Adds missing data

addons/cyclops_level_builder/tools/gizmos/gizmo_base.gd

@@ -0,0 +1,92 @@
+# MIT License
+#
+# Copyright (c) 2023 Mark McKay
+# https://github.com/blackears/cyclopsLevelBuilder
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+
+@tool
+extends Node3D
+class_name GizmoBase
+
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	pass # Replace with function body.
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta):
+	pass
+
+
+func intersect_part(ray_origin:Vector3, ray_dir:Vector3, viewport_camera:Camera3D, mesh_inst:MeshInstance3D)->MathUtil.IntersectTriangleResult:
+	var proj:Projection = viewport_camera.get_camera_projection()
+	
+	#Calc modelview matrix
+	var view_inv_matrix:Transform3D = viewport_camera.global_transform.affine_inverse()
+	var mv:Projection = Projection(view_inv_matrix * mesh_inst.global_transform)
+	#Static size adjustment
+	if proj[3][3] != 0:
+		var h:float = abs(1 / (2 * proj[1][1]))
+		var sc = h * 2
+		mv[0] *= sc
+		mv[1] *= sc
+		mv[2] *= sc
+	else:
+		var sc:float = -mv[3].z
+		mv[0] *= sc
+		mv[1] *= sc
+		mv[2] *= sc
+	
+	var model_mtx:Projection = Projection(viewport_camera.global_transform) * mv
+
+	var mesh:Mesh = mesh_inst.mesh
+	var tris:PackedVector3Array = mesh.get_faces()
+	for i in range(0, tris.size(), 3):
+		var p0:Vector3 = tris[i]
+		var p1:Vector3 = tris[i + 1]
+		var p2:Vector3 = tris[i + 2]
+		
+		var p0_t:Vector3 = proj_mul_point(model_mtx, p0)
+		var p1_t:Vector3 = proj_mul_point(model_mtx, p1)
+		var p2_t:Vector3 = proj_mul_point(model_mtx, p2)
+		
+		#print("tri world %s %s %s" % [p0_t, p1_t, p2_t])
+		var res = MathUtil.intersect_triangle(ray_origin, ray_dir, p0_t, p1_t, p2_t)
+		
+		if res:
+			return res
+		
+	return null
+	
+
+func proj_mul_point(m:Projection, p:Vector3)->Vector3:
+	var p4:Vector4 = Vector4(p.x, p.y, p.z, 1)
+	var p4_t = m * p4
+	p4_t /= p4_t.w
+	return Vector3(p4_t.x, p4_t.y, p4_t.z)
+
+
+func proj_mul_vec(m:Projection, p:Vector3)->Vector3:
+	var p4:Vector4 = Vector4(p.x, p.y, p.z, 0)
+	var p4_t = m * p4
+	p4_t /= p4_t.w
+	return Vector3(p4_t.x, p4_t.y, p4_t.z)