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godot/modules/csg/csg_gizmos.cpp
Rémi Verschelde 49646383f1
Update copyright statements to 2021 
Happy new year to the wonderful Godot community!

2020 has been a tough year for most of us personally, but a good year for
Godot development nonetheless with a huge amount of work done towards Godot
4.0 and great improvements backported to the long-lived 3.2 branch.

We've had close to 400 contributors to engine code this year, authoring near
7,000 commit! (And that's only for the `master` branch and for the engine code,
there's a lot more when counting docs, demos and other first-party repos.)

Here's to a great year 2021 for all Godot users 🎆

(cherry picked from commit b5334d14f7)
2021-01-13 16:17:06 +01:00

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/*************************************************************************/
/* csg_gizmos.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* 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. */
/*************************************************************************/
#include "csg_gizmos.h"
///////////
CSGShapeSpatialGizmoPlugin::CSGShapeSpatialGizmoPlugin() {
Color gizmo_color = EDITOR_DEF("editors/3d_gizmos/gizmo_colors/csg", Color(0.0, 0.4, 1, 0.15));
create_material("shape_union_material", gizmo_color);
create_material("shape_union_solid_material", gizmo_color);
gizmo_color.invert();
create_material("shape_subtraction_material", gizmo_color);
create_material("shape_subtraction_solid_material", gizmo_color);
gizmo_color.r = 0.95;
gizmo_color.g = 0.95;
gizmo_color.b = 0.95;
create_material("shape_intersection_material", gizmo_color);
create_material("shape_intersection_solid_material", gizmo_color);
create_handle_material("handles");
}
String CSGShapeSpatialGizmoPlugin::get_handle_name(const EditorSpatialGizmo *p_gizmo, int p_idx) const {
CSGShape *cs = Object::cast_to<CSGShape>(p_gizmo->get_spatial_node());
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 CSGShapeSpatialGizmoPlugin::get_handle_value(EditorSpatialGizmo *p_gizmo, int p_idx) const {
CSGShape *cs = Object::cast_to<CSGShape>(p_gizmo->get_spatial_node());
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 CSGShapeSpatialGizmoPlugin::set_handle(EditorSpatialGizmo *p_gizmo, int p_idx, Camera *p_camera, const Point2 &p_point) {
CSGShape *cs = Object::cast_to<CSGShape>(p_gizmo->get_spatial_node());
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 (SpatialEditor::get_singleton()->is_snap_enabled()) {
d = Math::stepify(d, SpatialEditor::get_singleton()->get_translate_snap());
}
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 (SpatialEditor::get_singleton()->is_snap_enabled()) {
d = Math::stepify(d, SpatialEditor::get_singleton()->get_translate_snap());
}
if (d < 0.001)
d = 0.001;
switch (p_idx) {
case 0: s->set_width(d * 2); break;
case 1: s->set_height(d * 2); break;
case 2: s->set_depth(d * 2); 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 (SpatialEditor::get_singleton()->is_snap_enabled()) {
d = Math::stepify(d, SpatialEditor::get_singleton()->get_translate_snap());
}
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 (SpatialEditor::get_singleton()->is_snap_enabled()) {
d = Math::stepify(d, SpatialEditor::get_singleton()->get_translate_snap());
}
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 CSGShapeSpatialGizmoPlugin::commit_handle(EditorSpatialGizmo *p_gizmo, int p_idx, const Variant &p_restore, bool p_cancel) {
CSGShape *cs = Object::cast_to<CSGShape>(p_gizmo->get_spatial_node());
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 = 0;
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();
}
}
bool CSGShapeSpatialGizmoPlugin::has_gizmo(Spatial *p_spatial) {
return 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);
}
String CSGShapeSpatialGizmoPlugin::get_name() const {
return "CSGShapes";
}
int CSGShapeSpatialGizmoPlugin::get_priority() const {
return -1;
}
bool CSGShapeSpatialGizmoPlugin::is_selectable_when_hidden() const {
return true;
}
void CSGShapeSpatialGizmoPlugin::redraw(EditorSpatialGizmo *p_gizmo) {
CSGShape *cs = Object::cast_to<CSGShape>(p_gizmo->get_spatial_node());
p_gizmo->clear();
Ref<Material> material;
switch (cs->get_operation()) {
case CSGShape::OPERATION_UNION:
material = get_material("shape_union_material", p_gizmo);
break;
case CSGShape::OPERATION_INTERSECTION:
material = get_material("shape_intersection_material", p_gizmo);
break;
case CSGShape::OPERATION_SUBTRACTION:
material = get_material("shape_subtraction_material", p_gizmo);
break;
}
Ref<Material> handles_material = get_material("handles");
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.write[i + j * 2 + 0] = r[f * 3 + j];
lines.write[i + j * 2 + 1] = r[f * 3 + j_n];
}
}
}
p_gizmo->add_lines(lines, material);
p_gizmo->add_collision_segments(lines);
if (p_gizmo->is_selected()) {
// Draw a translucent representation of the CSG node
Ref<ArrayMesh> mesh = memnew(ArrayMesh);
Array array;
array.resize(Mesh::ARRAY_MAX);
array[Mesh::ARRAY_VERTEX] = faces;
mesh->add_surface_from_arrays(Mesh::PRIMITIVE_TRIANGLES, array);
Ref<Material> solid_material;
switch (cs->get_operation()) {
case CSGShape::OPERATION_UNION:
solid_material = get_material("shape_union_solid_material", p_gizmo);
break;
case CSGShape::OPERATION_INTERSECTION:
solid_material = get_material("shape_intersection_solid_material", p_gizmo);
break;
case CSGShape::OPERATION_SUBTRACTION:
solid_material = get_material("shape_subtraction_solid_material", p_gizmo);
break;
}
p_gizmo->add_mesh(mesh, false, Ref<SkinReference>(), solid_material);
}
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));
p_gizmo->add_handles(handles, handles_material);
}
if (Object::cast_to<CSGBox>(cs)) {
CSGBox *s = Object::cast_to<CSGBox>(cs);
Vector<Vector3> handles;
handles.push_back(Vector3(s->get_width() * 0.5, 0, 0));
handles.push_back(Vector3(0, s->get_height() * 0.5, 0));
handles.push_back(Vector3(0, 0, s->get_depth() * 0.5));
p_gizmo->add_handles(handles, handles_material);
}
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));
p_gizmo->add_handles(handles, handles_material);
}
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));
p_gizmo->add_handles(handles, handles_material);
}
}
EditorPluginCSG::EditorPluginCSG(EditorNode *p_editor) {
Ref<CSGShapeSpatialGizmoPlugin> gizmo_plugin = Ref<CSGShapeSpatialGizmoPlugin>(memnew(CSGShapeSpatialGizmoPlugin));
SpatialEditor::get_singleton()->add_gizmo_plugin(gizmo_plugin);
}
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