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csg_shape.cpp
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/*************************************************************************/
/* csg_shape.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 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_shape.h"
#include "core/math/geometry_2d.h"
void CSGShape3D::set_use_collision(bool p_enable) {
if (use_collision == p_enable) {
return;
}
use_collision = p_enable;
if (!is_inside_tree() || !is_root_shape()) {
return;
}
if (use_collision) {
root_collision_shape.instantiate();
root_collision_instance = PhysicsServer3D::get_singleton()->body_create();
PhysicsServer3D::get_singleton()->body_set_mode(root_collision_instance, PhysicsServer3D::BODY_MODE_STATIC);
PhysicsServer3D::get_singleton()->body_set_state(root_collision_instance, PhysicsServer3D::BODY_STATE_TRANSFORM, get_global_transform());
PhysicsServer3D::get_singleton()->body_add_shape(root_collision_instance, root_collision_shape->get_rid());
PhysicsServer3D::get_singleton()->body_set_space(root_collision_instance, get_world_3d()->get_space());
PhysicsServer3D::get_singleton()->body_attach_object_instance_id(root_collision_instance, get_instance_id());
set_collision_layer(collision_layer);
set_collision_mask(collision_mask);
_make_dirty(); //force update
} else {
PhysicsServer3D::get_singleton()->free(root_collision_instance);
root_collision_instance = RID();
root_collision_shape.unref();
}
notify_property_list_changed();
}
bool CSGShape3D::is_using_collision() const {
return use_collision;
}
void CSGShape3D::set_collision_layer(uint32_t p_layer) {
collision_layer = p_layer;
if (root_collision_instance.is_valid()) {
PhysicsServer3D::get_singleton()->body_set_collision_layer(root_collision_instance, p_layer);
}
}
uint32_t CSGShape3D::get_collision_layer() const {
return collision_layer;
}
void CSGShape3D::set_collision_mask(uint32_t p_mask) {
collision_mask = p_mask;
if (root_collision_instance.is_valid()) {
PhysicsServer3D::get_singleton()->body_set_collision_mask(root_collision_instance, p_mask);
}
}
uint32_t CSGShape3D::get_collision_mask() const {
return collision_mask;
}
void CSGShape3D::set_collision_layer_value(int p_layer_number, bool p_value) {
ERR_FAIL_COND_MSG(p_layer_number < 1, "Collision layer number must be between 1 and 32 inclusive.");
ERR_FAIL_COND_MSG(p_layer_number > 32, "Collision layer number must be between 1 and 32 inclusive.");
uint32_t collision_layer = get_collision_layer();
if (p_value) {
collision_layer |= 1 << (p_layer_number - 1);
} else {
collision_layer &= ~(1 << (p_layer_number - 1));
}
set_collision_layer(collision_layer);
}
bool CSGShape3D::get_collision_layer_value(int p_layer_number) const {
ERR_FAIL_COND_V_MSG(p_layer_number < 1, false, "Collision layer number must be between 1 and 32 inclusive.");
ERR_FAIL_COND_V_MSG(p_layer_number > 32, false, "Collision layer number must be between 1 and 32 inclusive.");
return get_collision_layer() & (1 << (p_layer_number - 1));
}
void CSGShape3D::set_collision_mask_value(int p_layer_number, bool p_value) {
ERR_FAIL_COND_MSG(p_layer_number < 1, "Collision layer number must be between 1 and 32 inclusive.");
ERR_FAIL_COND_MSG(p_layer_number > 32, "Collision layer number must be between 1 and 32 inclusive.");
uint32_t mask = get_collision_mask();
if (p_value) {
