source: trunk/packages/vizservers/nanovis/Vector4.h @ 1028

Last change on this file since 1028 was 1028, checked in by gah, 13 years ago

various cleanups

File size: 1.7 KB
RevLine 
[1028]1
2/*
3 * ----------------------------------------------------------------------
4 * Vector4.h: Vector4 class
5 *
6 * ======================================================================
7 *  AUTHOR:  Wei Qiao <qiaow@purdue.edu>
8 *           Purdue Rendering and Perceptualization Lab (PURPL)
9 *
10 *  Copyright (c) 2004-2006  Purdue Research Foundation
11 *
12 *  See the file "license.terms" for information on usage and
13 *  redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
14 * ======================================================================
15 */
16#ifndef _VECTOR4_H_
17#define _VECTOR4_H_
18
19#include <stdio.h>
20
21class Vector4 
22{
23public:
24    float x, y, z, w;
25
26    Vector4(void) {
27        /*empty*/
28    }
29    Vector4(float x_val, float y_val, float z_val, float w_val) {
30        set(x_val, y_val, z_val, w_val);
31    }
32    void perspective_devide(void) {
33        /* Divide vector by w */
34        x /= w, y /= w, z /= w, w = 1.;
35    }
36
37    void print(void) {
38        fprintf(stderr, "Vector4: (%.3f, %.3f, %.3f, %.3f)\n", x, y, z, w);
39    }
40
41    Vector4 operator +(Vector4 &op2){
42        return Vector4(x + op2.x, y + op2.y, z + op2.z, w + op2.w);
43    }
44
45    Vector4 operator -(Vector4 &op2){
46        return Vector4(x - op2.x, y - op2.y, z - op2.z, w - op2.w);
47    }
48
49    float operator *(Vector4 &op2) {
50        return (x * op2.x) + (y * op2.y) + (z * op2.z) + (w * op2.w);
51    }
52
53    Vector4 operator *(float op2){
54        return Vector4(x * op2, y * op2, z * op2, w * op2);
55    }
56
57    Vector4 operator /(float op2) {
58        return Vector4(x / op2, y / op2, z / op2, w / op2);
59    }
60
61    void operator <(Vector4 &op2) {
62        set(op2.x, op2.y, op2.z, op2.w);
63    }
64    void set(float x_val, float y_val, float z_val, float w_val) {
65        x = x_val, y = y_val, z = z_val, w = w_val;
66    }
67};
68
69#endif
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