
	Where results make sense

Topic: Hidden line removal

Related Topics

Rentz, Georgia

Unified Modeling Language

June Park, Florida

Garrett Gruener

Robert Duncan McNeill

Polydeuces

Antigonus I Monophthalmus

Pontifex Maximus

Tavistock

Dante

Nick 13

Cambio 90

Runnymede

Swatch

Ted Allen

In the News (Sun 15 Nov 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	NationMaster - Encyclopedia: Wire frame model
		It is created by specifying each edge of the physical object where two mathematically continuous smooth surfaces meet, or by connecting an object's constituent vertices using straight lines or curves.
		Hidden line removal is an extension of wireframe rendering where lines (or segments of lines) covered by surfaces are not drawn.
		Since wireframe renderings are relatively simple and fast to calculate, they are often used in cases where a high screen frame rate is needed (for instance, when working with a particularly complex 3D model, or in real-time systems that model exterior phenomena).
	www.nationmaster.com /encyclopedia/Wire_frame_model (677 words)

	Fractional Quantitative Invisibility
		Hidden line removal (HLR) is the process of computing which edges are not obscured by the faces of parts for a particular view and the arrangement of parts in the projection of a model into a two-dimensional plane.
		Face drawing would be fast due to the fact that the hidden edges are overwritten (rather than their intersections computed), however computing the points in the interior of the face is time consuming.
		An algorithm for the determination of hidden lines in a three dimensional model is presented.
	wheger.tripod.com /vhl/vhl.htm (3234 words)

	Stereo graphics; mesh plots and hidden line removal.
		Removal of the these hidden lines renders the object more readily recognizable and, in the case of mimicking real objects in stereo, enhances the illusion.
		Removal of hidden lines (or surfaces for solid objects) has occupied the attention of workers in the field of computer graphics for almost as long as computers have been drawing figures.
		Lines 650, 750, and 1150 will switch PN to 1 whenever the line number being plotted is exactly divisible by D. This is what colors the border of the mesh with the color corresponding to a PN of 1.
	www.atarimagazines.com /creative/v9n2/232_Stereo_graphics_mesh_plo.php (2077 words)

	Hidden line removal -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-31)
		Hidden line removal is an extension of (Click link for more info and facts about wireframe) wireframe rendering where lines (or segments of lines) covered by surfaces are not drawn.
		This is not the same as (Click link for more info and facts about hidden face removal) hidden face removal since this involves depth and occlusion while the other involves normals.
		A commonly used algorithm to implement it is Arthur Appel's algorithm (developed at IBM in the late 1960's).
	www.absoluteastronomy.com /encyclopedia/h/hi/hidden_line_removal.htm (157 words)

	Spatial: PHL V5
		Hidden line removal (HLR) is an important aspect of creating an accurate 2D representation from a 3D model.
		Using HLR, the converted model only displays those parts visible from a given perspective; hidden (or occluded) edges normally included in a 3D model representation are removed, or drawn in a line style that indicates their obscured position.
		Hidden - Edges that are hidden by material in the current perspective; for example, in a slightly nonorthogonal view of a cube, edges along the rear side of the shape.
	www.spatial.com /products/phlv5.html (621 words)

	Single pass hidden line removal using Z-buffers - Patent 5220646
		The hidden line color (0,1) is then chosen for the pixels of the second polygon, including those pixels corresponding to the obscured visible lines of the first polygon.
		The hidden lines (0,1) of polygon 40 remain hidden while the background color (0,0) is written to frame buffer 12 since BP1 is disabled and remains binary 1 and binary 0 is written to BP2, i.e.
		Pixels 63, 70 are background and become the hidden line color 0,1 during the drawing of the hidden line color for polygon 50, and pixels 67, 68, 71 which were visible lines remain as such.
	www.freepatentsonline.com /5220646.html (5826 words)

