]
+
+[node name="Cube" type="MeshInstance" parent="Meshes"]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1.07597, 0 )
+mesh = SubResource( 2 )
+material/0 = null
+
+[node name="StaticBody" type="StaticBody" parent="Meshes/Cube"]
+
+[node name="CollisionShape" type="CollisionShape" parent="Meshes/Cube/StaticBody"]
+shape = SubResource( 5 )
+
+[node name="Floor" type="MeshInstance" parent="Meshes"]
+transform = Transform( 6.88346, 0, 0, 0, 0.0447118, 0, 0, 0, 7.16078, 0, 0, 0 )
+mesh = SubResource( 4 )
+material/0 = null
+
+[node name="Lights" type="Node" parent="."]
+
+[node name="DirectionalLight" type="DirectionalLight" parent="Lights"]
+transform = Transform( 1, 0, 0, 0, 0.778528, 0.62761, 0, -0.62761, 0.778528, 0, 3.77816, 3.77808 )
+
+[node name="CameraAnchor" type="Spatial" parent="."]
+transform = Transform( 0.391454, -0.0197208, 0.919986, 0.0197208, 0.999721, 0.0130388, -0.919987, 0.0130388, 0.391734, 0, 0, 0 )
+
+[node name="Camera" type="Camera" parent="CameraAnchor"]
+transform = Transform( 0.871787, -0.177322, 0.456666, -9.31323e-10, 0.932191, 0.361967, -0.489885, -0.315558, 0.812672, 2.14561, 3.89777, 4.89912 )
+[connection signal="input_event" from="Meshes/Cube/StaticBody" to="." method="_on_StaticBody_input_event"]
+[connection signal="mouse_entered" from="Meshes/Cube/StaticBody" to="." method="_on_StaticBody_mouse_entered"]
+[connection signal="mouse_exited" from="Meshes/Cube/StaticBody" to="." method="_on_StaticBody_mouse_exited"]

README.md

@@ -1 +1,5 @@
-# MeshManipulation
+# GODOT Mesh Manipulation
+
+I'm following along this series https://www.youtube.com/playlist?list=PLWWV0KoRkFHAMR27dAy3YsJHbkCGpIuAF I did skip 01 so ...yeah. Only thing so far I noticed is that I didn't import in anything from Blender, I just created a MeshInstance that had a cube body. Didn't even know it was different till it was brought up way later.
+
+Started branching at the beginning of video 08.

