1 | /*
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2 | * ----------------------------------------------------------------------
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3 | * Camera.cpp : Camera class
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4 | *
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5 | * ======================================================================
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6 | * AUTHOR: Wei Qiao <qiaow@purdue.edu>
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7 | * Purdue Rendering and Perceptualization Lab (PURPL)
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8 | *
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9 | * Copyright (c) 2004-2006 Purdue Research Foundation
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10 | *
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11 | * See the file "license.terms" for information on usage and
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12 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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13 | * ======================================================================
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14 | */
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15 |
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16 | #include <stdio.h>
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17 | #include "Camera.h"
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18 |
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19 | Camera::Camera(int startx, int starty, int w, int h,
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20 | double loc_x, double loc_y, double loc_z,
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21 | double target_x, double target_y, double target_z,
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22 | int angle_x, int angle_y, int angle_z):
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23 | startX(startx),
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24 | startY(starty),
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25 | width(w),
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26 | height(h),
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27 | location(Vector3(loc_x, loc_y, loc_z)),
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28 | target(Vector3(target_x, target_y, target_z)),
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29 | angle(Vector3(angle_x, angle_y, angle_z)) { }
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30 |
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31 | Camera::~Camera(){}
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32 |
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33 | void Camera::move(double loc_x, double loc_y, double loc_z)
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34 | {
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35 | location = Vector3(loc_x, loc_y, loc_z);
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36 | }
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37 |
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38 | void Camera::aim(double target_x, double target_y, double target_z)
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39 | {
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40 | target = Vector3(target_x, target_y, target_z);
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41 | }
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42 |
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43 | void Camera::rotate(double angle_x, double angle_y, double angle_z)
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44 | {
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45 | angle = Vector3(angle_x, angle_y, angle_z);
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46 | }
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47 |
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48 | void Camera::activate(){
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49 | //fprintf(stderr, "camera: %d, %d\n", width, height);
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50 | glViewport(startX, startY, width, height);
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51 | glMatrixMode(GL_PROJECTION);
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52 | glLoadIdentity();
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53 | gluPerspective(30, (GLdouble)(width - startX)/(GLdouble)(height - startY), 0.1, 50.0);
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54 |
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55 | glMatrixMode(GL_MODELVIEW);
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56 | glLoadIdentity();
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57 |
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58 | gluLookAt(location.x, location.y, location.z,
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59 | target.x, target.y, target.z,
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60 | 0., 1., 0.);
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61 |
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62 | glRotated(angle.x, 1., 0., 0.);
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63 | glRotated(angle.y, 0., 1., 0.);
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64 | glRotated(angle.z, 0., 0., 1.);
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65 | }
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66 |
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67 | void Camera::set_screen_size(int sx, int sy, int w, int h){
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68 | width = w; height = h;
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69 | startX = sx; startY = sy;
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70 | }
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