mask |= 1 << (p_layer_number - 1);
} else {
mask &= ~(1 << (p_layer_number - 1));
}
set_collision_mask(mask);
}
bool CSGShape3D::get_collision_mask_value(int p_layer_number) const {
ERR_FAIL_COND_V_MSG(p_layer_number < 1, false, "Collision layer number must be between 1 and 32 inclusive.");
ERR_FAIL_COND_V_MSG(p_layer_number > 32, false, "Collision layer number must be between 1 and 32 inclusive.");
return get_collision_mask() & (1 << (p_layer_number - 1));
}
bool CSGShape3D::is_root_shape() const {
return !parent_shape;
}
void CSGShape3D::set_snap(float p_snap) {
snap = p_snap;
}
float CSGShape3D::get_snap() const {
return snap;
}
void CSGShape3D::_make_dirty(bool p_parent_removing) {
if ((p_parent_removing || is_root_shape()) && !dirty) {
call_deferred(SNAME("_update_shape")); // Must be deferred; otherwise, is_root_shape() will use the previous parent
}
if (!is_root_shape()) {
parent_shape->_make_dirty();
} else if (!dirty) {
call_deferred(SNAME("_update_shape"));
}
dirty = true;
}
CSGBrush *CSGShape3D::_get_brush() {
if (dirty) {
if (brush) {
memdelete(brush);
}
brush = nullptr;
CSGBrush *n = _build_brush();
for (int i = 0; i < get_child_count(); i++) {
CSGShape3D *child = Object::cast_to<CSGShape3D>(get_child(i));
if (!child) {
continue;
}
if (!child->is_visible()) {
continue;
}
CSGBrush *n2 = child->_get_brush();
if (!n2) {
continue;
}
if (!n) {
n = memnew(CSGBrush);
n->copy_from(*n2, child->get_transform());
} else {
CSGBrush *nn = memnew(CSGBrush);
CSGBrush *nn2 = memnew(CSGBrush);
nn2->copy_from(*n2, child->get_transform());
CSGBrushOperation bop;
switch (child->get_operation()) {
case CSGShape3D::OPERATION_UNION:
bop.merge_brushes(CSGBrushOperation::OPERATION_UNION, *n, *nn2, *nn, snap);
break;
case CSGShape3D::OPERATION_INTERSECTION:
bop.merge_brushes(CSGBrushOperation::OPERATION_INTERSECTION, *n, *nn2, *nn, snap);
break;
case CSGShape3D::OPERATION_SUBTRACTION:
bop.merge_brushes(CSGBrushOperation::OPERATION_SUBTRACTION, *n, *nn2, *nn, snap);
break;
}
memdelete(n);
memdelete(nn2);
n = nn;
}
}
if (n) {
AABB aabb;
for (int i = 0; i < n->faces.size(); i++) {
for (int j = 0; j < 3; j++) {
if (i == 0 && j == 0) {
aabb.position = n->faces[i].vertices[j];
} else {
aabb.expand_to(n->faces[i].vertices[j]);
}
}
}
node_aabb = aabb;
} else {
node_aabb = AABB();
}
brush = n;
dirty = false;
}
return brush;
}
int CSGShape3D::mikktGetNumFaces(const SMikkTSpaceContext *pContext) {
ShapeUpdateSurface &surface = *((ShapeUpdateSurface *)pContext->m_pUserData);
return surface.vertices.size() / 3;
}
int CSGShape3D::mikktGetNumVerticesOfFace(const SMikkTSpaceContext *pContext, const int iFace) {
// always 3
return 3;
}
void CSGShape3D::mikktGetPosition(const SMikkTSpaceContext *pContext, float fvPosOut[], const int iFace, const int iVert) {
ShapeUpdateSurface &surface = *((ShapeUpdateSurface *)pContext->m_pUserData);
Vector3 v = surface.verticesw[iFace * 3 + iVert];
fvPosOut[0] = v.x;
fvPosOut[1] = v.y;
fvPosOut[2] = v.z;
}
void CSGShape3D::mikktGetNormal(const SMikkTSpaceContext *pContext, float fvNormOut[], const int iFace, const int iVert) {
ShapeUpdateSurface &surface = *((ShapeUpdateSurface *)pContext->m_pUserData);
Vector3 n = surface.normalsw[iFace * 3 + iVert];
fvNormOut[0] = n.x;
fvNormOut[1] = n.y;
fvNormOut[2] = n.z;
}
void CSGShape3D::mikktGetTexCoord(const SMikkTSpaceContext *pContext, float fvTexcOut[], const int iFace, const int iVert) {
