CSG Support for Godot!

-Missing Icons
-Missing freezing option (for baking light and faster load)
-Missing a way to export from Godot (GLTF2?)
-Probably buggy (may freeze editor, can be worked around easily, but let me know if this happens so it's easier to catch bugs)
Happy testing!

1 files changed, 315 insertions, 0 deletions

diff --git a/modules/csg/csg_gizmos.cpp b/modules/csg/csg_gizmos.cpp
new file mode 100644
index 0000000000..06cbaab3b0
--- /dev/null
+++ b/modules/csg/csg_gizmos.cpp
@@ -0,0 +1,315 @@
+#include "csg_gizmos.h"
+
+///////////
+
+String CSGShapeSpatialGizmo::get_handle_name(int p_idx) const {
+
+	if (Object::cast_to<CSGSphere>(cs)) {
+
+		return "Radius";
+	}
+
+	if (Object::cast_to<CSGBox>(cs)) {
+
+		static const char *hname[3] = { "Width", "Height", "Depth" };
+		return hname[p_idx];
+	}
+
+	if (Object::cast_to<CSGCylinder>(cs)) {
+
+		return p_idx == 0 ? "Radius" : "Height";
+	}
+
+	if (Object::cast_to<CSGTorus>(cs)) {
+
+		return p_idx == 0 ? "InnerRadius" : "OuterRadius";
+	}
+
+	return "";
+}
+Variant CSGShapeSpatialGizmo::get_handle_value(int p_idx) const {
+
+	if (Object::cast_to<CSGSphere>(cs)) {
+
+		CSGSphere *s = Object::cast_to<CSGSphere>(cs);
+		return s->get_radius();
+	}
+
+	if (Object::cast_to<CSGBox>(cs)) {
+
+		CSGBox *s = Object::cast_to<CSGBox>(cs);
+		switch (p_idx) {
+			case 0: return s->get_width();
+			case 1: return s->get_height();
+			case 2: return s->get_depth();
+		}
+	}
+
+	if (Object::cast_to<CSGCylinder>(cs)) {
+
+		CSGCylinder *s = Object::cast_to<CSGCylinder>(cs);
+		return p_idx == 0 ? s->get_radius() : s->get_height();
+	}
+
+	if (Object::cast_to<CSGTorus>(cs)) {
+
+		CSGTorus *s = Object::cast_to<CSGTorus>(cs);
+		return p_idx == 0 ? s->get_inner_radius() : s->get_outer_radius();
+	}
+
+	return Variant();
+}
+void CSGShapeSpatialGizmo::set_handle(int p_idx, Camera *p_camera, const Point2 &p_point) {
+
+	Transform gt = cs->get_global_transform();
+	gt.orthonormalize();
+	Transform gi = gt.affine_inverse();
+
+	Vector3 ray_from = p_camera->project_ray_origin(p_point);
+	Vector3 ray_dir = p_camera->project_ray_normal(p_point);
+
+	Vector3 sg[2] = { gi.xform(ray_from), gi.xform(ray_from + ray_dir * 16384) };
+
+	if (Object::cast_to<CSGSphere>(cs)) {
+
+		CSGSphere *s = Object::cast_to<CSGSphere>(cs);
+
+		Vector3 ra, rb;
+		Geometry::get_closest_points_between_segments(Vector3(), Vector3(4096, 0, 0), sg[0], sg[1], ra, rb);
+		float d = ra.x;
+		if (d < 0.001)
+			d = 0.001;
+
+		s->set_radius(d);
+	}
+
+	if (Object::cast_to<CSGBox>(cs)) {
+
+		CSGBox *s = Object::cast_to<CSGBox>(cs);
+
+		Vector3 axis;
+		axis[p_idx] = 1.0;
+		Vector3 ra, rb;
+		Geometry::get_closest_points_between_segments(Vector3(), axis * 4096, sg[0], sg[1], ra, rb);
+		float d = ra[p_idx];
+		if (d < 0.001)
+			d = 0.001;
+
+		switch (p_idx) {
+			case 0: s->set_width(d); break;
+			case 1: s->set_height(d); break;
+			case 2: s->set_depth(d); break;
+		}
+	}
+
+	if (Object::cast_to<CSGCylinder>(cs)) {
+
