/tutorial/vision/opengl/NeHe/lesson06/cube.e

http://github.com/tybor/Liberty · Specman e · 142 lines · 112 code · 29 blank · 1 comment · 1 complexity · 4988cf0fead1f7bfb1e4ba47b1314c88 MD5 · raw file 

    

  1. class CUBE
    2. 

  2. 

  3. inherit
    4. 

  4. 	GL_OBJECT
    5. 

  5. 

  6. creation
    7. 

  7. 	make_at_origin, make_with_position
    8. 

  8. 

  9. feature{ANY}
    10. 

  10. 	
    11. 

  11. 	build is
    12. 

  12. 		do
    13. 

  13. 			create vertices.make(24)
    14. 

  14. 			vertices.put(create {VERTEX}.make(-1, 1, 1), 0)
    15. 

  15. 			vertices.put(create {VERTEX}.make(-1, -1, 1), 1)
    16. 

  16. 			vertices.put(create {VERTEX}.make(1, -1, 1), 2)
    17. 

  17. 			vertices.put(create {VERTEX}.make(1, 1, 1), 3)
    18. 

  18. 			vertices.put(create {VERTEX}.make(1, 1, -1), 4)
    19. 

  19. 			vertices.put(create {VERTEX}.make(-1, 1, -1), 5)
    20. 

  20. 			vertices.put(create {VERTEX}.make(-1, -1, -1), 6)
    21. 

  21. 			vertices.put(create {VERTEX}.make(1, -1, -1), 7)
    22. 

  22. 			
    23. 

  23. 			vertices.put(create {VERTEX}.make(-1, 1, 1), 8)
    24. 

  24. 			vertices.put(create {VERTEX}.make(-1, -1, 1), 9)
    25. 

  25. 			vertices.put(create {VERTEX}.make(1, -1, 1), 10)
    26. 

  26. 			vertices.put(create {VERTEX}.make(1, 1, 1), 11)
    27. 

  27. 			vertices.put(create {VERTEX}.make(1, 1, -1), 12)
    28. 

  28. 			vertices.put(create {VERTEX}.make(-1, 1, -1), 13)
    29. 

  29. 			vertices.put(create {VERTEX}.make(-1, -1, -1), 14)
    30. 

  30. 			vertices.put(create {VERTEX}.make(1, -1, -1), 15)
    31. 

  31. 			
    32. 

  32. 			vertices.put(create {VERTEX}.make(-1, 1, 1), 16)
    33. 

  33. 			vertices.put(create {VERTEX}.make(-1, -1, 1), 17)
    34. 

  34. 			vertices.put(create {VERTEX}.make(1, -1, 1), 18)
    35. 

  35. 			vertices.put(create {VERTEX}.make(1, 1, 1), 19)
    36. 

  36. 			vertices.put(create {VERTEX}.make(1, 1, -1), 20)
    37. 

  37. 			vertices.put(create {VERTEX}.make(-1, 1, -1), 21)
    38. 

  38. 			vertices.put(create {VERTEX}.make(-1, -1, -1), 22)
    39. 

  39. 			vertices.put(create {VERTEX}.make(1, -1, -1), 23)
    40. 

  40. 

  41. 			-- Here, vertices can only be shared between two facets of the same cube's face because of texture mapping
    42. 

  42. 			facets.add_last(create {FACET}.make(vertices.item(0), vertices.item(1), vertices.item(3)))
    43. 

  43. 			facets.add_last(create {FACET}.make(vertices.item(1), vertices.item(2), vertices.item(3)))
    44. 

  44. 

  45. 			facets.add_last(create {FACET}.make(vertices.item(11), vertices.item(10), vertices.item(4)))
    46. 

  46. 			facets.add_last(create {FACET}.make(vertices.item(10), vertices.item(7), vertices.item(4)))
    47. 

  47. 

  48. 			facets.add_last(create {FACET}.make(vertices.item(5), vertices.item(6), vertices.item(8)))
    49. 

  49. 			facets.add_last(create {FACET}.make(vertices.item(6), vertices.item(9), vertices.item(8)))
    50. 

  50. 

  51. 			facets.add_last(create {FACET}.make(vertices.item(13), vertices.item(16), vertices.item(12)))
    52. 

  52. 			facets.add_last(create {FACET}.make(vertices.item(16), vertices.item(19), vertices.item(12)))
    53. 

  53. 

  54. 			facets.add_last(create {FACET}.make(vertices.item(17), vertices.item(14), vertices.item(18)))
    55. 

  55. 			facets.add_last(create {FACET}.make(vertices.item(14), vertices.item(15), vertices.item(18)))
    56. 

  56. 

  57. 			facets.add_last(create {FACET}.make(vertices.item(20), vertices.item(23), vertices.item(21)))
    58. 

  58. 			facets.add_last(create {FACET}.make(vertices.item(23), vertices.item(22), vertices.item(21)))
    59. 

  59. 			
    60. 

  60. 			load_textures
    61. 

  61. 

  62. 			facets.item(facets.lower + 0).set_texture(texture)
    63. 

  63. 			facets.item(facets.lower + 0).vertex1.set_2d_texture_coord(0, 1)
    64. 

  64. 			facets.item(facets.lower + 0).vertex2.set_2d_texture_coord(0, 0)
    65. 

  65. 			facets.item(facets.lower + 0).vertex3.set_2d_texture_coord(1, 1)
    66. 

  66. 

  67. 			facets.item(facets.lower + 1).set_texture(texture)
    68. 

  68. 			facets.item(facets.lower + 1).vertex1.set_2d_texture_coord(0, 0)
    69. 