ShapeUpdateSurface &surface = *((ShapeUpdateSurface *)pContext->m_pUserData);
Vector2 t = surface.uvsw[iFace * 3 + iVert];
fvTexcOut[0] = t.x;
fvTexcOut[1] = t.y;
}
void CSGShape3D::mikktSetTSpaceDefault(const SMikkTSpaceContext *pContext, const float fvTangent[], const float fvBiTangent[], const float fMagS, const float fMagT,
const tbool bIsOrientationPreserving, const int iFace, const int iVert) {
ShapeUpdateSurface &surface = *((ShapeUpdateSurface *)pContext->m_pUserData);
int i = iFace * 3 + iVert;
Vector3 normal = surface.normalsw[i];
Vector3 tangent = Vector3(fvTangent[0], fvTangent[1], fvTangent[2]);
Vector3 bitangent = Vector3(-fvBiTangent[0], -fvBiTangent[1], -fvBiTangent[2]); // for some reason these are reversed, something with the coordinate system in Godot
float d = bitangent.dot(normal.cross(tangent));
i *= 4;
surface.tansw[i++] = tangent.x;
surface.tansw[i++] = tangent.y;
surface.tansw[i++] = tangent.z;
surface.tansw[i++] = d < 0 ? -1 : 1;
}
void CSGShape3D::_update_shape() {
if (!is_root_shape()) {
return;
}
set_base(RID());
root_mesh.unref(); //byebye root mesh
CSGBrush *n = _get_brush();
ERR_FAIL_COND_MSG(!n, "Cannot get CSGBrush.");
OAHashMap<Vector3, Vector3> vec_map;
Vector<int> face_count;
face_count.resize(n->materials.size() + 1);
for (int i = 0; i < face_count.size(); i++) {
face_count.write[i] = 0;
}
for (int i = 0; i < n->faces.size(); i++) {
int mat = n->faces[i].material;
ERR_CONTINUE(mat < -1 || mat >= face_count.size());
int idx = mat == -1 ? face_count.size() - 1 : mat;
if (n->faces[i].smooth) {
Plane p(n->faces[i].vertices[0], n->faces[i].vertices[1], n->faces[i].vertices[2]);
for (int j = 0; j < 3; j++) {
Vector3 v = n->faces[i].vertices[j];
Vector3 add;
if (vec_map.lookup(v, add)) {
add += p.normal;
} else {
add = p.normal;
}
vec_map.set(v, add);
}
}
face_count.write[idx]++;
}
Vector<ShapeUpdateSurface> surfaces;
surfaces.resize(face_count.size());
//create arrays
for (int i = 0; i < surfaces.size(); i++) {
surfaces.write[i].vertices.resize(face_count[i] * 3);
surfaces.write[i].normals.resize(face_count[i] * 3);
surfaces.write[i].uvs.resize(face_count[i] * 3);
if (calculate_tangents) {
surfaces.write[i].tans.resize(face_count[i] * 3 * 4);
}
surfaces.write[i].last_added = 0;
if (i != surfaces.size() - 1) {
surfaces.write[i].material = n->materials[i];
}
surfaces.write[i].verticesw = surfaces.write[i].vertices.ptrw();
surfaces.write[i].normalsw = surfaces.write[i].normals.ptrw();
surfaces.write[i].uvsw = surfaces.write[i].uvs.ptrw();
if (calculate_tangents) {
surfaces.write[i].tansw = surfaces.write[i].tans.ptrw();
}
}
//fill arrays
{
for (int i = 0; i < n->faces.size(); i++) {
int order[3] = { 0, 1, 2 };
if (n->faces[i].invert) {
SWAP(order[1], order[2]);
}
int mat = n->faces[i].material;
ERR_CONTINUE(mat < -1 || mat >= face_count.size());
int idx = mat == -1 ? face_count.size() - 1 : mat;
int last = surfaces[idx].last_added;
Plane p(n->faces[i].vertices[0], n->faces[i].vertices[1], n->faces[i].vertices[2]);
for (int j = 0; j < 3; j++) {
Vector3 v = n->faces[i].vertices[j];
Vector3 normal = p.normal;
if (n->faces[i].smooth && vec_map.lookup(v, normal)) {
normal.normalize();
}
if (n->faces[i].invert) {
normal = -normal;
}
int k = last + order[j];
surfaces[idx].verticesw[k] = v;
surfaces[idx].uvsw[k] = n->faces[i].uvs[j];
surfaces[idx].normalsw[k] = normal;