+		CSGCylinder *s = Object::cast_to<CSGCylinder>(cs);
+
+		Vector3 axis;
+		axis[p_idx == 0 ? 0 : 1] = 1.0;
+		Vector3 ra, rb;
+		Geometry::get_closest_points_between_segments(Vector3(), axis * 4096, sg[0], sg[1], ra, rb);
+		float d = axis.dot(ra);
+
+		if (d < 0.001)
+			d = 0.001;
+
+		if (p_idx == 0)
+			s->set_radius(d);
+		else if (p_idx == 1)
+			s->set_height(d * 2.0);
+	}
+
+	if (Object::cast_to<CSGTorus>(cs)) {
+
+		CSGTorus *s = Object::cast_to<CSGTorus>(cs);
+
+		Vector3 axis;
+		axis[0] = 1.0;
+		Vector3 ra, rb;
+		Geometry::get_closest_points_between_segments(Vector3(), axis * 4096, sg[0], sg[1], ra, rb);
+		float d = axis.dot(ra);
+
+		if (d < 0.001)
+			d = 0.001;
+
+		if (p_idx == 0)
+			s->set_inner_radius(d);
+		else if (p_idx == 1)
+			s->set_outer_radius(d);
+	}
+}
+void CSGShapeSpatialGizmo::commit_handle(int p_idx, const Variant &p_restore, bool p_cancel) {
+
+	if (Object::cast_to<CSGSphere>(cs)) {
+		CSGSphere *s = Object::cast_to<CSGSphere>(cs);
+		if (p_cancel) {
+			s->set_radius(p_restore);
+			return;
+		}
+
+		UndoRedo *ur = SpatialEditor::get_singleton()->get_undo_redo();
+		ur->create_action(TTR("Change Sphere Shape Radius"));
+		ur->add_do_method(s, "set_radius", s->get_radius());
+		ur->add_undo_method(s, "set_radius", p_restore);
+		ur->commit_action();
+	}
+
+	if (Object::cast_to<CSGBox>(cs)) {
+		CSGBox *s = Object::cast_to<CSGBox>(cs);
+		if (p_cancel) {
+			switch (p_idx) {
+				case 0: s->set_width(p_restore); break;
+				case 1: s->set_height(p_restore); break;
+				case 2: s->set_depth(p_restore); break;
+			}
+			return;
+		}
+
+		UndoRedo *ur = SpatialEditor::get_singleton()->get_undo_redo();
+		ur->create_action(TTR("Change Box Shape Extents"));
+		static const char *method[3] = { "set_width", "set_height", "set_depth" };
+		float current;
+		switch (p_idx) {
+			case 0: current = s->get_width(); break;
+			case 1: current = s->get_height(); break;
+			case 2: current = s->get_depth(); break;
+		}
+
+		ur->add_do_method(s, method[p_idx], current);
+		ur->add_undo_method(s, method[p_idx], p_restore);
+		ur->commit_action();
+	}
+
+	if (Object::cast_to<CSGCylinder>(cs)) {
+		CSGCylinder *s = Object::cast_to<CSGCylinder>(cs);
+		if (p_cancel) {
+			if (p_idx == 0)
+				s->set_radius(p_restore);
+			else
+				s->set_height(p_restore);
+			return;
+		}
+
+		UndoRedo *ur = SpatialEditor::get_singleton()->get_undo_redo();
+		if (p_idx == 0) {
+			ur->create_action(TTR("Change Cylinder Radius"));
+			ur->add_do_method(s, "set_radius", s->get_radius());
+			ur->add_undo_method(s, "set_radius", p_restore);
+		} else {
+			ur->create_action(TTR("Change Cylinder Height"));
+			ur->add_do_method(s, "set_height", s->get_height());
+			ur->add_undo_method(s, "set_height", p_restore);
+		}
+
+		ur->commit_action();
+	}
+
+	if (Object::cast_to<CSGTorus>(cs)) {
+		CSGTorus *s = Object::cast_to<CSGTorus>(cs);
+		if (p_cancel) {
+			if (p_idx == 0)
+				s->set_inner_radius(p_restore);
+			else
+				s->set_outer_radius(p_restore);