  69. 			facets.item(facets.lower + 1).vertex2.set_2d_texture_coord(1, 0)
    70. 

  70. 			facets.item(facets.lower + 1).vertex3.set_2d_texture_coord(1, 1)
    71. 

  71. 

  72. 			facets.item(facets.lower + 2).set_texture(texture)
    73. 

  73. 			facets.item(facets.lower + 2).vertex1.set_2d_texture_coord(0, 1)
    74. 

  74. 			facets.item(facets.lower + 2).vertex2.set_2d_texture_coord(0, 0)
    75. 

  75. 			facets.item(facets.lower + 2).vertex3.set_2d_texture_coord(1, 1)
    76. 

  76. 

  77. 			facets.item(facets.lower + 3).set_texture(texture)
    78. 

  78. 			facets.item(facets.lower + 3).vertex1.set_2d_texture_coord(0, 0)
    79. 

  79. 			facets.item(facets.lower + 3).vertex2.set_2d_texture_coord(1, 0)
    80. 

  80. 			facets.item(facets.lower + 3).vertex3.set_2d_texture_coord(1, 1)
    81. 

  81. 

  82. 			facets.item(facets.lower + 4).set_texture(texture)
    83. 

  83. 			facets.item(facets.lower + 4).vertex1.set_2d_texture_coord(0, 1)
    84. 

  84. 			facets.item(facets.lower + 4).vertex2.set_2d_texture_coord(0, 0)
    85. 

  85. 			facets.item(facets.lower + 4).vertex3.set_2d_texture_coord(1, 1)
    86. 

  86. 

  87. 			facets.item(facets.lower + 5).set_texture(texture)
    88. 

  88. 			facets.item(facets.lower + 5).vertex1.set_2d_texture_coord(0, 0)
    89. 

  89. 			facets.item(facets.lower + 5).vertex2.set_2d_texture_coord(1, 0)
    90. 

  90. 			facets.item(facets.lower + 5).vertex3.set_2d_texture_coord(1, 1)
    91. 

  91. 

  92. 			facets.item(facets.lower + 6).set_texture(texture)
    93. 

  93. 			facets.item(facets.lower + 6).vertex1.set_2d_texture_coord(0, 1)
    94. 

  94. 			facets.item(facets.lower + 6).vertex2.set_2d_texture_coord(0, 0)
    95. 

  95. 			facets.item(facets.lower + 6).vertex3.set_2d_texture_coord(1, 1)
    96. 

  96. 

  97. 			facets.item(facets.lower + 7).set_texture(texture)
    98. 

  98. 			facets.item(facets.lower + 7).vertex1.set_2d_texture_coord(0, 0)
    99. 

  99. 			facets.item(facets.lower + 7).vertex2.set_2d_texture_coord(1, 0)
    100. 

  100. 			facets.item(facets.lower + 7).vertex3.set_2d_texture_coord(1, 1)
    101. 

  101. 

  102. 			facets.item(facets.lower + 8).set_texture(texture)
    103. 

  103. 			facets.item(facets.lower + 8).vertex1.set_2d_texture_coord(0, 1)
    104. 

  104. 			facets.item(facets.lower + 8).vertex2.set_2d_texture_coord(0, 0)
    105. 

  105. 			facets.item(facets.lower + 8).vertex3.set_2d_texture_coord(1, 1)
    106. 

  106. 

  107. 			facets.item(facets.lower + 9).set_texture(texture)
    108. 

  108. 			facets.item(facets.lower + 9).vertex1.set_2d_texture_coord(0, 0)
    109. 

  109. 			facets.item(facets.lower + 9).vertex2.set_2d_texture_coord(1, 0)
    110. 

  110. 			facets.item(facets.lower + 9).vertex3.set_2d_texture_coord(1, 1)
    111. 

  111. 

  112. 			facets.item(facets.lower + 10).set_texture(texture)
    113. 

  113. 			facets.item(facets.lower + 10).vertex1.set_2d_texture_coord(0, 1)
    114. 

  114. 			facets.item(facets.lower + 10).vertex2.set_2d_texture_coord(0, 0)
    115. 

  115. 			facets.item(facets.lower + 10).vertex3.set_2d_texture_coord(1, 1)
    116. 

  116. 

  117. 			facets.item(facets.lower + 11).set_texture(texture)
    118. 

  118. 			facets.item(facets.lower + 11).vertex1.set_2d_texture_coord(0, 0)
    119. 

  119. 			facets.item(facets.lower + 11).vertex2.set_2d_texture_coord(1, 0)
    120. 

  120. 			facets.item(facets.lower + 11).vertex3.set_2d_texture_coord(1, 1)
    121. 

  121. 		end
    122. 

  122. 	
    123. 

  123. 	load_textures is
    124. 

  124. 		local
    125. 

  125. 			image: BMP_IMG
    126. 

  126. 		do
    127. 

  127. 			create image.load_from_file("nehe.bmp")
    128. 

  128. 			if image.is_loaded then
    129. 

  129. 				create texture.make(image)
    130. 

  130. 			end
    131. 

  131. 		end
    132. 

  132. 

  133. 	turn (angle: REAL) is
    134. 

  134. 		do
    135. 

  135. 			set_orientation(0.2 * angle, 0.3 * angle, 0.4 * angle)
    136. 

  136. 		end
    137. 

  137. 	
    138. 

  138. feature{}
    139. 

  139. 	texture: TEXTURE_2D
    140. 

  140. 	vertices: FAST_ARRAY[VERTEX]
    141. 

  141. 

  142. end
    143.