extract explicit mesh with topology information from implicit surfaces with boolean operations, and do surface/volume integrating on them.
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#pragma once
#include <stdint.h>
typedef struct {
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double x, y, z;
} raw_vector3d_t;
typedef enum {
PRIMITIVE_TYPE_CONSTANT,
PRIMITIVE_TYPE_PLANE,
PRIMITIVE_TYPE_SPHERE,
PRIMITIVE_TYPE_CYLINDER,
PRIMITIVE_TYPE_CONE,
PRIMITIVE_TYPE_BOX,
PRIMITIVE_TYPE_MESH,
PRIMITIVE_TYPE_EXTRUDE_POLYLINE,
PRIMITIVE_TYPE_EXTRUDE_HELIXLINE
} primitive_type;
// Placeholder, currently used to represent empty body
typedef struct {
double value; // Use 0 to represent an empty body
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} constant_descriptor_t;
// Plane descriptor
typedef struct {
raw_vector3d_t point; // The base point of the plane
raw_vector3d_t normal; // The normal of the plane
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} plane_descriptor_t;
// Sphere descriptor
typedef struct {
raw_vector3d_t center; // The ceter of the sphere
double radius; // The radius of the sphere
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} sphere_descriptor_t;
// Cylinder descriptor
typedef struct {
raw_vector3d_t bottom_origion; // The origion of bottom face of the cylinder
double radius; // The radius of the cylinder
raw_vector3d_t offset; // The vector from the origion of bottom face to the origion of the top face
} cylinder_descriptor_t;
typedef struct {
raw_vector3d_t top_point; // The origion of top face of the cone
raw_vector3d_t bottom_point; // The origion of bottom face of the cone
double radius1; // The radius of the top face
double radius2; // The radius of the bottom face
} cone_descriptor_t;
typedef struct {
raw_vector3d_t center; // The center of the box
raw_vector3d_t half_size; // The { half_length, half_width, half_height} of the box
} box_descriptor_t;
// Mesh descriptor
typedef struct {
uint32_t begin_index;
uint32_t vertex_count;
} polygon_face_descriptor_t;
typedef struct {
uint32_t point_number; // The point number of the mesh
uint32_t face_number; // The face number of the mesh
raw_vector3d_t* points; // The points of the mesh
uint32_t* indices; // The indices from face to point
polygon_face_descriptor_t* faces; // Two-dimensional array, Use [begin index, length] to represent a face
} mesh_descriptor_t;
// Extrude descriptor
typedef struct {
uint32_t point_number; // The point number of the polyline
raw_vector3d_t* points; // The point of the polyline
uint32_t bulge_number; // The bulge number of the polyline
double* bulges; // The bulge of each edge
raw_vector3d_t reference_normal; // The reference normal of the polyline
bool is_close; // Whether the polyline is close
} polyline_descriptor_t;
typedef struct {
raw_vector3d_t axis_start; // The start point of the helix line
raw_vector3d_t axis_end; // The end point of the helix line
double radius; // The radius of the helix line
double advance_per_round; // he advance per round of the helix line
raw_vector3d_t start_direction; // The direction from axisStart to start of the helix line
} helixline_descriptor_t;
// Note : In profiles, The first polyline is outer boundary, and the ohters is internal holes
typedef struct {
uint32_t profile_number; // The profiles number of the extruded solid
polyline_descriptor_t* profiles; // The profiles of the extruded solid
polyline_descriptor_t axis; // The axis of the extruded solid
} extrude_polyline_descriptor_t;
typedef struct {
uint32_t profile_number; // The profiles number of the extruded solid
polyline_descriptor_t* profiles; // The profiles of the extruded solid
helixline_descriptor_t axis; // The axis of the extruded solid
} extrude_helixline_descriptor_t;