if (calculate_tangents) {
// zero out our tangents for now
k *= 4;
surfaces[idx].tansw[k++] = 0.0;
surfaces[idx].tansw[k++] = 0.0;
surfaces[idx].tansw[k++] = 0.0;
surfaces[idx].tansw[k++] = 0.0;
}
}
surfaces.write[idx].last_added += 3;
}
}
root_mesh.instantiate();
//create surfaces
for (int i = 0; i < surfaces.size(); i++) {
// calculate tangents for this surface
bool have_tangents = calculate_tangents;
if (have_tangents) {
SMikkTSpaceInterface mkif;
mkif.m_getNormal = mikktGetNormal;
mkif.m_getNumFaces = mikktGetNumFaces;
mkif.m_getNumVerticesOfFace = mikktGetNumVerticesOfFace;
mkif.m_getPosition = mikktGetPosition;
mkif.m_getTexCoord = mikktGetTexCoord;
mkif.m_setTSpace = mikktSetTSpaceDefault;
mkif.m_setTSpaceBasic = nullptr;
SMikkTSpaceContext msc;
msc.m_pInterface = &mkif;
msc.m_pUserData = &surfaces.write[i];
have_tangents = genTangSpaceDefault(&msc);
}
if (surfaces[i].last_added == 0) {
continue;
}
// and convert to surface array
Array array;
array.resize(Mesh::ARRAY_MAX);
array[Mesh::ARRAY_VERTEX] = surfaces[i].vertices;
array[Mesh::ARRAY_NORMAL] = surfaces[i].normals;
array[Mesh::ARRAY_TEX_UV] = surfaces[i].uvs;
if (have_tangents) {
array[Mesh::ARRAY_TANGENT] = surfaces[i].tans;
}
int idx = root_mesh->get_surface_count();
root_mesh->add_surface_from_arrays(Mesh::PRIMITIVE_TRIANGLES, array);
root_mesh->surface_set_material(idx, surfaces[i].material);
}
set_base(root_mesh->get_rid());
_update_collision_faces();
}
void CSGShape3D::_update_collision_faces() {
if (use_collision && is_root_shape() && root_collision_shape.is_valid()) {
CSGBrush *n = _get_brush();
ERR_FAIL_COND_MSG(!n, "Cannot get CSGBrush.");
Vector<Vector3> physics_faces;
physics_faces.resize(n->faces.size() * 3);
Vector3 *physicsw = physics_faces.ptrw();
for (int i = 0; i < n->faces.size(); i++) {
int order[3] = { 0, 1, 2 };
if (n->faces[i].invert) {
SWAP(order[1], order[2]);
}
physicsw[i * 3 + 0] = n->faces[i].vertices[order[0]];
physicsw[i * 3 + 1] = n->faces[i].vertices[order[1]];
physicsw[i * 3 + 2] = n->faces[i].vertices[order[2]];
}
root_collision_shape->set_faces(physics_faces);
}
}
AABB CSGShape3D::get_aabb() const {
return node_aabb;
}
Vector<Vector3> CSGShape3D::get_brush_faces() {
ERR_FAIL_COND_V(!is_inside_tree(), Vector<Vector3>());
CSGBrush *b = _get_brush();
if (!b) {
return Vector<Vector3>();
}
Vector<Vector3> faces;
int fc = b->faces.size();
faces.resize(fc * 3);
{
Vector3 *w = faces.ptrw();
for (int i = 0; i < fc; i++) {
w[i * 3 + 0] = b->faces[i].vertices[0];
w[i * 3 + 1] = b->faces[i].vertices[1];
w[i * 3 + 2] = b->faces[i].vertices[2];
}
}
return faces;
}
void CSGShape3D::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_PARENTED: {
Node *parentn = get_parent();
if (parentn) {
parent_shape = Object::cast_to<CSGShape3D>(parentn);
if (parent_shape) {
set_base(RID());
root_mesh.unref();
}
}
if (!brush || parent_shape) {
// Update this node if uninitialized, or both this node and its new parent if it gets added to another CSG shape
_make_dirty();
}
last_visible = is_visible();
} break;
case NOTIFICATION_UNPARENTED: {
if (!is_root_shape()) {
// Update this node and its previous parent only if it's currently being removed from another CSG shape
_make_dirty(true); // Must be forced since is_root_shape() uses the previous parent
}
parent_shape = nullptr;
} break;
case NOTIFICATION_VISIBILITY_CHANGED: {
