godot/modules/csg/csg.cpp

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/*  csg.cpp                                                               */
/**************************************************************************/
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#include "csg.h"

#include "core/math/geometry_2d.h"
#include "core/math/math_funcs.h"
#include "core/templates/sort_array.h"

// Static helper functions.

inline static bool is_snapable(const Vector3 &p_point1, const Vector3 &p_point2, real_t p_distance) { … }

inline static Vector2 interpolate_segment_uv(const Vector2 p_segment_points[2], const Vector2 p_uvs[2], const Vector2 &p_interpolation_point) { … }

inline static Vector2 interpolate_triangle_uv(const Vector2 p_vertices[3], const Vector2 p_uvs[3], const Vector2 &p_interpolation_point) { … }

static inline bool ray_intersects_triangle(const Vector3 &p_from, const Vector3 &p_dir, const Vector3 p_vertices[3], float p_tolerance, Vector3 &r_intersection_point) { … }

inline bool is_point_in_triangle(const Vector3 &p_point, const Vector3 p_vertices[3], int p_shifted = 0) { … }

inline static bool is_triangle_degenerate(const Vector2 p_vertices[3], real_t p_vertex_snap2) { … }

inline static bool are_segments_parallel(const Vector2 p_segment1_points[2], const Vector2 p_segment2_points[2], float p_vertex_snap2) { … }

// CSGBrush

void CSGBrush::_regen_face_aabbs() { … }

void CSGBrush::build_from_faces(const Vector<Vector3> &p_vertices, const Vector<Vector2> &p_uvs, const Vector<bool> &p_smooth, const Vector<Ref<Material>> &p_materials, const Vector<bool> &p_flip_faces) { … }

void CSGBrush::copy_from(const CSGBrush &p_brush, const Transform3D &p_xform) { … }

// CSGBrushOperation

void CSGBrushOperation::merge_brushes(Operation p_operation, const CSGBrush &p_brush_a, const CSGBrush &p_brush_b, CSGBrush &r_merged_brush, float p_vertex_snap) { … }

// CSGBrushOperation::MeshMerge

// Use a limit to speed up bvh and limit the depth.
#define BVH_LIMIT …

int CSGBrushOperation::MeshMerge::_create_bvh(FaceBVH *r_facebvhptr, FaceBVH **r_facebvhptrptr, int p_from, int p_size, int p_depth, int &r_max_depth, int &r_max_alloc) { … }

void CSGBrushOperation::MeshMerge::_add_distance(List<IntersectionDistance> &r_intersectionsA, List<IntersectionDistance> &r_intersectionsB, bool p_from_B, real_t p_distance_squared, bool p_is_conormal) const { … }

bool CSGBrushOperation::MeshMerge::_bvh_inside(FaceBVH *r_facebvhptr, int p_max_depth, int p_bvh_first, int p_face_idx) const { … }

void CSGBrushOperation::MeshMerge::mark_inside_faces() { … }

void CSGBrushOperation::MeshMerge::add_face(const Vector3 p_points[3], const Vector2 p_uvs[3], bool p_smooth, bool p_invert, const Ref<Material> &p_material, bool p_from_b) { … }

// CSGBrushOperation::Build2DFaces

int CSGBrushOperation::Build2DFaces::_get_point_idx(const Vector2 &p_point) { … }

int CSGBrushOperation::Build2DFaces::_add_vertex(const Vertex2D &p_vertex) { … }

void CSGBrushOperation::Build2DFaces::_add_vertex_idx_sorted(Vector<int> &r_vertex_indices, int p_new_vertex_index) { … }

void CSGBrushOperation::Build2DFaces::_merge_faces(const Vector<int> &p_segment_indices) { … }

void CSGBrushOperation::Build2DFaces::_find_edge_intersections(const Vector2 p_segment_points[2], Vector<int> &r_segment_indices) { … }

int CSGBrushOperation::Build2DFaces::_insert_point(const Vector2 &p_point) { … }

void CSGBrushOperation::Build2DFaces::insert(const CSGBrush &p_brush, int p_face_idx) { … }

void CSGBrushOperation::Build2DFaces::addFacesToMesh(MeshMerge &r_mesh_merge, bool p_smooth, bool p_invert, const Ref<Material> &p_material, bool p_from_b) { … }

CSGBrushOperation::Build2DFaces::Build2DFaces(const CSGBrush &p_brush, int p_face_idx, float p_vertex_snap2) : … { … }

void CSGBrushOperation::update_faces(const CSGBrush &p_brush_a, const int p_face_idx_a, const CSGBrush &p_brush_b, const int p_face_idx_b, Build2DFaceCollection &p_collection, float p_vertex_snap) { … }