1 | |
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2 | /* |
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3 | * ---------------------------------------------------------------------- |
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4 | * NvCamera.cpp : NvCamera class |
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5 | * |
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6 | * ====================================================================== |
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7 | * AUTHOR: Wei Qiao <qiaow@purdue.edu> |
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8 | * Purdue Rendering and Perceptualization Lab (PURPL) |
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9 | * |
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10 | * Copyright (c) 2004-2006 Purdue Research Foundation |
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11 | * |
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12 | * See the file "license.terms" for information on usage and |
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13 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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14 | * ====================================================================== |
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15 | */ |
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16 | |
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17 | #include <stdio.h> |
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18 | #include <GL/glu.h> |
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19 | #include "NvCamera.h" |
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20 | |
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21 | NvCamera::NvCamera(int startx, int starty, int w, int h, |
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22 | float loc_x, float loc_y, float loc_z, |
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23 | float target_x, float target_y, float target_z, |
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24 | float angle_x, float angle_y, float angle_z): |
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25 | location_(Vector3(loc_x, loc_y, loc_z)), |
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26 | target_(Vector3(target_x, target_y, target_z)), |
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27 | angle_(Vector3(angle_x, angle_y, angle_z)), |
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28 | width_(w), |
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29 | height_(h), |
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30 | startX_(startx), |
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31 | startY_(starty) |
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32 | { |
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33 | /*empty*/ |
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34 | } |
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35 | |
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36 | |
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37 | void |
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38 | NvCamera::activate() |
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39 | { |
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40 | //fprintf(stderr, "camera: %d, %d\n", width, height); |
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41 | glViewport(startX_, startY_, width_, height_); |
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42 | glMatrixMode(GL_PROJECTION); |
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43 | glLoadIdentity(); |
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44 | gluPerspective(30, |
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45 | (GLdouble)(width_ - startX_)/(GLdouble)(height_ - startY_), |
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46 | 0.1, 50.0); |
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47 | |
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48 | glMatrixMode(GL_MODELVIEW); |
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49 | glLoadIdentity(); |
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50 | |
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51 | gluLookAt(location_.x, location_.y, location_.z, |
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52 | target_.x, target_.y, target_.z, |
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53 | 0., 1., 0.); |
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54 | |
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55 | glRotated(angle_.x, 1., 0., 0.); |
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56 | glRotated(angle_.y, 0., 1., 0.); |
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57 | glRotated(angle_.z, 0., 0., 1.); |
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58 | } |
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59 | |
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