if (!is_root_shape() && last_visible != is_visible()) {
// Update this node's parent only if its own visibility has changed, not the visibility of parent nodes
parent_shape->_make_dirty();
}
last_visible = is_visible();
} break;
case NOTIFICATION_LOCAL_TRANSFORM_CHANGED: {
if (!is_root_shape()) {
// Update this node's parent only if its own transformation has changed, not the transformation of parent nodes
parent_shape->_make_dirty();
}
} break;
case NOTIFICATION_ENTER_TREE: {
if (use_collision && is_root_shape()) {
root_collision_shape.instantiate();
root_collision_instance = PhysicsServer3D::get_singleton()->body_create();
PhysicsServer3D::get_singleton()->body_set_mode(root_collision_instance, PhysicsServer3D::BODY_MODE_STATIC);
PhysicsServer3D::get_singleton()->body_set_state(root_collision_instance, PhysicsServer3D::BODY_STATE_TRANSFORM, get_global_transform());
PhysicsServer3D::get_singleton()->body_add_shape(root_collision_instance, root_collision_shape->get_rid());
PhysicsServer3D::get_singleton()->body_set_space(root_collision_instance, get_world_3d()->get_space());
PhysicsServer3D::get_singleton()->body_attach_object_instance_id(root_collision_instance, get_instance_id());
set_collision_layer(collision_layer);
set_collision_mask(collision_mask);
_update_collision_faces();
}
} break;
case NOTIFICATION_EXIT_TREE: {
if (use_collision && is_root_shape() && root_collision_instance.is_valid()) {
PhysicsServer3D::get_singleton()->free(root_collision_instance);
root_collision_instance = RID();
root_collision_shape.unref();
}
} break;
case NOTIFICATION_TRANSFORM_CHANGED: {
if (use_collision && is_root_shape() && root_collision_instance.is_valid()) {
PhysicsServer3D::get_singleton()->body_set_state(root_collision_instance, PhysicsServer3D::BODY_STATE_TRANSFORM, get_global_transform());
}
} break;
}
}
void CSGShape3D::set_operation(Operation p_operation) {
operation = p_operation;
_make_dirty();
update_gizmos();
}
CSGShape3D::Operation CSGShape3D::get_operation() const {
return operation;
}
void CSGShape3D::set_calculate_tangents(bool p_calculate_tangents) {
calculate_tangents = p_calculate_tangents;
_make_dirty();
}
bool CSGShape3D::is_calculating_tangents() const {
return calculate_tangents;
}
void CSGShape3D::_validate_property(PropertyInfo &property) const {
bool is_collision_prefixed = property.name.begins_with("collision_");
if ((is_collision_prefixed || property.name.begins_with("use_collision")) && is_inside_tree() && !is_root_shape()) {
//hide collision if not root
property.usage = PROPERTY_USAGE_NO_EDITOR;
} else if (is_collision_prefixed && !bool(get("use_collision"))) {
property.usage = PROPERTY_USAGE_NO_EDITOR | PROPERTY_USAGE_INTERNAL;
}
GeometryInstance3D::_validate_property(property);
}
Array CSGShape3D::get_meshes() const {
if (root_mesh.is_valid()) {
Array arr;
arr.resize(2);
arr[0] = Transform3D();
arr[1] = root_mesh;
return arr;
}
return Array();
}
void CSGShape3D::_bind_methods() {
ClassDB::bind_method(D_METHOD("_update_shape"), &CSGShape3D::_update_shape);
ClassDB::bind_method(D_METHOD("is_root_shape"), &CSGShape3D::is_root_shape);
ClassDB::bind_method(D_METHOD("set_operation", "operation"), &CSGShape3D::set_operation);
ClassDB::bind_method(D_METHOD("get_operation"), &CSGShape3D::get_operation);
ClassDB::bind_method(D_METHOD("set_snap", "snap"), &CSGShape3D::set_snap);
ClassDB::bind_method(D_METHOD("get_snap"), &CSGShape3D::get_snap);
