KP3213 CAD/CAM. Lecture 3 snap shot Objective of Lecture 4 Lecture 4: Curve representation and solid modelling Book review of week 2 & 3. Curve Representation. Curve Representation. Curve Representation. Coordinates are given by continuous parameter single valued
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Coordinates are given by continuous parameter single valued
polynomial X=x(u), Y=y(u) and Z=z(u). Variable u is constraint
By Closed interval such as [0,1]
3-D solid model captured complete geometry of an object
-inside and outside of the object
-volume and intersection of the object can be calculated
-Hidden-surface/line removal and a shaded image can be produced
Internal representation vs external representation
Internal representation is how computer stores the model.
External representation is how picture or image is displayed
Geometry and Topology
. . .
E5 E6 E7 E8 E10
E1 E2 E3 E4
. . .
V5 V6 V7 V8 V10
V1 V2 V3 V4
. . .
Book Review for Week 3