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= Primitives that are working properly = | = Primitives that are working properly = | ||

+ | = Arbitrary convex polyhedra = | ||

+ | == ARB8 == | ||

+ | This primitive is formed in POV-Ray using mesh.The mesh object can be used to efficiently store large numbers of triangles. | ||

+ | Example: | ||

+ | mesh{triangle{a,b,c}triangle{a,c,d}triangle{a,d,f} | ||

+ | triangle{g,h,c}triangle{e,f,g}triangle{e,g,h}} | ||

+ | |||

+ | == ARBN == | ||

+ | An arbn record is specified by N sets of intersecting planes, each defined by four coefficients: | ||

+ | |||

+ | * the {X, Y, Z} coefficients of the plane's normal vector pointing outward from the center of the arbn shape, and | ||

+ | *the perpendicular distance of that plane from the origin. | ||

+ | Its exported in POV-Ray by using intersection of Planes. | ||

+ | Example: | ||

+ | intersection{ plane{<x, y, z coefficients>, normal} .... } | ||

+ | |||

+ | |||

+ | = Ellipsoids = | ||

+ | == ELL == | ||

+ | This primitive is named as spheroid in POV-Ray. It is having | ||

+ | Center Vector, Radius Vector | ||

+ | Example: | ||

+ | Spheroid(<-1.50,3.00,-2.00>,<2.0,1.2,2.5> ) | ||

+ | |||

+ | == ELLG, ELL1 == | ||

+ | These primitives are exported under Ell | ||

+ | |||

+ | == EHY == | ||

+ | Elliptical Hyperboloid of BRL-CAD can be formed by POV-Ray. | ||

+ | Currently its coordinates are exported successfully and is done by using quadric equartions of POV-Ray | ||

+ | |||

+ | == EPA == | ||

+ | Elliptical Paraboloid in BRL-CAD. Its coordinates are exported successfully and is done by using quadric equartions of POV-Ray | ||

+ | |||

== Sphere == | == Sphere == | ||

Sphere is formed by | Sphere is formed by | ||

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sphere { Center, Radius [OBJECT_MODIFIERS...]} | sphere { Center, Radius [OBJECT_MODIFIERS...]} | ||

− | == | + | |

− | + | = Cones and Cylinders = | |

− | + | == Truncated General Cone == | |

+ | This primitive of BRL-CAD is formed by using Supercone of POV-Ray. | ||

Example: | Example: | ||

− | + | Supercone( //point A, axis Ax, axis Az:<0.0,0.0,0.0>, 0.5, 1.0, | |

+ | // point B, axis Bx, axis Bz:<0.0,1.5,0.0>, 0.7, 0.4)} | ||

== Cone == | == Cone == | ||

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Example: | Example: | ||

cone {<0, 1, 0>, 0.3 <1, 2, 3>, 1.0 texture { T_Stone25 scale 4 }} | cone {<0, 1, 0>, 0.3 <1, 2, 3>, 1.0 texture { T_Stone25 scale 4 }} | ||

+ | |||

+ | == TEC == | ||

+ | Its also exported under TGC. | ||

+ | |||

+ | == REC == | ||

+ | Its exported nuder TGC. | ||

+ | |||

+ | == TRC == | ||

+ | Its also under TGC | ||

== Cylender == | == Cylender == | ||

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cylinder { <0, 1, 0>,<1, 2, 3>,0.5 }} | cylinder { <0, 1, 0>,<1, 2, 3>,0.5 }} | ||

− | == | + | == RHC == |

− | + | Right Hyperbolic Cylinder in BRL-CAD. Coordinates are exported successfully. It can be formed by using function | |

− | + | function { pow(x,2) + y } | |

− | + | of POV-Ray. | |

− | + | ||

− | == | + | == RPC == |

− | + | Right Parabolic Cylinder in BRL-CAD. Coordinates are exported successfully. It also formed by the using functions of POV-Ray. | |

− | == | + | = Other Solids = |

− | + | ||

+ | == Torus == | ||

+ | Torus is created using | ||

+ | major radius and minor radius | ||

Example: | Example: | ||

− | + | torus { 4, 1 pigment { Green }} | |

− | + | ||

== Particle == | == Particle == | ||

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// point B, radius B:<0,1,0>, 0.40,) | // point B, radius B:<0,1,0>, 0.40,) | ||

− | == | + | == half == |

− | + | Half primitive of BRL-CAD is export into POV-Ray as Plane. | |

Example: | Example: | ||

− | + | plane { <Normal>, Distance } | |

− | + | ||

− | == | + | == BOT == |

− | + | Bag of triangles in BRL-CAD. Its exported by using triangles in POV-Ray. | |