ClassDB::bind_method(D_METHOD("set_use_collision", "operation"), &CSGShape3D::set_use_collision);
ClassDB::bind_method(D_METHOD("is_using_collision"), &CSGShape3D::is_using_collision);
ClassDB::bind_method(D_METHOD("set_collision_layer", "layer"), &CSGShape3D::set_collision_layer);
ClassDB::bind_method(D_METHOD("get_collision_layer"), &CSGShape3D::get_collision_layer);
ClassDB::bind_method(D_METHOD("set_collision_mask", "mask"), &CSGShape3D::set_collision_mask);
ClassDB::bind_method(D_METHOD("get_collision_mask"), &CSGShape3D::get_collision_mask);
ClassDB::bind_method(D_METHOD("set_collision_mask_value", "layer_number", "value"), &CSGShape3D::set_collision_mask_value);
ClassDB::bind_method(D_METHOD("get_collision_mask_value", "layer_number"), &CSGShape3D::get_collision_mask_value);
ClassDB::bind_method(D_METHOD("set_collision_layer_value", "layer_number", "value"), &CSGShape3D::set_collision_layer_value);
ClassDB::bind_method(D_METHOD("get_collision_layer_value", "layer_number"), &CSGShape3D::get_collision_layer_value);
ClassDB::bind_method(D_METHOD("set_calculate_tangents", "enabled"), &CSGShape3D::set_calculate_tangents);
ClassDB::bind_method(D_METHOD("is_calculating_tangents"), &CSGShape3D::is_calculating_tangents);
ClassDB::bind_method(D_METHOD("get_meshes"), &CSGShape3D::get_meshes);
ADD_PROPERTY(PropertyInfo(Variant::INT, "operation", PROPERTY_HINT_ENUM, "Union,Intersection,Subtraction"), "set_operation", "get_operation");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "snap", PROPERTY_HINT_RANGE, "0.0001,1,0.001"), "set_snap", "get_snap");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "calculate_tangents"), "set_calculate_tangents", "is_calculating_tangents");
ADD_GROUP("Collision", "collision_");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "use_collision"), "set_use_collision", "is_using_collision");
ADD_PROPERTY(PropertyInfo(Variant::INT, "collision_layer", PROPERTY_HINT_LAYERS_3D_PHYSICS), "set_collision_layer", "get_collision_layer");
ADD_PROPERTY(PropertyInfo(Variant::INT, "collision_mask", PROPERTY_HINT_LAYERS_3D_PHYSICS), "set_collision_mask", "get_collision_mask");
BIND_ENUM_CONSTANT(OPERATION_UNION);
BIND_ENUM_CONSTANT(OPERATION_INTERSECTION);
BIND_ENUM_CONSTANT(OPERATION_SUBTRACTION);
}
CSGShape3D::CSGShape3D() {
set_notify_local_transform(true);
}
CSGShape3D::~CSGShape3D() {
if (brush) {
memdelete(brush);
brush = nullptr;
}
}
//////////////////////////////////
CSGBrush *CSGCombiner3D::_build_brush() {
return memnew(CSGBrush); //does not build anything
}
CSGCombiner3D::CSGCombiner3D() {
}
/////////////////////
CSGBrush *CSGPrimitive3D::_create_brush_from_arrays(const Vector<Vector3> &p_vertices, const Vector<Vector2> &p_uv, const Vector<bool> &p_smooth, const Vector<Ref<Material>> &p_materials) {
CSGBrush *brush = memnew(CSGBrush);
Vector<bool> invert;
invert.resize(p_vertices.size() / 3);
{
int ic = invert.size();
bool *w = invert.ptrw();
for (int i = 0; i < ic; i++) {
w[i] = flip_faces;
}
}
brush->build_from_faces(p_vertices, p_uv, p_smooth, p_materials, invert);
return brush;
}
void CSGPrimitive3D::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_flip_faces", "flip_faces"), &CSGPrimitive3D::set_flip_faces);
ClassDB::bind_method(D_METHOD("get_flip_faces"), &CSGPrimitive3D::get_flip_faces);
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "flip_faces"), "set_flip_faces", "get_flip_faces");