	Tech Soft 3D - developer.hoops3d.com
		One of the primary downsides of using HLR algorithms is that they are inherently expensive as they need to sort and clip all the edges against all the facets in the scene (an n*log(n) algorithm at best).
		The standard way of faking HLR is to use standard frame-buffer rendering, which is normally hardware accelerated, and simply turn the visibility of edges on and set the color of the facets to the color of the window background.
		The result will be that the patterned lines of the second segment will blend in with the visible edges in the first segment leaving only the patterned edges visible at the locations of the hidden lines.
	developer.hoops3d.com /whitepapers/HLR.html (640 words)

	9) 3D graphs (grid) (Site not responding. Last check: 2007-10-31)
		The isometric option specifies that the command line is associated with the 3D data, and the plot produced from the data is isometric in form.
		In the default software mode, hidden line removal is carried out so that data at the back of the plot is hidden by data at the front of the plot.
		The tile and rtile option specifies that the command line is associated with the 3D data, and the plot produced from the data is tiled.
	www.ysbl.york.ac.uk /~oldfield/squid/squid9.html (2734 words)

	Hidden line removal method with modified depth buffer - Patent 4855938 (Site not responding. Last check: 2007-10-31)
		To remove hidden lines, a standard depth buffer technique is often used in which the Z values of each projected point are determined and compared.
		"Hidden lines" are understood to mean those polygon edges which would not be seen from the chosen viewpoint due to the interposition of other polygons between the viewpoint and the line in question.
		The purpose of HLR subsystem 12 is to remove hidden lines in the display using a depth buffer technique.
	www.freepatentsonline.com /4855938.html (4059 words)

	Re: Hidden Line Removal and Geo Approx... -- ke y -- 2002/04/08
		I'm constantly switching between edge select mode, point select mode, hitting ESC, selecting, deselecting, switching transform modes etc. It gets a bit tedious after a while, but supposedly they are going to improve the workflow.
		I >was hoping that this would also mean that components (edges, points etc) >that are located on the hidden portion of the wireframe would also be >unselectable, even if part of the same mesh.
		This would be extremely >useful when working on a dense mesh editing edges, poly and points.
	www.softimage.com /Community/Xsi/Discuss/Archives/xsi.archive.0204/msg00461.htm (377 words)

	Gnuplot: An Interactive Plotting Program: hidden3d (Site not responding. Last check: 2007-10-31)
		In contrast to the usual display in gnuplot, hidden line removal actually treats the given function or data grids as real surfaces that can't be seen through, so parts behind the surface will be hidden by it.
		When hidden3d is set, both the hidden portion of the surface and possibly its contours drawn on the base (see contour) as well as the grid will be hidden.
		This means that the appearance of a function may be different when plotted with hidden3d than when plotted with `nohidden3d` because in the latter case functions are evaluated at each sample.
	uw.physics.wisc.edu /~sanjib/gnuplot/gnuplot_139.html (841 words)

	Acne Scar Removal (Site not responding. Last check: 2007-10-31)
		The most well-known of these Indian removal s was the Trail of Tears, which resulted in th 7: ==Removal of the "Five Civilized Tribes"== 15: abbit Creek with the Choctaw was the first such removal treaty implemented; others, like the dubious Tr 17: (rather than tribal domains) were not subject to removal.
		Penis removal 1: val of the testicles) sometimes also involves the removal of all or part of the penis, generally with a tub 3: n penis is rare, and references to castration and removal of the penis are almost always symbolic.
		Hidden line removal 1: '''Hidden line removal ''' is an extension of wireframe rendering whe 3: This is not the same as hidden face removal since thi...
	www.witchware.com /File/3486-Acne.Scar.Removal.Html (948 words)

	Presentation in IntelliCAD (Site not responding. Last check: 2007-10-31)
		Removing the hidden lines is a quick way to view a 3D drawing in a way that gives it some degree of solidity.
		You cannot print a hidden line view and the Hideplot option in the MVIEW command (enabling printing hidden line views through a Paperspace viewport) is not currently supported.
		Hidden lines are removed and surfaces are shaded in accordance with assigned materials.
	www.design-drawing.com /icad/presicad.htm (593 words)