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f_torus(x,y,z,1*(y+0.4),0.1 ) | f_torus(x,y,z,1*(y+0.4),0.1 ) | ||

− | == | + | == extrude == |

− | + | Currently, data of extrude is exported successfully. Remaining part is how to export sketch and relate it with extrude. | |

− | Currently | + | |

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= Primitives that are not under work yet = | = Primitives that are not under work yet = | ||

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== derived from 2d == | == derived from 2d == | ||

− | |||

=== revolve === | === revolve === | ||

=== dsp === | === dsp === | ||

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=== spline === | === spline === | ||

=== vol === | === vol === | ||

− | |||

=== poly === | === poly === | ||

=== hrt === | === hrt === | ||

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=== Sketch === | === Sketch === | ||

=== grip === | === grip === | ||

− | |||

=== binunif === | === binunif === | ||

=== submodel === | === submodel === |

This article provides knowledge about different types of geometric primitive objects that can be exported from BRL-CAD to POV-Ray geometry file. Their properties, functions used for them, parameters are discussed in section below.

To Know more about POV-Ray, here are some links below:

- Introduction to POV-Ray
- Adding Standard include files, Camera, Light source in POV-Ray Geometry file

Below is the list of primitives that are working/exported correctly, partially and not touched yet.

This primitive is formed in POV-Ray using mesh.The mesh object can be used to efficiently store large numbers of triangles. Example:

mesh{triangle{a,b,c}triangle{a,c,d}triangle{a,d,f} triangle{g,h,c}triangle{e,f,g}triangle{e,g,h}}

An arbn record is specified by N sets of intersecting planes, each defined by four coefficients:

- the {X, Y, Z} coefficients of the plane's normal vector pointing outward from the center of the arbn shape, and
- the perpendicular distance of that plane from the origin.

Its exported in POV-Ray by using intersection of Planes. Example:

intersection{ plane{<x, y, z coefficients>, normal} .... }

This primitive is named as spheroid in POV-Ray. It is having Center Vector, Radius Vector Example:

Spheroid(<-1.50,3.00,-2.00>,<2.0,1.2,2.5> )

These primitives are exported under Ell

Elliptical Hyperboloid of BRL-CAD can be formed by POV-Ray. Currently its coordinates are exported successfully and is done by using quadric equartions of POV-Ray

Elliptical Paraboloid in BRL-CAD. Its coordinates are exported successfully and is done by using quadric equartions of POV-Ray

Sphere is formed by Center and Radius Example:

sphere { Center, Radius [OBJECT_MODIFIERS...]}

This primitive of BRL-CAD is formed by using Supercone of POV-Ray. Example:

Supercone( //point A, axis Ax, axis Az:<0.0,0.0,0.0>, 0.5, 1.0, // point B, axis Bx, axis Bz:<0.0,1.5,0.0>, 0.7, 0.4)}

This primitive of BRL-CAD is named as Cone in POV-Ray. It is formed as Center and radius of one end Center and radius of other end Example:

cone {<0, 1, 0>, 0.3 <1, 2, 3>, 1.0 texture { T_Stone25 scale 4 }}

Its also exported under TGC.

Its exported nuder TGC.

Its also under TGC

This is formed by Cylender of POV-Ray. center_of_one_end, center_of_other_end and Radius Example:

cylinder { <0, 1, 0>,<1, 2, 3>,0.5 }}

Right Hyperbolic Cylinder in BRL-CAD. Coordinates are exported successfully. It can be formed by using function

function { pow(x,2) + y }

of POV-Ray.

Right Parabolic Cylinder in BRL-CAD. Coordinates are exported successfully. It also formed by the using functions of POV-Ray.

Torus is created using major radius and minor radius Example:

torus { 4, 1 pigment { Green }}

This primitives of BRL-CAD is formed in POV-Ray by using Round_Cone2 of POV-Ray. Example:

Round_Cone2( //point A, radius A: <0,0,0>,0.70, // point B, radius B:<0,1,0>, 0.40,)

Half primitive of BRL-CAD is export into POV-Ray as Plane. Example:

plane { <Normal>, Distance }

Bag of triangles in BRL-CAD. Its exported by using triangles in POV-Ray.

Elliptical torus of BRL-CAD can be formed by using some methods. One of them is by using function i.e. f_torus Example:

f_torus(x,y,z,1*(y+0.4),0.1 )

Currently, data of extrude is exported successfully. Remaining part is how to export sketch and relate it with extrude.