godot/modules/csg/csg_gizmos.cpp
Hugo Locurcio 527fb3968a
Implement snapping in the CSG gizmos and 3D polygon editor
The spatial editor snap settings will now affect the CSG gizmos
and 3D polygon editor (which is used in CSGPolygon).
2019-07-02 20:02:07 +02:00

379 lines
12 KiB
C++

/*************************************************************************/
/* csg_gizmos.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* 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. */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/*************************************************************************/
#include "csg_gizmos.h"
///////////
CSGShapeSpatialGizmoPlugin::CSGShapeSpatialGizmoPlugin() {
Color gizmo_color = EDITOR_DEF("editors/3d_gizmos/gizmo_colors/csg", Color(0.2, 0.5, 1, 0.1));
create_material("shape_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 = get_material("shape_material", p_gizmo);
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 (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);
}