Primitive parameter edition

The parameters of a primitive are computed automatically based on the shapes of the primitive itself, the ports, and the parts (if required). In some cases for which the CAD was not built using Parasolid; the topology of the CAD body shape is not correctly interpreted and the parameter is not computed. In that case you can enter an expression to get the required parameter.

The expression interpreter uses JavaScript programming language. A dedicated JavaScript object "CAD" allows you to perform geometric measurement on the CAD body. The JavaScript Math object allows you also to perform mathematical tasks on numbers.

Here is an example of calculating the curvature radius of a bend:

Copy

Cad.distance(port_a, port_b)/(2*Math.sin(Math.PI/180*Cad.angle
(port_a, port_b)/2)+Cad.radius(port_a, Inner)

JavaScript Cad object

Method	Description
angle(, )	Returns the angle between two CAD entities that are defined by a port or a part
angle_to_plane(, , )	Returns the angle between a CAD entity that is defined by a port, a part, or a primitive and a plane of the frame. The frame is either the absolute frame, the relative frame or the frame of the primitive
area()	Returns the area of the surface of a CAD entity that is defined by a port, a part, or a primitive
center_of_gravity(, , [optional])	Returns the coordinates of the center of gravity of a CAD entity defined by a port, a part, or a primitive. The frame is either the absolute frame, the relative frame or the frame of the primitive. As an option only one of the three coordinates values is returned
contour(, , , [optional])	Returns the list of the coordinates of the points that defined a contour. The frame is either the absolute frame, the relative frame or the frame of the primitive. As an option only two of the three coordinates values is returned
distance(, )	Returns the distance between two CAD entities that are defined by a port or a part
inertia_matrix(, <row index (0 to 2)> [optional], <column index (0 to 2)> [optional])	Returns the matrix of inertia of a CAD solid body that is defined by a port, a part or a primitive. As option only one element of the matrix is returned
length()	Returns the length of an edge based on the CAD entity that is defined by a port or a part
mass()	Returns the mass of a CAD solid body that is defined by a port, a part, or a primitive
position(, , [optional])	Returns the coordinates of a point of a CAD entity defined by a port, a part, or a primitive. The frame is either the absolute frame, the relative frame or the frame of the primitive. As an option only one of the three coordinates values is returned
property(, )	Returns the property of a CAD entity that is defined in the Object inspector in CAD Import
radius(, )	Returns the radius of a CAD entity defined by a port, a part, or a primitive. The radius is either the inner radius (circle) or the curvature radius (bend)
topology(, , )	Returns the topology of a CAD entity that is defined by a port, a part, or a primitive. The topology is the list of all the faces (Face), all the edges (Edge), or all the points (Vertex) that are part of the CAD entity. The frame is either the absolute frame, the relative frame or the frame of the primitive
volume()	Returns the volume of a CAD solid body that is defined by a port, a part, or a primitive

JavaScript Math object

Method	Description
abs(x)	Returns the absolute value of x
acos(x)	Returns the arccosine of x, in radians
asin(x)	Returns the arcsine of x, in radians
atan(x)	Returns the arctangent of x as a numeric value between -PI/2 and PI/2 radians
atan2(x)	Returns the arctangent of the quotient of its arguments
ceil(x)	Returns the value of x rounded up to its nearest integer
cos(x)	Returns the cosine of x (x is in radians)
exp(x)	Returns the value of Ex
floor(x)	Returns the value of x rounded down to its nearest integer
log(x)	Returns the natural logarithm (base E) of x
max(x, y, z, …, n)	Returns the number with the highest value
min(x, y, z, …, n)	Returns the number with the lowest value
pow(x, y)	Returns the value of x to the power of y
random(x)	Returns a random value between 0 and 1
round(x)	Returns the value of x rounded to its nearest integer
sin(x)	Returns the sine of x (x is in radians)
sqrt(x)	Returns the square root of x
tan(x)	Returns the tangent of an angle