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1 #include <stdio.h>
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2 #include <sys/time.h>
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3 #include <GLES/gl.h>
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4 #include "app.h"
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5
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6 static unsigned int get_msec(void);
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7
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8 int app_init(void)
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9 {
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10 printf("app_init called\n");
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11
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12 return 0;
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13 }
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14
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15 void app_cleanup(void)
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16 {
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17 printf("app_cleanup called\n");
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18 }
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19
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20 static float vert_col[] = { 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1 };
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21 static float vert_pos[] = { 0.0, 0.6, 0.0, -0.6, -0.4, 0.0, 0.6, -0.4, 0.0 };
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22
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23 void app_display(void)
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24 {
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25 unsigned int msec = get_msec();
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26
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27 glClearColor(0.1, 0.1, 0.1, 1);
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28 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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29
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30 glMatrixMode(GL_MODELVIEW);
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31 glLoadIdentity();
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32 glRotatef(msec / 10.0, 0, 0, 1);
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33
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34 glEnableClientState(GL_VERTEX_ARRAY);
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35 glEnableClientState(GL_COLOR_ARRAY);
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36 glVertexPointer(3, GL_FLOAT, 0, vert_pos);
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37 glColorPointer(4, GL_FLOAT, 0, vert_col);
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38
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39 glDrawArrays(GL_TRIANGLES, 0, 3);
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40
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41 glDisableClientState(GL_VERTEX_ARRAY);
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42 glDisableClientState(GL_COLOR_ARRAY);
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43
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44 eglSwapBuffers(dpy, surf);
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45 }
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46
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47 void app_resize(int x, int y)
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48 {
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49 printf("app_resize: %dx%d\n", x, y);
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50 glViewport(0, 0, x, y);
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51
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52 float aspect = (float)x / (float)y;
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53 glMatrixMode(GL_PROJECTION);
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54 glLoadIdentity();
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55 glScalef(1, aspect, 1);
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56 }
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57
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58 void app_touch(int id, int press, int x, int y)
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59 {
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60 printf("app_touch: %s, id: %d, pos: %d %d\n", press ? "press" : "release", id, x, y);
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61 }
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62
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63 void app_drag(int id, int x, int y)
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64 {
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65 printf("app_drag id: %d, pos: %d %d\n", id, x, y);
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66 }
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67
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68 static unsigned int get_msec(void)
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69 {
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70 static struct timeval tv0;
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71 struct timeval tv;
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72
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73 gettimeofday(&tv, 0);
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74
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75 if(tv0.tv_sec == 0 && tv0.tv_usec == 0) {
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76 tv0 = tv;
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77 return 0;
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78 }
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79 return (tv.tv_sec - tv0.tv_sec) * 1000 + (tv.tv_usec - tv0.tv_usec) / 1000;
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80 }
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