Liang-Barsky Line Clipping Algorithm

Nov 19, 2014

750 likes | 1.58k Views

Liang-Barsky Line Clipping Algorithm. u. u. u.

Share Presentation

Embed Code

Link

lacy-bass

Download Presentation

Liang-Barsky Line Clipping Algorithm

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

Liang-Barsky Line Clipping Algorithm

u u u

Clipping

Clipping. Aaron Bloomfield CS 445: Introduction to Graphics Fall 2006 (Slide set originally by David Luebke). Outline. Review Clipping Basics Cohen-Sutherland Line Clipping Clipping Polygons Sutherland-Hodgman Clipping Perspective Clipping. Recap: Homogeneous Coords. Intuitively:

1.12k views • 59 slides

Clipping

Clipping. Pradondet Nilagupta. Learning outcomes for this lecture. You will understand What is meant by ‘ clipping ’ 2D clipping concepts 3D clipping concepts Different kinds of clipping The Cohen-Sutherland 2D region-coding clipping technique Be able to

2.28k views • 59 slides

Line Algorithm

Line Algorithm. Pradondet Nilagupta Dept. of Computer Engineering Kasetsart University. Why Lines?. Lines most common 2D primitive - done 100s or 1000s of times each frame even 3D wireframes are eventually 2D lines!

676 views • 16 slides

The Graphics Pipeline: Line Clipping & Line Rasterization

The Graphics Pipeline: Line Clipping & Line Rasterization. Last Time?. Modeling Transformations. Illumination (Shading). Viewing Transformation (Perspective / Orthographic). Clipping. Projection (to Screen Space). Scan Conversion (Rasterization). Visibility / Display.

982 views • 62 slides

Effective Visualization of the Sutherland Hodgman Clipping Algorithm

Effective Visualization of the Sutherland Hodgman Clipping Algorithm. Alejandro Carrasquilla University of Wisconsin – Oshkosh carraa48@uwosh.edu. Shawn Recker Grove City College reckerst1@gcc.edu. Introduction

153 views • 1 slides

Clipping

Clipping. Concepts, Algorithms for line clipping. Clipping - 10/16/12. Line Clipping. Clipping endpoints If and , the point is inside. Endpoint analysis for lines: if both endpoints in , do “trivial acceptance” if one endpoint inside, one outside, must clip

461 views • 15 slides

Line Clipping in 2D

Line Clipping in 2D. Why would we clip?. We clip objects to our view before rasterization. Why? To avoid unnecessary work: pixel coordinate calculations parameter interpolation Any other reasons?. 2D Viewing. What do we want out of clipping?. Clipping window. (xwmin, ywmax).

633 views • 28 slides

Mid Point Line Drawing Algorithm

Mid Point Line Drawing Algorithm. Assist. Prof. Dr. Ahmet Sayar Computer Engineering Department Computer Graphics Course Kocaeli University Fall 2013. How to Improve It?. Question: if we draw the current pixel, where is the next pixel? Next column, E or NE direction.

784 views • 30 slides

Clipping

Clipping. Before clipping…. After clipping…. Point Clipping. Line Clipping. Line Clipping (cont). Line Clipping (cont). Cohen - Sutherland Line Clipping. Cohen - Sutherland Line Clipping (cont).

337 views • 11 slides

Bresenham’s Line algorithm

Bresenham’s Line algorithm. #include<stdlib.h> #include<math.h> Int round( const float a) { Return int(a+0.5); }. Void lineBres(int x0,int y0,int xEnd,int yEnd) { Int dx=fabs(xEnd-x0),dy=fabs(yEnd-y0); Int p=2*dy –dx; Int twoDy=2*dy, twoDyMinusDx=2*(dy-dx); Int x,y;. If(x0>xEnd)

240 views • 13 slides

Bresenham’s Line Algorithm

Bresenham’s Line Algorithm. The Problem (cont…). What happens when we try to draw this on a pixel based display?. How do we choose which pixels to turn on?.

488 views • 22 slides

Clipping

Clipping. Concepts , Algorithms for line clipping. Clipping - 10/16/ 14. Line Clipping in 2D. Clipping endpoints If and , the point is inside the clip rectangle. Endpoint analysis for lines: if both endpoints in , do “trivial acceptance” if one endpoint inside, one outside, must clip

428 views • 16 slides

Line Clipping

( x 1 , y 1 ). y max y min. ( x 0 , y 0 ). x min x max. Line Clipping. Line clipping against rectangles The problem : Given a set of 2D lines or polygons and a window, clip the lines or polygons to their regions that are inside the window. Motivations. Efficiency

354 views • 17 slides

Line Drawing by Algorithm

Line Drawing by Algorithm. Line Drawing Algorithms. Line drawn as pixels Graphics system Projects the endpoints to their pixel locations in the frame buffer (screen coordinates as integers) Finds a path of pixels between the two Loads the color

308 views • 16 slides

Clipping

2D Clipping. The process of clipping decides which part, if any, of a primitive lies inside the window. The algorithms used for line clipping can be divided into two parts: (1) Check all the line segments and separate those that intersect the

440 views • 10 slides

The Graphics Pipeline: Clipping & Line Rasterization

The Graphics Pipeline: Clipping & Line Rasterization. Last Time?. Modeling Transformations. Illumination (Shading). Viewing Transformation (Perspective / Orthographic). Clipping. Projection (to Screen Space). Scan Conversion (Rasterization). Visibility / Display.

1.21k views • 85 slides

Cohen Sutherland Line Clipping Algorithm

The main motto of sirhelpme website is to provide free education, free notes, free pdfâ€™s, handwritten pdf along with interview questions. Also, we provide notes in various domains like C, C , Java, Computer Graphics, C interview questions, C interview questions and many more (http://www.sirhelpme.com/)

1.39k views • 9 slides

Bresenham’s Line Algorithm

Bresenham’s Line Algorithm. The Problem (cont…). What happens when we try to draw this on a pixel based display?. How do we choose which pixels to turn on?.

1.15k views • 22 slides

Clipping:

Clipping:. Clipping is a process of dividing an object into visible and invisible positions and displaying the visible portion and discarding the invisible portion. Generally we have clipping algorithms for the following primitive types. Point clipping Line clipping Area clipping (Polygon)

325 views • 25 slides

More Related

Liang-Barsky Line Clipping Algorithm

Liang-Barsky Line Clipping Algorithm

Presentation Transcript

Clipping

Clipping

Line Algorithm

The Graphics Pipeline: Line Clipping &amp; Line Rasterization

Effective Visualization of the Sutherland Hodgman Clipping Algorithm

Clipping

Line Clipping in 2D

Mid Point Line Drawing Algorithm

Clipping

Bresenham’s Line algorithm

Bresenham’s Line Algorithm

Clipping

Line Clipping

Line Drawing by Algorithm

Clipping

The Graphics Pipeline: Clipping &amp; Line Rasterization

Cohen Sutherland Line Clipping Algorithm

Bresenham’s Line Algorithm

Clipping:

The Graphics Pipeline: Line Clipping & Line Rasterization

The Graphics Pipeline: Clipping & Line Rasterization