43 lines
1.9 KiB
C
43 lines
1.9 KiB
C
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file luse.h
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* @author drose
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* @date 1999-01-13
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*/
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#ifndef LUSE_H
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#define LUSE_H
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/*
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* This file defines a number of vector-based classes that are designed for
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* specific uses. These all inherit from LVecBase[234][fd], which is the base
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* of all linear algebra vectors. LPoint[234][fd] This should be used to
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* represent a specific point in space. It inherits most properties from
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* LVecBase. LVector[234][fd] This should be used to represent a vector, or a
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* distance between two points in space. The distinction between LPoint and
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* LVector is worth emphasizing. They differ in some subtle typing behavior
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* (vector - vector = vector, point + vector = point, point - point = vector)
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* and also in the way they are transformed when multiplied by a matrix (a
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* point gets the translation component of the matrix, while the vector does
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* not). Also, vector has length() and normalize() functions defined for it,
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* while point does not. LPoint and LVector should be used whenever the
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* concept of "point" or "vector" applies. If neither applies--for instance,
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* if you are storing a plane equation or some such nonsense--use the base
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* class, LVecBase. This file also typedefs the following: Vertex[fd]
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* Normal[fd] TexCoord[fd] Color[fd] RGBColor[fd] These classes are typedefs
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* of LPoint or LVector, as appropriate, and are intended to store a specific
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* kind of rendering attribute. (Color is a four-component color; RGBColor is
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* three-component.)
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*/
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// All of the guts is actually defined in this other header file, which is not
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// intended to be included directly by the user.
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#include "aa_luse.h"
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#endif
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