1 #include <stdio.h>

2 #include <sys/time.h>

3 #include <GLES/gl.h>

4 #include "app.h"

5

6 static unsigned int get_msec(void);

7

8 int app_init(void)

9 {

10 printf("app_init called\n");

11

12 return 0;

13 }

14

15 void app_cleanup(void)

16 {

17 printf("app_cleanup called\n");

18 }

19

20 static float vert_col[] = { 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1 };

21 static float vert_pos[] = { 0.0, 0.6, 0.0, -0.6, -0.4, 0.0, 0.6, -0.4, 0.0 };

22

23 void app_display(void)

24 {

25 unsigned int msec = get_msec();

26

27 glClearColor(0.1, 0.1, 0.1, 1);

28 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

29

30 glMatrixMode(GL_MODELVIEW);

31 glLoadIdentity();

32 glRotatef(msec / 10.0, 0, 0, 1);

33

34 glEnableClientState(GL_VERTEX_ARRAY);

35 glEnableClientState(GL_COLOR_ARRAY);

36 glVertexPointer(3, GL_FLOAT, 0, vert_pos);

37 glColorPointer(4, GL_FLOAT, 0, vert_col);

38

39 glDrawArrays(GL_TRIANGLES, 0, 3);

40

41 glDisableClientState(GL_VERTEX_ARRAY);

42 glDisableClientState(GL_COLOR_ARRAY);

43

44 eglSwapBuffers(dpy, surf);

45 }

46

47 void app_resize(int x, int y)

48 {

49 printf("app_resize: %dx%d\n", x, y);

50 glViewport(0, 0, x, y);

51

52 float aspect = (float)x / (float)y;

53 glMatrixMode(GL_PROJECTION);

54 glLoadIdentity();

55 glScalef(1, aspect, 1);

56 }

57

58 void app_touch(int id, int press, int x, int y)

59 {

60 printf("app_touch: %s, id: %d, pos: %d %d\n", press ? "press" : "release", id, x, y);

61 }

62

63 void app_drag(int id, int x, int y)

64 {

65 printf("app_drag id: %d, pos: %d %d\n", id, x, y);

66 }

67

68 static unsigned int get_msec(void)

69 {

70 static struct timeval tv0;

71 struct timeval tv;

72

73 gettimeofday(&tv, 0);

74

75 if(tv0.tv_sec == 0 && tv0.tv_usec == 0) {

76 tv0 = tv;

77 return 0;

78 }

79 return (tv.tv_sec - tv0.tv_sec) * 1000 + (tv.tv_usec - tv0.tv_usec) / 1000;

80 }