}
void CSGPrimitive3D::set_flip_faces(bool p_invert) {
if (flip_faces == p_invert) {
return;
}
flip_faces = p_invert;
_make_dirty();
}
bool CSGPrimitive3D::get_flip_faces() {
return flip_faces;
}
CSGPrimitive3D::CSGPrimitive3D() {
flip_faces = false;
}
/////////////////////
CSGBrush *CSGMesh3D::_build_brush() {
if (!mesh.is_valid()) {
return memnew(CSGBrush);
}
Vector<Vector3> vertices;
Vector<bool> smooth;
Vector<Ref<Material>> materials;
Vector<Vector2> uvs;
Ref<Material> material = get_material();
for (int i = 0; i < mesh->get_surface_count(); i++) {
if (mesh->surface_get_primitive_type(i) != Mesh::PRIMITIVE_TRIANGLES) {
continue;
}
Array arrays = mesh->surface_get_arrays(i);
if (arrays.size() == 0) {
_make_dirty();
ERR_FAIL_COND_V(arrays.size() == 0, memnew(CSGBrush));
}
Vector<Vector3> avertices = arrays[Mesh::ARRAY_VERTEX];
if (avertices.size() == 0) {
continue;
}
const Vector3 *vr = avertices.ptr();
Vector<Vector3> anormals = arrays[Mesh::ARRAY_NORMAL];
const Vector3 *nr = nullptr;
if (anormals.size()) {
nr = anormals.ptr();
}
Vector<Vector2> auvs = arrays[Mesh::ARRAY_TEX_UV];
const Vector2 *uvr = nullptr;
if (auvs.size()) {
uvr = auvs.ptr();
}
Ref<Material> mat;
if (material.is_valid()) {
mat = material;
} else {
mat = mesh->surface_get_material(i);
}
Vector<int> aindices = arrays[Mesh::ARRAY_INDEX];
if (aindices.size()) {
int as = vertices.size();
int is = aindices.size();
vertices.resize(as + is);
smooth.resize((as + is) / 3);
materials.resize((as + is) / 3);
uvs.resize(as + is);
Vector3 *vw = vertices.ptrw();
bool *sw = smooth.ptrw();
Vector2 *uvw = uvs.ptrw();
Ref<Material> *mw = materials.ptrw();
const int *ir = aindices.ptr();
for (int j = 0; j < is; j += 3) {
Vector3 vertex[3];
Vector3 normal[3];
Vector2 uv[3];
for (int k = 0; k < 3; k++) {
int idx = ir[j + k];
vertex[k] = vr[idx];
if (nr) {
normal[k] = nr[idx];
}
if (uvr) {
uv[k] = uvr[idx];
}
}
bool flat = normal[0].is_equal_approx(normal[1]) && normal[0].is_equal_approx(normal[2]);
vw[as + j + 0] = vertex[0];
vw[as + j + 1] = vertex[1];
vw[as + j + 2] = vertex[2];
uvw[as + j + 0] = uv[0];
uvw[as + j + 1] = uv[1];
uvw[as + j + 2] = uv[2];
sw[(as + j) / 3] = !flat;
mw[(as + j) / 3] = mat;
}
} else {
int as = vertices.size();
int is = avertices.size();
vertices.resize(as + is);
smooth.resize((as + is) / 3);
uvs.resize(as + is);
materials.resize((as + is) / 3);
Vector3 *vw = vertices.ptrw();
bool *sw = smooth.ptrw();
Vector2 *uvw = uvs.ptrw();
Ref<Material> *mw = materials.ptrw();
for (int j = 0; j < is; j += 3) {
Vector3 vertex[3];
Vector3 normal[3];
Vector2 uv[3];
for (int k = 0; k < 3; k++) {
vertex[k] = vr[j + k];
if (nr) {
normal[k] = nr[j + k];
}
if (uvr) {
uv[k] = uvr[j + k];
}
}
bool flat = normal[0].is_equal_approx(normal[1]) && normal[0].is_equal_approx(normal[2]);
vw[as + j + 0] = vertex[0];
vw[as + j + 1] = vertex[1];
vw[as + j + 2] = vertex[2];
uvw[as + j + 0] = uv[0];
uvw[as + j + 1] = uv[1];
uvw[as + j + 2] = uv[2];
sw[(as + j) / 3] = !flat;
mw[(as + j) / 3] = mat;
}
}
}
if (vertices.size() == 0) {
return memnew(CSGBrush);
}
return _create_brush_from_arrays(vertices, uvs, smooth, materials);
}
void CSGMesh3D::_mesh_changed() {
_make_dirty();
update_gizmos();
}
void CSGMesh3D::set_material(const Ref<Material> &p_material) {
if (material == p_material) {
return;
}
material = p_material;
_make_dirty();
