1 | |
---|
2 | /* |
---|
3 | * ---------------------------------------------------------------------- |
---|
4 | * NvCamera.cpp : NvCamera 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 | |
---|
17 | #include <stdio.h> |
---|
18 | #include <GL/glu.h> |
---|
19 | #include "NvCamera.h" |
---|
20 | |
---|
21 | NvCamera::NvCamera(int startx, int starty, int w, int h, |
---|
22 | double loc_x, double loc_y, double loc_z, |
---|
23 | double target_x, double target_y, double target_z, |
---|
24 | int angle_x, int angle_y, int angle_z): |
---|
25 | location(Vector3(loc_x, loc_y, loc_z)), |
---|
26 | target(Vector3(target_x, target_y, target_z)), |
---|
27 | angle(Vector3(angle_x, angle_y, angle_z)), |
---|
28 | width(w), |
---|
29 | height(h), |
---|
30 | startX(startx), |
---|
31 | startY(starty) |
---|
32 | { |
---|
33 | /*empty*/ |
---|
34 | } |
---|
35 | |
---|
36 | NvCamera::~NvCamera() |
---|
37 | { |
---|
38 | /*empty*/ |
---|
39 | } |
---|
40 | |
---|
41 | void |
---|
42 | NvCamera::move(double loc_x, double loc_y, double loc_z) |
---|
43 | { |
---|
44 | location = Vector3(loc_x, loc_y, loc_z); |
---|
45 | } |
---|
46 | |
---|
47 | void |
---|
48 | NvCamera::aim(double target_x, double target_y, double target_z) |
---|
49 | { |
---|
50 | target = Vector3(target_x, target_y, target_z); |
---|
51 | } |
---|
52 | |
---|
53 | void |
---|
54 | NvCamera::rotate(double angle_x, double angle_y, double angle_z) |
---|
55 | { |
---|
56 | angle = Vector3(angle_x, angle_y, angle_z); |
---|
57 | } |
---|
58 | |
---|
59 | void |
---|
60 | NvCamera::activate() |
---|
61 | { |
---|
62 | //fprintf(stderr, "camera: %d, %d\n", width, height); |
---|
63 | glViewport(startX, startY, width, height); |
---|
64 | glMatrixMode(GL_PROJECTION); |
---|
65 | glLoadIdentity(); |
---|
66 | gluPerspective(30, (GLdouble)(width - startX)/(GLdouble)(height - startY), |
---|
67 | 0.1, 50.0); |
---|
68 | |
---|
69 | glMatrixMode(GL_MODELVIEW); |
---|
70 | glLoadIdentity(); |
---|
71 | |
---|
72 | gluLookAt(location.x, location.y, location.z, |
---|
73 | target.x, target.y, target.z, |
---|
74 | 0., 1., 0.); |
---|
75 | |
---|
76 | glRotated(angle.x, 1., 0., 0.); |
---|
77 | glRotated(angle.y, 0., 1., 0.); |
---|
78 | glRotated(angle.z, 0., 0., 1.); |
---|
79 | } |
---|
80 | |
---|
81 | void |
---|
82 | NvCamera::set_screen_size(int sx, int sy, int w, int h) |
---|
83 | { |
---|
84 | width = w, height = h; |
---|
85 | startX = sx, startY = sy; |
---|
86 | } |
---|