PDF-Clipping

1 Clipping Transform intoframe bufferin frame buffer Clipping in the 2D pipeline Clipping references Clipping references Hearn and Baker Hearn and Baker C C S lines p 317 S lines p 317 L. 0 SatLo 10 stepsize 001 a 0 stepsize 5 index a stepsize 1stepsize matlab indexes start at 1 index roundindex clear out VERY small offsets b 29 sina3 a1 constants chosen to look nice plot original waveform figure1clf plotab grid on ax In rendering complex 3D images it has to be done several thousand times Ef64257cient algorithms are therefore very important We present such an ef64257cient algorithm for clipping arbitrary 2D polygons The algorithm can handle arbitrary closed polyg Clipping. CMSC 435/634. Graphics Pipeline. Object-order approach to rendering. Sequence of operations. Vertex processing. Transforms. Vertex components of shading/texture. Clipping. Find the visible parts of any primitives. Viewing In 2D. Contents. *. Windowing Concepts. *. Clipping. Point Clipping . Line Clipping. . -Cohen-Sutherland Clipping Algorithm. *. Area Clipping. Sutherland-. Hodgman. Area Clipping Algorithm. Lecture . 7. : 2D Clipping Algorithm. Recap. 2D Viewing pipeline. Model .  . World .  View  Device. Model to view transformation. Viewing  Clipping. . 2D viewing in OpenGL. Objective. Department of Computing and Information Sciences, . KSU. KSOL course pages: . http://bit.ly/hGvXlH. / . http://bit.ly/eVizrE. . Public mirror web site: . http://www.kddresearch.org/Courses/CIS636. Instructor home page: . Infection . Prevention Consultant . . Boston. , MA. www.maureenspencer.com. Pre-Operative Surgical Clipping: . New Advances in Efficiency and Infection Prevention. Agenda. Why? Clinical Rationale for Clipping. Eric Lengyel. Outline. Projection Matrix Internals. Infinite Projection Matrix. Depth Modification. Oblique Near Clipping Plane. Slides available at http://www.terathon.com/. From Camera to Screen. Camera. Clipping is the . process . whereby new words are formed by shortening other . words; i.e. ., by eliminating the initial part, the last part, or both parts, of those words. .. What is clipping?. Examples: . Lecture 1. 2. : . 3D Clipping. Recap. Parallel projection. Normalized coordinate transformation. . Orthographic. . Oblique. . Perspective. Objective. After completing this lecture students will be able to. Ouhyoung. 歐陽明. . Professor . Dept. of CSIE and GINM. NTU. 3D Viewing Process. Transform. into viewport. in 2D device. coordinates. for display. Project onto. projection. plane. Clip against. view. CMSC 435/634. Graphics Pipeline. Object-order approach to . rendering. Vertex Processing. Clipping. Rasterization. Fragment Processing. Visibility & Blending. Transformations. Vertex components of shading. Types of Clipping:. Generally we have Clipping algorithm for the following primitive type:. Point Clipping. Line Clipping . Area Clipping (Polygon). Curve Clipping. Text Clipping. . 2. Point Clipping. 5mm left . PComm. aneurysm. 2mm . Acomm. aneurysm. Spetzler. -Martin grade 4 L . parieto. -occipital AVM. Case #2. 43yo woman presents with Hunt and Hess 2, Fisher 3 SAH 5mm . L. PComm. aneurysm, 2mm .