Sandy engine Study Notes: Camera

Course 3: how to use a camera? By moving the camera to make changes to the photography object, the animation becomes easier. Because you don't need to change the properties of the object to be observed, just change the camera's changes.

 

 

1. Package
2. {
3. Import flash. display. Sprite;
4. Import flash. Events .*;
5. Import Sandy. Core. scene3d;
6. Import Sandy. Core. Data .*;
7. Import Sandy. Core. scenegraph .*;
8. Import Sandy. Materials .*;
9. Import Sandy. Materials. Attributes .*;
10. Import Sandy. Primitive .*;
11. Import Sandy. parser .*;
12. Import flash. UI. keyboard;
14. Public class my3d extends Sprite
15. {
16. Private var scene: scene3d;
17. Private var camera: camera3d;
18. Private var pot: shape3d;
20. Public Function my3d ()
21. {
22. VaR Parser: iparser = parser. Create ("asset/teieraase. ASE", parser. ase); // import the ASE format to rewrite the painting in flash.
24. Parser. addeventlistener (parserevent. Fail, onerror); // listen on Model import failure
25. Parser. addeventlistener (parserevent. init, createscene); // initialize the listener
27. Stage. addeventlistener (keyboardevent. key_down, keypressed );
28. Parser. parse (); // load the file
29. }
30. Private function onerror (pevt: parserevent): void
31. {
32. Trace ("file loading error ");
33. }
34. Private function createscene (p_eevent: parserevent): void
35. {
36. Camera = new camera3d (500,300); // create a camera
37. Camera. Y = 30;
38. Camera. z =-200;
40. VaR G: Group = group (p_eevent.group );
42. Pot = G. Children [0] As shape3d; // convert the model to the shape3d type
43. Pot. x = 0;
45. VaR materialattr: materialattributes = new materialattributes (New lightattributes (true, 0.2 ));
46. VaR material: Material = new colormaterial (0xe0f87e, 0.9, materialattr); // Add color material and light
47. Material. lightingenable = true; // enable light
48. VaR app: appearance = new appearance (material); // create an object surface
50. Pot. Appearance = app;
52. Scene = new scene3d ("scene", this, camera, G );
54. Addeventlistener (event. enter_frame, enterframehandler );
55. }
56. Private function enterframehandler (Event: Event): void
57. {
58. // Pot. Pan + = 3;
59. Scene. Render ();
60. }
61. Private function keypressed (Event: keyboardevent): void
62. {
63. Switch (event. keycode)
64. {
65. Case keyboard. Up:
66. Camera. Tilt + = 2; // move up
67. Break;
68. Case keyboard. down:
69. Camera. Tilt-= 2; // move down
70. Break;
71. Case keyboard. Right:
72. Camera. Pan-= 2; // move left
73. Break;
74. Case keyboard. left:
75. Camera. Pan + = 2; // move right
76. Break;
77. Case keyboard. Control:
78. Camera. Roll + = 2; // rotate
79. Break;
80. Case keyboard. page_down:
81. Camera. Z-= 5; // move backward
82. Break;
83. Case keyboard. page_up: // move back
84. Camera. Z + = 5;
85. Break;
86. }
87. }
89. }
90. }

 

The keyboard control enables the camera to go up, down, and rotate forward and backward.