	Hidden Line Removal (Site not responding. Last check: 2007-10-31)
		Use the Hidden Line Removal tab to control the display of hidden and exterior lines when using the Display, Hidden Lines Removed, and Display, Hidden Lines Dashed options.
		Hidden Line Changes Set the attributes to be used for the display of hidden lines.
		HLR Curve Resolution - controls the number of sub-edges into which a full circle is divided in the hidden-lines removed view.
	www.cppcad.com /html/9sol9d4c.htm (460 words)

	ARICAD Hidden Line (Site not responding. Last check: 2007-10-31)
		Hidden line drawings are an important aspect of any fully-featured 3D CAD solution.
		To remove lines that are hidden from view, hidden line algorithms first make a list of all of the lines in the model.
		When you crate a hidden line drawing with ARICAD Hidden Line, you can choose whether or not to show intersection lines, z-clip lines, and whether hidden lines should be removed completely or just changed in color from rest of the lines.
	www.aritek.com /aricad_hi.htm (284 words)

	Hidden Surface Removal
		Hidden surfaces will be written over in the image as the surfaces that obscure them are drawn.
		One line may be used to form the outline of two polygons (in which case it is known as a two-sided line) and one polygon may be contained within another, but no lines may cross.
		The lower texture is visible when a line is viewed from a direction where the floor is lower in the adjoining area.
	www.cs.sun.ac.za /~lynette/courses/rw778/grafika/OpenGLtuts/Big/graphicsnotes009.html (4255 words)

	Freeware Download: Removal
		Removal Of Adware Dangers Of Surveillance Spy Software Removal Of Surveillance Spy Software Four Easy Steps To Spy Proofing Your Computer NOTE: The download file is an EXE which loads and displays a packaged PDF in Acrobat reader.
		Emsa HTML Tag Remover is a software utility that allows removing html tags from a html file with some extra degree of control on how the html is removed and whitespace removal as well.
		On line customers support â“ All Disspy users have 24 hours non-stop open support center where they can post (ticket) all their comments, problems, questions, recommendations, etcâ¦ Combined with knowledge base, also available on-line, users are sure that they will have all their questions answered.
	www.dirfile.com /freeware/removal.htm (5644 words)

	DMM Varkon Tutorial - 10. Hidden Line Removal
		In Varkon, hidden line removal is accomplished by "dressing" a model in b_planes (bounded planes).
		Thus, if you use triangular b_planes to define the ends of a cylinder, you get a radial pattern of lines created by the b_planes' edges when hidden line removal is performed.
		I have found it convenient to reserve one level for the use of hidden b_planes and simply to create all b_planes in that level throughout the entire model.
	www.marcdatabase.com /~lemur/vk-hidden.html (528 words)

	Notes about Hidden Line Renderings (Site not responding. Last check: 2007-10-31)
		The HLR (Hidden Lines Removed and Hidden Lines Dashed) display options function somewhat differently depending on whether you are in CADKEY Model Mode or Layout Mode.
		If line segments do not render correctly in HLR mode (e.g., dashed lines appear in front of solid lines), try disabling the Calculate edges obscured by other edges checkbox in the Hidden Line Removal tab of the "Solids 99 Configuration" dialog box.
		If the “Automatically Re-process Hidden Line Removal” check box is enabled (in the “Hidden Line Removal” tab of the “Solids99 Configuration” dialog box), the HLR will be reprocessed whenever the model is changed.
	www.cppcad.com /html/6sol3pv7.htm (523 words)

	[No title] (Site not responding. Last check: 2007-10-31)
		controls how quilts display in the hidden line removal process.
		•“yes”— includes quilts in the hidden line removal process.
		•“no”—does not include quilts in the hidden line removal process.
	www.proesite.com /cgi-bin/find_option.cgi?srch=HLR_FOR_QUILTS&ver=2000i (29 words)

	Hidden Surface Removal
		Hidden line removal, hidden surface removal, hidden surface elimination
		Goal: Remove all portions of objects that are occluded by other objects.
		If the objects are solid polyhedra, we can remove all parts of the objects that are facing away from us.
	neptune.cs.byu.edu /egbert/455/CourseNotes/Hidden_Surface_Removal.html (1388 words)

