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| Original file line number | Diff line number | Diff line change |
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| # Changelog | ||
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| # v1.0.0_b2.93 (~2021) | ||
| ## v1.1.0_b2.93 (1st October 2021) | ||
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| ### Added | ||
| * Geometry for `trigger_*` brush entities is now generated on import | ||
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| ## v1.0.0_b2.93 (28th September 2021) | ||
| Initial Release |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,102 @@ | ||
| import collections | ||
| import re | ||
| from typing import Dict, List, Tuple | ||
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| import bpy | ||
| import bmesh | ||
| from mathutils import Vector | ||
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| Plane = Tuple[Vector, float] | ||
| Polygon = List[Vector] | ||
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| trigger_obj = bpy.data.objects["trigger_multiple.060"] | ||
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| pattern_plane_key = re.compile(r"\*trigger_brush_([0-9]+)_plane_([0-9]+)") | ||
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| brushes = collections.defaultdict(lambda: collections.defaultdict(list)) | ||
| # ^ {brush_index: {plane_index: " ".join(map(str, (*normal, distance)))}} | ||
| # ^ Mapping[int, Mapping[int, str]] | ||
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| # for key in entity | ||
| for key in trigger_obj.keys(): | ||
| match = pattern_plane_key.match(key) | ||
| if match: | ||
| brush_index, plane_index = map(int, match.groups()) | ||
| *normal, distance = map(float, trigger_obj[key].split()) # entity[key] | ||
| normal = Vector(normal) | ||
| brushes[brush_index][plane_index] = (normal, distance) | ||
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| # adapted from Sledge by LogicAndTrick (archived) | ||
| # https://github.com/LogicAndTrick/sledge/blob/master/Sledge.DataStructures/Geometric/Precision/Polygon.cs | ||
| def clip(polygon: Polygon, plane: Plane) -> Dict[str, Polygon]: | ||
| normal, distance = plane | ||
| split = {"back": [], "front": []} | ||
| # NOTE: polygon's winding order is preserved | ||
| for i, A in enumerate(polygon): | ||
| B = polygon[(i + 1) % len(polygon)] # next point | ||
| A_distance = Vector.dot(normal, A) - distance | ||
| B_distance = Vector.dot(normal, B) - distance | ||
| A_behind = round(A_distance, 6) < 0 | ||
| B_behind = round(B_distance, 6) < 0 | ||
| if A_behind: | ||
| split["back"].append(A) | ||
| else: # A is in front of the clipping plane | ||
| split["front"].append(A) | ||
| # does the edge AB intersect the clipping plane? | ||
| if (A_behind and not B_behind) or (B_behind and not A_behind): | ||
| t = A_distance / (A_distance - B_distance) | ||
| cut_point = Vector(A).lerp(Vector(B), t) | ||
| split["back"].append(cut_point) | ||
| split["front"].append(cut_point) | ||
| # ^ won't one of these points be added twice? | ||
| return split | ||
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| mesh_data_name = trigger_obj.get("targetname", trigger_obj["classname"]) | ||
| mesh_data = bpy.data.meshes.new(mesh_data_name) | ||
| bm = bmesh.new() | ||
| vertices: Dict[Vector, bmesh.types.BMVert] = dict() | ||
| # ^ {(x, y, z): BMVert(...)} | ||
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| # adapted from vmf_tool.solid.from_namespace by QtPyHammer-devs | ||
| # https://github.com/QtPyHammer-devs/vmf_tool/blob/master/vmf_tool/solid.py | ||
| for brush_index, brush in brushes.items(): | ||
| for plane_index, plane in brush.items(): | ||
| normal, distance = plane | ||
| # make base polygon | ||
| non_parallel = Vector((0, 0, -1)) if abs(normal.z) != 1 else Vector((0, -1, 0)) | ||
| local_y = Vector.cross(non_parallel, normal).normalized() | ||
| local_x = Vector.cross(local_y, normal).normalized() | ||
| center = normal * distance | ||
| radius = 10 ** 6 # may encounter issues if brush is larger than this | ||
| polygon = [center + ((-local_x + local_y) * radius), | ||
| center + ((local_x + local_y) * radius), | ||
| center + ((local_x + -local_y) * radius), | ||
| center + ((-local_x + -local_y) * radius)] | ||
| # slice by other planes | ||
| for other_plane_index, other_plane in brushes[brush_index].items(): | ||
| if other_plane_index == plane_index: | ||
| continue # skip self | ||
| polygon = clip(polygon, other_plane)["back"] | ||
| # append polygon to bmesh | ||
| polygon = list(map(Vector.freeze, polygon)) | ||
| for vertex in polygon: | ||
| if vertex not in vertices: | ||
| vertices[vertex] = bm.verts.new(vertex) | ||
| # try: | ||
| if len(polygon) != 0: # fix for diagonal planes | ||
| bm.faces.new([vertices[v] for v in polygon]) | ||
| # # HACKY BUGFIX | ||
| # except ValueError: | ||
| # pass # "face already exists", idk why this happens | ||
| bm.to_mesh(mesh_data) | ||
| bm.free() | ||
| mesh_data.update() | ||
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| object = bpy.data.objects.new("generated_trigger", mesh_data) | ||
| object.location = tuple(map(float, trigger_obj["origin"].split())) | ||
| object.data.materials.append(bpy.data.materials["TOOLS\\TOOLSTRIGGER"]) | ||
| bpy.data.collections["entities"].objects.link(object) |