Polygon clipping algorithm, Computer Graphics

Assignment Help:

Write a polygon clipping algorithm to clip a polygon against rectangular clipping are.

Read the vertices of polygon to be clipped. 2. Read the coordinates of the rectangular clipping area against which it has to be clipped. 3. Considering the edge of rectangular area one at a time we apply the following algorithm. 4. /* p is the input vertex, vertex under consideration S is the previous vertex. F is the first point. E is the edge under consideration (of rectangular 7 area against which it has to be clipped) */ Input vertex P 5. If P is the point store it in a variable say F and proceed to step 7. 6. If P is not the first point then if edge 5t intersect edge E under consideration. Computer the intersection point 1 Output vertex 1 else proceed to step 7. 7. Store P in variable S (S=P) 8. If S is on left side of edge E output vertex S. 9. Repeat steps 4 to 8 till all the vertices are processed 10. /* for closing polygon */ if 3f intersect E Computer intersection point 1 output vertex 1 11. Repeat the above steps (4 to 10) with new output polygon obtained from step 10 for other edges of rectangular area under consideration. 

 


Related Discussions:- Polygon clipping algorithm

Displacement mapping, Implement displacement mapping and bump mapping on a ...

Implement displacement mapping and bump mapping on a sphere. The displacement can be whatever your choice. The bump map can be whatever your choice as well.

Gui and graphics, Newspapers exchange news by using news agencies (such as ...

Newspapers exchange news by using news agencies (such as Reuters and ITARTASS). A newspaper registers at a news agency and sends all its news to the agency. The news agency collect

Texturing - texture coordinate, Background Texturing is like wallpaperin...

Background Texturing is like wallpapering; you are pasting an image onto the OpenGL Quad primitive.  Recall that GL_QUAD is specified by four vertices.  An image, or a texture,

What are the steps to mapping artwork to an object, Question 1: (a) How...

Question 1: (a) How can you select and manipulate individual objects in a group? (b) How do you resize an object? Explain how you determine the point from which the object r

Normalization transformation, what is normalization transformation?why is i...

what is normalization transformation?why is it needed and important?give simple example also.

Education - applications for computer animation, Education - applications f...

Education - applications for computer animation Currently, studies of subjects as Art, Physics, Maths, Chemistry, Biology, Engineering, Medicine, and Technology are fairly simp

Mpeg-2 , MPEG-2 : MPEG-2 that is Moving Picture Experts Group format 2 is ...

MPEG-2 : MPEG-2 that is Moving Picture Experts Group format 2 is the standard used through DVD and is of a much higher quality than MPEG- 1. This format gives for 720 x 480 resolu

Phong model or phong specular reflection model, Phong Model or Phong Specul...

Phong Model or Phong Specular Reflection Model It is an empirical model that is not based on physics, although physical observation. Phong observed here for extremely shiny su

Transformation, Define transformation. Explain all basic transformation

Define transformation. Explain all basic transformation

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