#OPENSCAD EXTRUDE ALONG PATH SERIES#

Using your right-hand, stick your thumb up and curl your fingers as if giving the thumbs-up sign, point your thumb into the face, and order the points in the direction your fingers curl. Another way to remember this ordering requirement is to use the right-hand rule. The back is viewed from the back, the bottom from the bottom, etc.

It is arbitrary which point you start with, but all faces must have points ordered in clockwise direction when looking at each face from outside inward. default values: polyhedron() yields: polyhedron(points = undef, faces = undef, convexity = 1)

For display problems, setting it to 10 should work fine for most cases. It has no effect on the polyhedron rendering. This parameter is needed only for correct display of the object in OpenCSG preview mode. The convexity parameter specifies the maximum number of faces a ray intersecting the object might penetrate. If points that describe a single face are not on the same plane, the face is automatically split into triangles as needed. Define enough faces to fully enclose the solid, with no overlap. Each face is a vector containing the indices (0 based) of 3 or more points from the points vector. faces Vector of faces that collectively enclose the solid. Each face is a vector containing the indices (0 based) of 3 points from the points vector. Vector of faces that collectively enclose the solid. N points are referenced, in the order defined, as 0 to N-1. Each point is in turn a vector,, of its coordinates. Parameters points Vector of 3d points or vertices.

#OPENSCAD EXTRUDE ALONG PATH SERIES#

Curved surfaces are approximated by a series of flat surfaces. It can be used to create any regular or irregular shape including those with concave as well as convex features. Ī polyhedron is the most general 3D primitive solid. $fa, $fs and $fn must be named parameters. $fn : fixed number of fragments in 360 degrees. $fs : minimum circumferential length of each fragment. center false (default), z ranges from 0 to h true, z ranges from -h/2 to +h/2 $fa : minimum angle (in degrees) of each fragment. Parameters h : height of the cylinder or cone r : radius of cylinder.

r1 & d1 define the base width, at, and r2 & d2 define the top width. Using r1 & r2 or d1 & d2 with either value of zero will make a cone shape, a non-zero non-equal value will produce a section of a cone (a Conical Frustum). The 2nd & 3rd positional parameters are r1 & r2, if r, d, d1 or d2 are used they must be named. If a parameter is named, all following parameters must also be named.Ĭylinder(h = height, r1 = BottomRadius, r2 = TopRadius, center = true/false) Parameter names are optional if given in the order shown here. When center is true, it is also centered vertically along the z axis. does not have as many small triangles on the poles of the sphereĬreates a cylinder or cone centered about the z axis. also creates a 2mm high resolution sphere but this one this creates a high resolution sphere with a 2mm radius $fa Fragment angle in degrees $fs Fragment size in mm $fn Resolution default values: sphere() yields: sphere($fn = 0, $fa = 12, $fs = 2, r = 1) For more information on these special variables look at: OpenSCAD_User_Manual/Other_Language_Features d Diameter. The resolution of the sphere is based on the size of the sphere and the $fa, $fs and $fn variables. center false (default), 1st (positive) octant, one corner at (0,0,0) true, cube is centered at (0,0,0) default values: cube() yields: cube(size =, center = false) Ĭreates a sphere at the origin of the coordinate system. Parameters: size single value, cube with all sides this length 3 value array, cube with dimensions x, y and z. Argument names are optional if given in the order shown here.Ĭube(size =, center = true/false) When center is true, the cube is centered on the origin.

4.3 Point repetitions in a polyhedron point listĬreates a cube in the first octant.

Openscad extrude along path