Explain the primitive instancing, Mechanical Engineering

Assignment Help:

Primitive Instancing

In primitive instancing, the modeling system defines a set of primitive 3D solid shapes that are relevant to the application area. Primitive instances are similar to parameterized  solid objects. A parameterized primitive may be thought of as defining a family of parts whose members vary in a few parameters, an important CAD concept known as Group Technology. Primitive instancing is often used for relatively 'complex objects', such as gears and bolts, that are tedious to define in terms of Boolean combinations of simpler objects, yet are readily characterized by a few high-level parameters. It is easier to sew and create unambiguous and unique solids. The main disadvantage is clearly the limited domain of objects that can be handled. 

In primitive instancing, no provisions are made for combining objects to form a new higher-level object, using the regularized Boolean set operations. Thus, the only way to create a new kind of object is to write the code that defines it. Similarly, the routines that draw the objects or determine their mass properties must be written individually for each primitive. The main disadvantage is clearly the limited domain of objects that can be handled. The method is restricted to the primitives predefined in the system and they are quite limited.  

 


Related Discussions:- Explain the primitive instancing

Determine tangential and normal stresses, A rectangular block of material i...

A rectangular block of material is subjected to stresses 65N/mm 2 (tensile) in x- direction and 35 N/mm 2 (tensile) in perpendicular direction. It is accompanied by shear stress

Determine moment of the force about the origin, (a) What do you understand ...

(a) What do you understand by couple moment. Is it a free vector ? (b) A force F = 10i + 6j - 6k N performs at a position (10, 3, 4) m relative to a coordinates system. Determin

Determine the deflection of the spring, Determine the deflection of the spr...

Determine the deflection of the spring: A close coiled helical spring deflects 25 mm under a certain axial load. Determine the deflection of the second spring under the simila

Compute the outside diameter of the shaft, Compute the outside diameter of ...

Compute the outside diameter of the shaft: A hollow shaft of diameter ratio is 0.4 is needed to transit 600 kW at 120 rpm. The maximum torque being 20% greater than the mean t

Constant pressure cycle, Diesel (Constant Pressure Cycle): 5-1...

Diesel (Constant Pressure Cycle): 5-1 Suction Stroke at constant pressure 1-2 Adiabatic Compression 2-3 Heat Addition at constant pressure 3-4 Adiabatic Expan

Heat exchangers for plant design, Q. Heat exchangers for plant design? ...

Q. Heat exchangers for plant design? All exchangers shall be arranged to be readily dismantled for cleaning and maintenance. Cooling and heating streams generally flow against

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd