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Topic: Primitive (geometry)

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	Yongming xie, Department of Computer Science Engineering . OpenGL Shading Language
		Primitives are points, lines, triangles, quads, or polygons, but instead decompose them into triangles as permitted by the spec.
		After the vertices of the primitive are transformed to window coordinate, the GL determines if the primitive is front- or back-facing.
		A geometry shader is limited in the number of vertices it may emit per invocation.
	appsrv.cse.cuhk.edu.hk /~ymxie/Geometry_Shader (1563 words)

	Geometry
		Note that Geometries don't necessarily have to be leaves of the tree, as due the Node/Core divison every Node keeping a osg::Geometry Corehas children anyway, which are used just as all other osg::Node 's children.
		The osg::Geometry setup is very nice and flexible to define: you can mix different kinds of primitives in an object, you can have properties and different kinds and the indexing allows the reuse of some or all of the data.
		A geometry iterator allows to iterate over a given geometry primitive by primitive, face by face (a face being a triangle or quad), or triangle by triangle.
	www.opensg.org /doc-1.2.0/PageSystemGeometry.html (3190 words)

	[No title]
		If a geometry shader is active, the values of varying variables are collected by the primitive assembly stage and passed on to the geometry shader once enough data for one primitive has been collected (see also section 2.16).
		In a geometry shader it is not possible to perform automatic level-of- detail calculations using partial derivatives of the texture coordinates with respect to window coordinates as described in section 3.8.8.
		Geometry Shader outputs A geometry shader is limited in the number of vertices it may emit per invocation.
	developer.download.nvidia.com /opengl/specs/GL_EXT_geometry_shader4.txt (13827 words)

	Primitive (Java 3D API) (Site not responding. Last check: 2007-11-05)
		By default all primitives with the same parameters share their geometry (e.g., you can have 50 shperes in your scene, but the geometry is stored only once).
		Another implication of this implementation is that the capabilities of the geometry are shared, and once one of the shared nodes is live, the capabilities cannot be set.
		By default all primitives created with the same parameters share their geometry (e.g., you can have 50 spheres in your scene, but the geometry is stored only once).
	www.seas.ucla.edu /java3d/com/sun/j3d/utils/geometry/Primitive.html (718 words)

	CGTalk - adding a new primitive geometry
		I have used the macro recorder before to accomplish something similar (for much less complicated geometry), but to record the process of building a base charicter mesh at my skill level would probably lead to a very long ordeal as well as a very long and very inefficiant script...
		Can this be done somehow, at the stage my geometry Is currently at.
		I want this geometry to remain "editable poly" so the geometry can keep its current topology..
	forums.cgsociety.org /printthread.php?t=88115 (267 words)

	Using Electric 8.8: The Node Cells
		The "Lockable" entry indicates that this node can be made unchangeable along with other lockable primitives, when the lock is turned on during editing (see Section 6-2 for more on locking these primitives).
		As in the Arc cells, pieces of geometry can be created by selecting from the component menu on the left, creating the geometry, and then using the technology edit button to assign a layer to the geometry.
		A standard geometry must be used that shows polysilicon and diffusion crossing in a central transistor area.
	www.staticfreesoft.com /manual/text/chap08-08.html (1293 words)

	Conformance, Appearance, Material (Site not responding. Last check: 2007-11-05)
		The geometry consists of a row of 5 Cones, followed by a row of 5 Cylinders, 5 Spheres, then 5 Boxes.The result is a range of diffuseColor that begins with a fl geometry on the left, followed by red, green blue and white geometry on the right, for all four primitive types.
		The geometry consists of a row of 5 Cones, followed by a row of 5 Cylinders, 5 Spheres, then 5 Boxes.The result is a range of diffuseColor that begins with a fl geometry on the left, followed by red, green blue and white geometry on the right, for all three complex geometry types.
		The geometry consists of a row of 5 Cones, followed by a row of 5 Cylinders, 5 Spheres, then 5 Boxes.The result is a range of reflection that begins with minimum shininess on the left, to maximum shininess on the right for all four primitive types.
	www.web3d.org /x3d/content/examples/Conformance/Appearance/Material/chapter.html (1375 words)

	Primitive (geometry) - Wikipedia, the free encyclopedia
		In geometry, a primitive is the simplest kind of figure.
		There is no rigorous, logical definition of a primitive.
		What counts as a primitive and what does not is largely a matter of personal opinion and convention, and varies depending on the context.
	en.wikipedia.org /wiki/Primitive_(geometry) (78 words)

	SGI TPL (IRIX 6.5: Developer/Perf_PG - Chapter 8. Geometry)
		Table 8-2 lists the primitive type tokens, the primitive types that they represent, and the number of vertices in a coordinate list for that type of primitive.
		The way to get more than one primitive to refer to the same vertex is to use an index; three vertices of three primitives use the same index which points to the same vertex information.
		The choice of using indexed or sequential attributes applies to all of the primitives in a pfGeoSet; that is, all of the primitives within one pfGeoSet must be referenced sequentially or by index; you cannot mix the two.
	techpubs.sgi.com /library/tpl/cgi-bin/getdoc.cgi?coll=0650&db=bks&fname=/SGI_Developer/Perf_PG/ch08.html (5801 words)

	Constructive Solid Geometry (CSG)
		It is the concept of CSG to provide solid 3D primitives which are described a set of parameters reflecting the object dimensions (Figure 2.17).
		The leaves of the CSG tree are the primitives, and the nodes are marked either as a Boolean set operation or with a rigid motion.
		First, the CSG primitives have to be converted to boundary models, and then these models have to be combined using the Boolean set operations, which, as already stated in section 2.3.1.3, turns out to be very complicated.
	www.ipf.tuwien.ac.at /fr/buildings/diss/node38.html (531 words)

	[No title]
		Geometry provides the means for the quantitative description, by means of coordinates and mathematical functions, of the spatial characteristics of features, including dimension, position, size, shape, and orientation.
		Geometry is the only aspect of geographic information that changes when the information is transformed from one geodetic reference system or coordinate system to another.
		The primitives in this algebra are the TP_Primitives.
	www.omg.org /docs/transprt/98-09-01.txt (12660 words)

	Journal of Manufacturing Systems: Bounding Box Techniques to Initialize Optimization of Primitive Geometry Fitting
		The type of primitive to be fit to the point cloud is assumed to be known a priori.
		One of the fundamental assumptions of using bounding boxes for initial estimates of primitives is that the point cloud covers the extent of the entire primitive.
		In the case of fitting primitives, a single bounding box is used to estimate geometric parameters.
	www.findarticles.com /p/articles/mi_qa3685/is_200401/ai_n9356156 (1409 words)

	Geometry: Primitives (Site not responding. Last check: 2007-11-05)
		A GU primitive is multiply derived from GEO_Primitive and GU_Primitive.
		This converts the primitive to the specified type and deletes the original.
		This computes the normals of the points referenced by the primitive, and stores the result at the given offset in the point normal attribute.
	accad.osu.edu /~pete/Houdini/html/geometry/primitive.html (602 words)

	ABINIT : GEOMETRY BUILDER + SYMMETRY RELATED input variables. (Site not responding. Last check: 2007-11-05)
		The geometry builder can indeed repeat these objects (objarf or objbrf), rotate them (objaro or objbro) with respect to an axis (objaax or objbax), and translate them (objatr or objbtr).
		After having generated a geometry thanks to rotation, translation and repetition of objects, it is possible to remove some atoms, in order to create vacancies (vacnum and vaclst).
		The number of atoms in the primitive set, those that will be read from the input file, is specified by the variable natrd.
	www.abinit.org /ABINIT/Infos_v4.4/vargeo.html (2355 words)

	Combinatorial Solid Geometry, Boundary Representations, and Non-Manifold Geometry
		For example, the geometry information associated with a planar face is the plane equation which includes the outward-pointing surface normal; the plane equation does not have to be re-derived from the vertices.
		Thus, adding a new primitive solid requires only the addition of a single module to the library; none of the analysis codes ever need to be modified when designers begin using a new kind of primitive.
		The application will have no knowledge of the underlying primitives used to describe the objects in the database, nor will the application be aware that the library creates the surface description by extracting the objects from the geometry database, tessellating them into NMG solids, and then combining them via boolean formulas.
	ftp.arl.mil /~mike/papers/90nmg/joined.html (20066 words)

	Java 3D API: Class Primitive (Site not responding. Last check: 2007-11-05)
		Obtains a shape node of a subpart of the primitive.
		Sets the main appearance of the primitive (all subparts) to a default white appearance.
		By default all primitives created with the same parameters share their geometry (you have 50 spheres in your scene, but the geometry stored only once).
	www.csc.calpoly.edu /~hitchner/CSC471.W2003/notes/Primitive.html (617 words)

	Geometry: Class Hierarchy/Data Structures (Site not responding. Last check: 2007-11-05)
		The Geometry Domain Class (GD) is derived from the GB class and further defines primitives with trimmed surface and surface domain information.
		The Geometry Utility Class (GU) is derived from GEO and contains a number of functions for creating and manipulating primitives and points.
		Primitives are contained with a geometry detail primitive list.
	accad.osu.edu /~pete/Houdini/html/geometry/class.html (539 words)

	OpenSG: Geometry
		Geometry is actually a common core like all the others from the last chapter, too.
		It is easy to mix different primitive types in one core, assign some properties like normals or texture coordinates to them and you can even reuse data with indexing (see next section Indexing).
		Indexed geometry in general is a lot better than non-indexed geometry, but still we have some issues that are not solved optimally.
	www.opensg.org /doc-1.4.0/Geometry.html (5476 words)

	Java Programing » 2007 » March
		The depth to the first occurrence of geometry is stored in the Z-buffer, and floating point values are scaled such that the closest value to the user is zero while the farthest value is one.
		The Sphere Primitive (low resolution) Figure 8.7 The Sphere Primitive (high resolution) Figure 8.8 Sphere Primitive with an applied texture image of the Earth 8.2.5 Primitive flags All of the Primitiveshave a primitive flags (primflags) argument in one of their constructors.
		Primitive flags influence the attributes applied to the Shape3Dgeometry when it is generated internally for the Primitive.
	java-programing.totalroute.net /2007/03 (2258 words)