+			return;
+		}
+
+		UndoRedo *ur = SpatialEditor::get_singleton()->get_undo_redo();
+		if (p_idx == 0) {
+			ur->create_action(TTR("Change Torus Inner Radius"));
+			ur->add_do_method(s, "set_inner_radius", s->get_inner_radius());
+			ur->add_undo_method(s, "set_inner_radius", p_restore);
+		} else {
+			ur->create_action(TTR("Change Torus Outer Radius"));
+			ur->add_do_method(s, "set_outer_radius", s->get_outer_radius());
+			ur->add_undo_method(s, "set_outer_radius", p_restore);
+		}
+
+		ur->commit_action();
+	}
+}
+void CSGShapeSpatialGizmo::redraw() {
+
+	clear();
+
+	Color gizmo_color = EDITOR_GET("editors/3d_gizmos/gizmo_colors/csg");
+	Ref<Material> material = create_material("shape_material", gizmo_color);
+
+	PoolVector<Vector3> faces = cs->get_brush_faces();
+
+	Vector<Vector3> lines;
+	lines.resize(faces.size() * 2);
+	{
+		PoolVector<Vector3>::Read r = faces.read();
+
+		for (int i = 0; i < lines.size(); i += 6) {
+			int f = i / 6;
+			for (int j = 0; j < 3; j++) {
+				int j_n = (j + 1) % 3;
+				lines[i + j * 2 + 0] = r[f * 3 + j];
+				lines[i + j * 2 + 1] = r[f * 3 + j_n];
+			}
+		}
+	}
+
+	add_lines(lines, material);
+	add_collision_segments(lines);
+
+	if (Object::cast_to<CSGSphere>(cs)) {
+		CSGSphere *s = Object::cast_to<CSGSphere>(cs);
+
+		float r = s->get_radius();
+		Vector<Vector3> handles;
+		handles.push_back(Vector3(r, 0, 0));
+		add_handles(handles);
+	}
+
+	if (Object::cast_to<CSGBox>(cs)) {
+		CSGBox *s = Object::cast_to<CSGBox>(cs);
+
+		Vector<Vector3> handles;
+		handles.push_back(Vector3(s->get_width(), 0, 0));
+		handles.push_back(Vector3(0, s->get_height(), 0));
+		handles.push_back(Vector3(0, 0, s->get_depth()));
+		add_handles(handles);
+	}
+
+	if (Object::cast_to<CSGCylinder>(cs)) {
+		CSGCylinder *s = Object::cast_to<CSGCylinder>(cs);
+
+		Vector<Vector3> handles;
+		handles.push_back(Vector3(s->get_radius(), 0, 0));
+		handles.push_back(Vector3(0, s->get_height() * 0.5, 0));
+		add_handles(handles);
+	}
+
+	if (Object::cast_to<CSGTorus>(cs)) {
+		CSGTorus *s = Object::cast_to<CSGTorus>(cs);
+
+		Vector<Vector3> handles;
+		handles.push_back(Vector3(s->get_inner_radius(), 0, 0));
+		handles.push_back(Vector3(s->get_outer_radius(), 0, 0));
+		add_handles(handles);
+	}
+}
+CSGShapeSpatialGizmo::CSGShapeSpatialGizmo(CSGShape *p_cs) {
+
+	cs = p_cs;
+	set_spatial_node(p_cs);
+}
+
+Ref<SpatialEditorGizmo> EditorPluginCSG::create_spatial_gizmo(Spatial *p_spatial) {
+	if (Object::cast_to<CSGSphere>(p_spatial) || Object::cast_to<CSGBox>(p_spatial) || Object::cast_to<CSGCylinder>(p_spatial) || Object::cast_to<CSGTorus>(p_spatial) || Object::cast_to<CSGMesh>(p_spatial) || Object::cast_to<CSGPolygon>(p_spatial)) {
+		Ref<CSGShapeSpatialGizmo> csg = memnew(CSGShapeSpatialGizmo(Object::cast_to<CSGShape>(p_spatial)));
+		return csg;
+	}
+
+	return Ref<SpatialEditorGizmo>();
+}
+
+EditorPluginCSG::EditorPluginCSG(EditorNode *p_editor) {
+
+	EDITOR_DEF("editors/3d_gizmos/gizmo_colors/csg", Color(0.2, 0.5, 1, 0.1));
+}