Containment test - visible surface detection, Computer Graphics

Assignment Help:

Containment Test -  visible surface detection

Test: That is Containment test: it can be either comprised (contained) or surrounding polygon, if intersection test fails. Therefore we perform the containment test for this type of test we have the subsequent three cases, demonstrated in the figures (a),(b) and also (c).

a)   P1 contains P2. b)   P2 contains P1.

c)   P1 and P2 are disjoint.

1838_Containment Test - Visible Surface Detection.png

                                         Figure (a): P1 contained P2          (b) P2 contained P1           (c) P1and P2 are disjoint

Case a: Confirm a vertex point of P2 lies inside of P1. Whether the result is true, P2 is entirely within of P1.

Case b: Verify where P2 contains a vertex point of P1, if the consequence of case a is not true. If the result is true, then P2 comprises P1.

Case c: If both case-a and case-b as containment test such are failed then we decided to disjoint P1 and P2.

For a known screen area, we remain a PVPL that is potentially visible polygons list, those in categories 1, 2 and 3. Disjoint polygons are certainly not visible. Also, notice that on subdivision of a screen region, disjoint and surrounding polygons keep in surrounding and disjoint polygons of the newly formed regions. Thus, only intersecting and contained polygons necessitate to be reclassified.


Related Discussions:- Containment test - visible surface detection

Animation and games - cad and cam, Animation and Games - CAD and CAM I...

Animation and Games - CAD and CAM In our childhood, we all have seen that the flip books of cricketers that came free with some soft drink and where some pictures of similar p

Translation, Translation, Rotation and Scaling -  output primitives 1. ...

Translation, Rotation and Scaling -  output primitives 1. Two basic approaches used in character generation are - Bitmap method and outline method.  2. All 2D geometric tran

Softwares and hardwares for computer animation, Softwares and Hardwares for...

Softwares and Hardwares for Computer Animation The categories of both software as well as hardware needed to work on animation are now to be discussed. Computer animation can b

Briefly explain how the median filter works, QUESTION 1 (a) Write a run...

QUESTION 1 (a) Write a run method in Image J environment for the following cases Contrast and Brightness Histogram Generation Histogram Equalisation   (b)

B-spline curves - uniform b-splines and de boor algorithm, B-spline curves ...

B-spline curves are piecewise smooth polynomial curves.  B-spline curves are defined over an interval which has been partitioned into sub-intervals. On each subinterval B-sp

What is computer graphics?, What Is Computer Graphics? The term Graphi...

What Is Computer Graphics? The term Graphics mean is Graphical Tricks. All image or picture is actually a graph and when various mathematical tricks are utilized to manipulate

Enumerate the use of data goggles- virtual reality, Enumerate the use of Da...

Enumerate the use of Data goggles- Virtual Reality Data goggles/helmets - These use optical systems and display screens which send 3D images to the eyes. Motion sensors mea

Linearly interpolate - modeling and rendering, Linearly interpolate - Model...

Linearly interpolate - Modeling and Rendering I 4 = I 1 + t (I 2 - I 1 ); here t = (|y 1 - y 2 |)/(|y 1 - y 2 |) I D = I A + t (I B - I A ); here t = (|AD|)/(|AB|)

Application of coherence in visible surface detection method, explainapplic...

explainapplication of coherence in visible surface detection method

Midpoint circle generation algorithm - 2d shape primitives, Midpoint Circle...

Midpoint Circle Generation Algorithm   Just as a line drawing algorithm approximates infinite number of points on a line segment by only a finite number of pixels, a circle dra

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