3DScheme & 3DScheme Pro
Version 2.0

The Solid Modeler: Model Representation

Attributes

• get one or more of an entity's attributes
• attach an attribute to an entity
• replace/delete one of an entity's attributes

Construction Geometry

• create temporary curves of various kinds
• create a curve from an edge
• create a surface from a face
• get/set the parameter/position/tangent gvector at the start/end of a curve/edge
• evaluate the position/tangent gvector/derivative(s) at specified parameter(s) on a curve/edge/surface
• intersect two curves/edges
• get the length of a curve/edge
• get the normal gvector to a curve/edge
• get the parameter of a position on a curve/edge or at a given arc distance along a curve/edge

Entities

• get an entity's extrema box
• get all the coedges/edges/faces/loops/lumps/shells/vertices/wires associated with an entity
• get/set an entity's display color
• copy an entity
• facet an entity
• count/delete/display/print/write-to-file the facets applied to an entity
• delete an entity (together with any attributes that may be attached to it)
• display/undisplay an entity
• determine if an entity is displayed/faceted/highlighted
• apply a body's transform to all its underlying geometry
• get/set the color/reflectance properties/transparency properties of the material associated with a geometric entity
• get/set the file name of the texture in the material associated with a geometric entity
• get/set the material/refinement(s)/texture space associated with a geometric entity
• get the top level owner of an entity
• get the part to which an entity belongs
• transfer an entity to another part
• get/set the render sidedness of an entity
• mark an entity as to whether it should be rendered
• create a spline equivalent of an entity
• apply a transform to an entity
• get an entity from an ID number/pick-event

Mathematics

• create/copy/reverse/scale/unitize a gvector
• add/subtract gvectors
• calculate dot/cross products of gvectors
• find the length of a gvector
• find the gvector from one position to another
• determine if two gvectors are parallel/perpendicular
• set any/all component(s) of a gvector
• get any component of a gvector
• apply a transform to a gvector
• create/copy a parametric position
• find the distance between two parametric positions
• set any/all component(s) of a parametric position
• get any component of a parametric position
• create/copy a position
• get a position from a list of positions that is closest to a given position
• find the distance between two positions
• interpolate a position between two positions
• offset a position by a gvector
• project a position onto a line/plane
• set any/all component(s) of a position
• get any component of a position
• apply a transform to a position

Mesh Surfaces

• create a body consisting of a single mesh surface
• create mesh surface elements compatible with the curve elements of its boundary
• read a mesh from a specialized file type

Model Geometry

• get/set the center/radius of a circular/elliptical curve/edge
• get/set the start/end angle of a circular/elliptical curve/edge
• get a gvector that determines the major axis of an elliptical curve/edge
• set the direction of the major axis of an elliptical curve/edge
• get the normal gvector to the plane containing a planar curve/edge
• set the normal gvector to a circular/elliptical curve/edge
• get the parameter/position/tangent gvector at the start/end of a curve/edge
• find the position/tangent gvector/derivatives of a curve/edge at a given parameter
• set the direction/start position/end position of a linear curve/edge
• create a curve from an edge and vice versa
• intersect two curves/edges
• find the length of a curve/edge
• get the parameter value at a specified position on or a specified arc length along a curve/edge
• get the normal projection of a position onto a curve/edge
• get a position on a curve/edge that is closest to a given pick-ray
• modify the transform of a curve/edge
• create edges of various kinds
• apply a transform to entities
• find the area of a face
• create faces of various kinds
• get a ray along the axis of a cylindrical face
• get the radius of a cylindrical face
• intersect two faces
• offset a face
• get a normal gvector/plane-specifying ray for a planar face
• get a position on a face that is closest to a given position and a normal gvector to the face at that position
• remove/unhook a face from body
• reverse the sense of a face
• get the center/radius of a spherical face
• create spline face using control points/a grid of points
• uncover a face, removing its surface but leaving its edges
• get the position of a point/vertex
• create a point at a specified position
• get the surface area/mass properties of a solid
• create a solid block/cone/cylinder/prism/pyramid/sphere/torus
• reverse all the lumps within a body
• classify a position with respect to a solid
• join two bodies along their intersection graph
• imprint their intersection graph onto the faces of two bodies
• perform regularized/non-regularized intersections/subtractions/unions of bodies
• slice a solid with a plane to produce a wire body
• get a position where a ray intersects a solid
• create/extend a solid by revolving a face/wire about an axis
• get the intersection graph between two bodies as a wire body
• split a body's periodic faces along their seams
• join two bodies along edges or vertices of identical geometry
• create/extend a solid by sweeping a planar face/wire along a gvector
• create a rectangular block with a spline surface top
• create/copy/print a spline grid data structure
• get/set a single point in a spline grid data structure
• set a list of points defining a spline grid into a spline grid data structure
• get/set the point tolerance used when approximating a spline surface from a grid of points
• get/set starting/ending tangent gvectors in either parametric direction of a spline surface
• set a list of tangent gvectors to determine the starting/ending boundary conditions of a spline surface
• get the number of rows/columns in a spline grid data structure
• create/copy/print a spline surface data structure
• get the number of control points from a spline surface
• get/set a single control point from a spline surface
• get/set a single u or v parameter value for a spline surface
• set a list of control points into a spline surface data structure
• get/set a single knot value for a spline surface
• set a list of knots for a spline surface
• count the knots in either parametric direction for a spline surface
• get/set the weight for a single control point of a rational spline surface
• set a list of weights for the control points of a rational spline surface
• create a surface from a face
• get the area of a planar wire body
• get the length of a wire body
• offset a wire body
• create a planar wire body from a sequence of positions and numerical factors that determine curve shape between successive positions
• create a rectilinear wire body from a list of positions
• create a wire body from a list of edges
• reverse the sense of a wire

Model Topology

• combine a list of solid and/or wire bodies into a single body
• separate a single body into disjoint one-lump bodies
• get a chain of edges from one or two edges
• determine if an edge is reversed relative to a face
• split an edge into two at a specified position
• trim a list of edges to form a continuous chain in which each successive pair share a common endpoint
• trim two edges to their point of intersection
• trim the middle out of an edge
• trim an edge to the bounds of a specified position or another edge
• get the coedges/edges/faces/loops/lumps/shells/vertices/wires from one or more entities
• get the top level owner of an entity
• get the loops shared by two entities
• create the spline equivalent of an entity
• transform a single-sided sheet body into a double-sided sheet body
• create a sheet body from a wire body
• modify a sheet body by covering each of its simple loops of external edges by a face
• convert a closed sheet body into a solid
• create a sheet body from a face/planar wire body
• create a sheet body that interpolates a sequence of wires

Precision and Tolerance

• get/set the system tolerances

Text

• get/set a text entity's font/font size/location/string
• create a text entity

Transforms

• modify the transform of a curve/edge
• apply a body's transform to all its underlying geometry
• apply a transform to a gvector/position/one or more entities
• create a transform that takes an object from model space to the space defined by given origin and axes
• compose two transforms
• copy/invert a transform
• create an identity transform
• create a reflection/rotation/scaling/translation transform
• create a work coordinate system from a transform
• get the transform from the active WCS to model space
• get the transform from the active WCS to a specified WCS

Work Coordinate Systems

• get/set the display color of the active WCS
• get/set the active WCS
• create a work coordinate system from a transform
• get the transform from the active WCS to model space
• get the transform from the active WCS to a specified WCS
• get the origin/x-axis/y-axis/z-axis of the active coordinate system
• create a work coordinate system

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Last modified: May 27, 1998 Copyright © 1998 Schemers Incorporated Please EMail comments to emartin@schemers.com