}
Ref<Material> CSGMesh3D::get_material() const {
return material;
}
void CSGMesh3D::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_mesh", "mesh"), &CSGMesh3D::set_mesh);
ClassDB::bind_method(D_METHOD("get_mesh"), &CSGMesh3D::get_mesh);
ClassDB::bind_method(D_METHOD("set_material", "material"), &CSGMesh3D::set_material);
ClassDB::bind_method(D_METHOD("get_material"), &CSGMesh3D::get_material);
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "mesh", PROPERTY_HINT_RESOURCE_TYPE, "Mesh"), "set_mesh", "get_mesh");
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "material", PROPERTY_HINT_RESOURCE_TYPE, "BaseMaterial3D,ShaderMaterial"), "set_material", "get_material");
}
void CSGMesh3D::set_mesh(const Ref<Mesh> &p_mesh) {
if (mesh == p_mesh) {
return;
}
if (mesh.is_valid()) {
mesh->disconnect("changed", callable_mp(this, &CSGMesh3D::_mesh_changed));
}
mesh = p_mesh;
if (mesh.is_valid()) {
mesh->connect("changed", callable_mp(this, &CSGMesh3D::_mesh_changed));
}
_mesh_changed();
}
Ref<Mesh> CSGMesh3D::get_mesh() {
return mesh;
}
////////////////////////////////
CSGBrush *CSGSphere3D::_build_brush() {
// set our bounding box
CSGBrush *brush = memnew(CSGBrush);
int face_count = rings * radial_segments * 2 - radial_segments * 2;
bool invert_val = get_flip_faces();
Ref<Material> material = get_material();
Vector<Vector3> faces;
Vector<Vector2> uvs;
Vector<bool> smooth;
Vector<Ref<Material>> materials;
Vector<bool> invert;
faces.resize(face_count * 3);
uvs.resize(face_count * 3);
smooth.resize(face_count);
materials.resize(face_count);
invert.resize(face_count);
{
Vector3 *facesw = faces.ptrw();
Vector2 *uvsw = uvs.ptrw();
bool *smoothw = smooth.ptrw();
Ref<Material> *materialsw = materials.ptrw();
bool *invertw = invert.ptrw();
// We want to follow an order that's convenient for UVs.
// For latitude step we start at the top and move down like in an image.
const double latitude_step = -Math_PI / rings;
const double longitude_step = Math_TAU / radial_segments;
int face = 0;
for (int i = 0; i < rings; i++) {
double latitude0 = latitude_step * i + Math_TAU / 4;
double cos0 = Math::cos(latitude0);
double sin0 = Math::sin(latitude0);
double v0 = double(i) / rings;
double latitude1 = latitude_step * (i + 1) + Math_TAU / 4;
double cos1 = Math::cos(latitude1);
double sin1 = Math::sin(latitude1);
double v1 = double(i + 1) / rings;
for (int j = 0; j < radial_segments; j++) {
double longitude0 = longitude_step * j;
// We give sin to X and cos to Z on purpose.
// This allows UVs to be CCW on +X so it maps to images well.
double x0 = Math::sin(longitude0);
double z0 = Math::cos(longitude0);
double u0 = double(j) / radial_segments;
double longitude1 = longitude_step * (j + 1);
if (j == radial_segments - 1) {
longitude1 = 0;
}
double x1 = Math::sin(longitude1);
double z1 = Math::cos(longitude1);
double u1 = double(j + 1) / radial_segments;
Vector3 v[4] = {
Vector3(x0 * cos0, sin0, z0 * cos0) * radius,
Vector3(x1 * cos0, sin0, z1 * cos0) * radius,
Vector3(x1 * cos1, sin1, z1 * cos1) * radius,
Vector3(x0 * cos1, sin1, z0 * cos1) * radius,
};
Vector2 u[4] = {
Vector2(u0, v0),
Vector2(u1, v0),
Vector2(u1, v1),
Vector2(u0, v1),
};
// Draw the first face, but skip this at the north pole (i == 0).
if (i > 0) {
facesw[face * 3 + 0] = v[0];
facesw[face * 3 + 1] = v[1];
facesw[face * 3 + 2] = v[2];
uvsw[face * 3 + 0] = u[0];