	Wire Display
		Sets the hidden line type of the plot in the wire dipole window "WD." The hidden line type is an integer with one of the following values:
		It first displays it as a grid plot without hidden line removal, then it turns hidden line removal on and sets the minimum to 0 and the maximum to 50.
		It first displays it as a grid plot without hidden line removal, then it turns hidden line removal on and sets the minimum to 0.
	www.aoainc.com /technologies/adaptiveandmicrooptics/manual/wd.html (899 words)

	Surface Plotting Program for the HP85
		The values to be plotted are arranged in the two dimensional array: M, this represents a square of edge length L with the values defined at intervals of P. The perspective appearances of the square are shown in figures 3a and 3b.
		Once the position on the page has been determined a line is drawn from the previous position to the new point, then a second line is drawn to the corresponding x position of the previous line of data, this results in the 'cross-grid' appearance of the surface.
		Hidden detail is suppressed using statements 4700 to 5500: the maximum pen position is recorded for each scan in the x direction (using arrays S and T); during all subsequent scans (ie, for increasing values of y) the points will be plotted only if their position on the page is higher than the previously maximum.
	graffiti.virgin.net /ljmayes.mal/plotting/plotting.htm (604 words)

	3D Graphics Implementation
		For wireframe object, the hidden line determination is done in the similar way.
		If a line does not belong to any of the visible faces, then this line is hidden.
		If a line value is negative, it means, to make this line clockwise, the line's start and end point needs to be reversed.
	www.cs.umd.edu /~mount/Indep/Connie_Peng/wireframe/doc.html (2633 words)

	[No title] (Site not responding. Last check: 2007-10-31)
		This line drawing includes all of the lines involved in describing the machine.
		For example the two sections removed from the base of the lower arm channel can now be seen.
		Line drawings without hidden line removal can sometimes remove ambiguities.
	www.eng.auburn.edu /department/me/courses/nmadsen/egr182a/pliers04.html (122 words)

	Freeware Download: Hidden
		Cutaway sections can be invisible, ghosted, hidden line removal or a combination of ghosting and hidden line removal.
		Keylogger is able to work in the hidden mode and to emerge on pressing a combination of keys.
		When the ticker is hidden, only the tray icon gives access to the program.
	www.dirfile.com /freeware/hidden1.htm (3327 words)

	CADVANCE FORUM (Site not responding. Last check: 2007-10-31)
		The color of the objects are the color of the lines making up the object, therefore, if you want the image to be easier to visualize, use more subtle color shades and set up a light source angle which will shade the image to the best effect.
		Whenever you do a hidden line removal, the hidden line removal is automatically placed on the Clipboard, for pasting back into 2D mode.
		If you do a hidden line removal or a render, then go to 2D and the Edit/"Paste" is grayed out, just hit [Ctrl][V] on your keyboard to paste.
	www.cadvance.com /discus/messages/89/57.html?MondayJune2120040632am (2036 words)

	Vermont Agency of Transportation - Cadd Glossary - H (Site not responding. Last check: 2007-10-31)
		Most hard disks are permanently connected to the drive, but there are removable hard disks.
		Process of removing the lines that are hidden by surfaces in a 3D design.
		See also: edges hidden line removal; filled hidden line removal; or wireframe hidden line removal.
	www.aot.state.vt.us /CaddHelp/cadd/glossary/gloss_h.htm (451 words)

	ipedia.com: Wire frame model Article (Site not responding. Last check: 2007-10-31)
		It is created by specifying each edge of the physical object where two mathematically continuous smooth surfaces meet, or by connecting an object's constituent vertices using straight lines or curves.
		Traditional 2-dimensional views and drawings can be created by appropriate rotation of the object and selection of hidden line removal via cutting planes.
		Since wireframe renderings are relatively simple and fast to calculate, they are often used in cases where a high screen frame rate is needed (for instance, when working with a particularly complex 3D model, or in real-time systems that model exterior phenomena).
	www.ipedia.com /wire_frame_model.html (285 words)

Try your search on: Qwika (all wikis)