	Expertrating -3DS Max Tutorial, Objects and Transformation
		This panel is the first in the Command Panel, indicated by an icon of an arrow pointing to a star.
		After you select the Geometry button (which has an icon of a sphere on it), a dropdown list with several subcategories appears directly below the category icons.
		The rollouts for each primitive are slightly different, as well as the parameters within each rollout.
	www.expertrating.com /courseware/3DCourse/3D-Object-Transformation.asp (676 words)

	Constructive Solid Geometry
		Constructive Solid Geometry, or CSG for short, is yet another way of representing solids.
		These six primitives are in some normal or generic form and must be instantiated by the user to be used in his/her design.
		Moreover, the instantiated primitive may require transformations such as scaling, translation and rotation to be positioned at the desired place.
	www.cs.mtu.edu /~shene/COURSES/cs3621/NOTES/model/csg.html (634 words)

	Uses of Package org.opengis.spatialschema.geometry.primitive (GeoAPI 2.1 alpha) (Site not responding. Last check: 2007-11-05)
		Set of primitive geometric objects whose interiors are disjoint.
		Set of geometric objects that are not decomposed further into other primitives.
		Primitives that can be mirrored into new geometric objects in terms of their internal local coordinate systems (manifold charts).
	geoapi.sourceforge.net /snapshot/javadoc/org/opengis/spatialschema/geometry/primitive/package-use.html (168 words)

	The Atlatl: Stealth Technology 1992 BC
		Launch Geometry simply states that for close range targets, a shorter atlatl is required, and as the distance from the target increases, the length of the atlatl should in crease proportionately.
		The understanding of this theory and its mathematical underpinnings is supported by experiment and the discovery of multiple length atlatl systems which allowed the hunter to adjust the length of his atlatl as needed.
		The farther to the side of the target, the greater the sound level, indicating that a correctly shaped banner stone will direct the air flow to the sides and back of the weight, so that a minimum of noise is heard from the target's location.
	www.primitive.org /atlstealth.htm (1845 words)

	NeoEngine 2 - Evolution: neo::scene::Geometry Class Reference
		A geometry can be used for any or all of the features supported; rendering, shadow casting and collision detection.
		Geometry passes this geometry is used in, default to all (RENDER, COLLISION, OCCLUSION and SHADOW)
		The primitive should have the object parameters set (model, invmodel matrices, object flags).
	www.realityrift.com /technology/neoengine/api/classneo_1_1scene_1_1Geometry.html (117 words)

	Primitive Shapes (Site not responding. Last check: 2007-11-05)
		In VRML there are primitive shapes and there are advanced shapes.
		Primitive shapes are the ones that come ready-to-use in VRML code.
		The appearance and geometry together will define the shape of the object.
	www.vuse.vanderbilt.edu:8888 /es130/lectures/lecture4/primitive.htm (1014 words)

	MUG: Galois Field Extensions (and Finite Geometry) (18.1.96)
		I am just writing a finite geometry package, in which I constructed the cyclization of GF(q^m)=GF((p^n)^m) as you wish, but at the moment I use GAP and not MAPLE.
		Otherwise, consider a primitive polynomial of order n*m over GF(p), factorize it over GF(q), one of the factors will be good for you.
		Concerning the desire to find a primitive root of a finite field: Have you checked out the package GF which has a procedure which produces primitive roots of arbitrary finite field according to the help page.
	www.math.rwth-aachen.de /mapleAnswers/html/96.html (438 words)

	Primitive by Clodagh • Du Verre The Hardware Company
		Primitive by Clodagh • Du Verre The Hardware Company
		The Primitive collection, by Clodagh for Du Verre the Hardware Co captivates us with its strong sense of geometry.
		Primitive is offered in Brushed Nickel, Dark Antique Brass and Polished Aluminum.
	www.duverre.com /products/primitive (58 words)

	[No title]
		All geometry elements are derived from this abstract supertype; a geometry element may have an identifying attribute ('gid').
		The 'remoteSchema' attribute allows an element that carries link attributes to indicate that the element is declared in a remote schema rather than by the schema that constrains the current document instance.
		The value of the 'cs' attribute is the separator for coordinate values, and the value of the 'ts' attribute gives the tuple separator (a single space by default); the default values may be changed to reflect local usage.
	www.alexandria.ucsb.edu /gazetteer/protocol/geometry.xsd (323 words)

	Primitive Geometry
		As a business rule, Union of Primitive Geometries under Continuous Level of Detail_Related Geometries are not allowed to have other Union of Primitive Geometry objects.
		The reason_for_ordering could still be valid for any of the enums currently in Union of Primitive Geometry.
		As a business rule, when a Primitive Geometry contains a Union of Primitive Geometry, for nesting reasons, the resulting geometry must be coplanar.
	www.sedris.com /stc/2001/tu/drm_api/drm/PrimitiveGeometry.htm (338 words)

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