Scripts/Main.gd

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+extends Spatial
+
+var is_rotate_enabled = false
+var is_zoom_enabled = false
+var input_start_position = Vector2()
+var camera_anchor
+var rotation_speed = 0.2
+var zoom_step = 0.002
+var camera
+var zoom_min = 3
+
+export var show_wireframe = true
+export var show_axes = true
+export var show_face_normals = true
+
+func _input(event):
+	if event.is_action_pressed("ui_rotate"):
+		is_rotate_enabled = true
+		input_start_position = get_viewport().get_mouse_position()
+	if event.is_action_released("ui_rotate"):
+		is_rotate_enabled = false
+
+	if event.is_action_pressed("ui_zoom"):
+		is_zoom_enabled = true
+		input_start_position = get_viewport().get_mouse_position()
+	if event.is_action_released("ui_zoom"):
+		is_zoom_enabled = false
+	
+	if event.is_action_pressed("ui_exit"):
+		get_tree().quit()
+
+	if event is InputEventMouse:
+		var delta = input_start_position - event.get_position()
+		if is_rotate_enabled:
+			print("Delta x:", delta.x, " y: ", delta.y)
+			camera_anchor.rotate_y(deg2rad(delta.x) * rotation_speed)
+			#camera_anchor.rotate_z(deg2rad(delta.y) * rotation_speed) # Hmm
+			input_start_position = event.get_position()
+		elif is_zoom_enabled:
+			var camera_to_anchor = camera_anchor.get_global_transform().origin - camera.get_global_transform().origin
+			var length = camera_to_anchor.length()
+			if(length > zoom_min):
+				camera.global_translate((delta.y * zoom_step) * camera_to_anchor)
+			input_start_position = event.get_position()
+
+func _ready():
+	camera_anchor = get_node("CameraAnchor")
+	camera = get_node("CameraAnchor/Camera")
+
+	if show_wireframe:
+		drawWireframe()
+	if show_axes:
+		drawAxes()
+	if show_face_normals:
+		drawSurfaceNormals()
+
+func drawSurfaceNormals():
+	var cubeMeshInstance = get_node("Meshes/Cube")
+	var cubeMesh = cubeMeshInstance.get_mesh()
+	var vertices = cubeMesh.get_faces()
+	var arrayMesh = ArrayMesh.new()
+	var arrays = []
+	arrays.resize(ArrayMesh.ARRAY_MAX)
+	arrays[ArrayMesh.ARRAY_VERTEX] = vertices
+	arrayMesh.add_surface_from_arrays(Mesh.PRIMITIVE_TRIANGLES, arrays)
+	var meshDataTool = MeshDataTool.new()
+	meshDataTool.create_from_surface(arrayMesh, 0)
+	
+	var ig = ImmediateGeometry.new()
+	var sm = SpatialMaterial.new()
+	sm.flags_unshaded = true
+	sm.vertex_color_use_as_albedo = true
+	ig.material_override = sm
+
+	ig.begin(Mesh.PRIMITIVE_LINES)
+	ig.set_color(Color.white)
+	
+	var i = 0
+	while i < meshDataTool.get_face_count():
+		var verticesIndex = i * 3
+		var a = vertices[verticesIndex]
+		var b = vertices[verticesIndex + 1]
+		var c = vertices[verticesIndex + 2]
+		var face_center = (a+b+c)/3
+
+		ig.add_vertex(face_center)
+		ig.add_vertex(meshDataTool.get_face_normal(i) + face_center)
+		i += 1
+
+	ig.end()
+	cubeMeshInstance.add_child(ig)
+
+func drawAxes():
+	var axisGeom = ImmediateGeometry.new()
+	var axisMaterial = SpatialMaterial.new()
+	var axisLength = 10
+	axisMaterial.flags_unshaded = true
+	axisMaterial.vertex_color_use_as_albedo = true
+	axisMaterial.flags_no_depth_test = true # Makes it so the lines are drawn over the earlier added objects
+	axisGeom.material_override = axisMaterial;
+	axisGeom.begin(Mesh.PRIMITIVE_LINES)
+
+	axisGeom.set_color(Color.red)
+	axisGeom.add_vertex(Vector3(0,0,0))
+	axisGeom.add_vertex(Vector3(axisLength,0,0))
+	axisGeom.set_color(Color.green)
+	axisGeom.add_vertex(Vector3(0,0,0))
+	axisGeom.add_vertex(Vector3(0,axisLength,0))
+	axisGeom.set_color(Color.blue)
+	axisGeom.add_vertex(Vector3(0,0,0))
+	axisGeom.add_vertex(Vector3(0,0,axisLength))
+	
+	axisGeom.end()
+	add_child(axisGeom)
+
+func drawWireframe():
+	var cubeMeshInstance = get_node("Meshes/Cube")
+	var cubeMesh = cubeMeshInstance.get_mesh()
+	
+	var ig = ImmediateGeometry.new()
+	var sm = SpatialMaterial.new()
+	sm.flags_unshaded = true
+	sm.vertex_color_use_as_albedo = true
+	ig.material_override = sm
+
+	ig.begin(Mesh.PRIMITIVE_LINES)
+	ig.set_color(Color.yellow)
+	
+	cubeMesh.create_outline(1.0)
+	var vertices = cubeMesh.get_faces()
+	
+	var i = 0
+	print("Size: %s" % vertices.size())
+	while i < vertices.size():
+		ig.add_vertex(vertices[i])
+		ig.add_vertex(vertices[i+1])
+		ig.add_vertex(vertices[i+1])
+		ig.add_vertex(vertices[i+2])
+		ig.add_vertex(vertices[i+2])
+		ig.add_vertex(vertices[i])
+		i += 3
+	
+	ig.end()
+	var sf = 1.005
+	ig.set_scale(Vector3(sf, sf, sf))
+	cubeMeshInstance.add_child(ig)
+
+func _on_StaticBody_mouse_entered():
+	print("In cube")
+
+func _on_StaticBody_mouse_exited():
+	print("Out cube")
+
+func _on_StaticBody_input_event(camera, event, click_position, click_normal, shape_idx):
+	if event.is_action_pressed("left_mouse"):
+		print("Pos ", click_position)

default_env.tres

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+[gd_resource type="Environment" load_steps=2 format=2]
+
+[sub_resource type="ProceduralSky" id=1]
+
+[resource]
+background_mode = 2
+background_sky = SubResource( 1 )

icon.png.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="StreamTexture"
+path="res://.import/icon.png-487276ed1e3a0c39cad0279d744ee560.stex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://icon.png"
+dest_files=[ "res://.import/icon.png-487276ed1e3a0c39cad0279d744ee560.stex" ]
+
+[params]
+
+compress/mode=0
+compress/lossy_quality=0.7
+compress/hdr_mode=0
+compress/bptc_ldr=0
+compress/normal_map=0
+flags/repeat=0
+flags/filter=true
+flags/mipmaps=false
+flags/anisotropic=false
+flags/srgb=2
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/HDR_as_SRGB=false
+process/invert_color=false
+stream=false
+size_limit=0
+detect_3d=true
+svg/scale=1.0

project.godot

@@ -0,0 +1,65 @@
+; Engine configuration file.
+; It's best edited using the editor UI and not directly,
+; since the parameters that go here are not all obvious.
+;
+; Format:
+;   [section] ; section goes between []
+;   param=value ; assign values to parameters
+
+config_version=4
+
+_global_script_classes=[  ]
+_global_script_class_icons={
+
+}
+
+[application]
+
+config/name="MeshManipulation"
+run/main_scene="res://Main.tscn"
+config/icon="res://icon.png"
+
+[input]
+
+ui_exit={
+"deadzone": 0.5,
+"events": [ Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"pressed":false,"scancode":16777217,"unicode":0,"echo":false,"script":null)
+ ]
+}
+ui_rotate={
+"deadzone": 0.5,
+"events": [ Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"pressed":false,"scancode":16777240,"unicode":0,"echo":false,"script":null)
+, Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"button_mask":0,"position":Vector2( 0, 0 ),"global_position":Vector2( 0, 0 ),"factor":1.0,"button_index":3,"pressed":false,"doubleclick":false,"script":null)
+ ]
+}
+ui_zoom={
+"deadzone": 0.5,
+"events": [ Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"pressed":false,"scancode":16777237,"unicode":0,"echo":false,"script":null)
+ ]
+}
+ui_pan={
+"deadzone": 0.5,
+"events": [ Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"pressed":false,"scancode":16777238,"unicode":0,"echo":false,"script":null)
+ ]
+}
+ui_zoom_in={
+"deadzone": 0.5,
+"events": [ Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"button_mask":0,"position":Vector2( 0, 0 ),"global_position":Vector2( 0, 0 ),"factor":1.0,"button_index":4,"pressed":false,"doubleclick":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"pressed":false,"scancode":16777349,"unicode":0,"echo":false,"script":null)
+ ]
+}
+ui_zoom_out={
+"deadzone": 0.5,
+"events": [ Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"pressed":false,"scancode":16777347,"unicode":0,"echo":false,"script":null)
+, Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"button_mask":0,"position":Vector2( 0, 0 ),"global_position":Vector2( 0, 0 ),"factor":1.0,"button_index":5,"pressed":false,"doubleclick":false,"script":null)
+ ]
+}
+left_mouse={
+"deadzone": 0.5,
+"events": [ Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"button_mask":0,"position":Vector2( 0, 0 ),"global_position":Vector2( 0, 0 ),"factor":1.0,"button_index":1,"pressed":false,"doubleclick":false,"script":null)
+ ]
+}
+
+[rendering]
+
+environment/default_environment="res://default_env.tres"