1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
--
-- (c) Copyright 1993,1994,1995,1996 Silicon Graphics, Inc.
-- ALL RIGHTS RESERVED
-- Permission to use, copy, modify, and distribute this software for
-- any purpose and without fee is hereby granted, provided that the above
-- copyright notice appear in all copies and that both the copyright notice
-- and this permission notice appear in supporting documentation, and that
-- the name of Silicon Graphics, Inc. not be used in advertising
-- or publicity pertaining to distribution of the software without specific,
-- written prior permission.
--
-- THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
-- AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
-- INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
-- FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
-- GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
-- SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
-- KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
-- LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
-- THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
-- ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
-- ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
-- POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
--
-- US Government Users Restricted Rights
-- Use, duplication, or disclosure by the Government is subject to
-- restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
-- (c)(1)(ii) of the Rights in Technical Data and Computer Software
-- clause at DFARS 252.227-7013 and/or in similar or successor
-- clauses in the FAR or the DOD or NASA FAR Supplement.
-- Unpublished-- rights reserved under the copyright laws of the
-- United States. Contractor/manufacturer is Silicon Graphics,
-- Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
--
-- OpenGL(TM) is a trademark of Silicon Graphics, Inc.
--
with GL; use GL;
with GLU; use GLU;
package body Cone_Procs is
procedure DoInit is
mat_ambient : array (0 .. 3) of aliased GLfloat :=
(0.2, 0.2, 0.2, 1.0);
mat_diffuse : array (0 .. 3) of aliased GLfloat :=
(0.8, 0.8, 0.8, 1.0);
-- Specular and Shininess are not default values
mat_specular : array (0 .. 3) of aliased GLfloat :=
(1.0, 1.0, 1.0, 1.0);
mat_shininess : aliased GLfloat := 50.0;
light_ambient : array (0 .. 3) of aliased GLfloat :=
(0.0, 0.0, 0.0, 1.0);
light_diffuse : array (0 .. 3) of aliased GLfloat :=
(1.0, 1.0, 1.0, 1.0);
light_specular : array (0 .. 3) of aliased GLfloat :=
(1.0, 1.0, 1.0, 1.0);
light_position : array (0 .. 3) of aliased GLfloat :=
(1.0, 1.0, 1.0, 0.0);
lmodel_ambient : array (0 .. 3) of aliased GLfloat :=
(0.2, 0.2, 0.2, 1.0);
begin
glMaterialfv (GL_FRONT, GL_AMBIENT, mat_ambient (0)'Access);
glMaterialfv (GL_FRONT, GL_DIFFUSE, mat_diffuse (0)'Access);
glMaterialfv (GL_FRONT, GL_SPECULAR, mat_specular (0)'Access);
glMaterialfv (GL_FRONT, GL_SHININESS, mat_shininess'Access);
glLightfv (GL_LIGHT0, GL_AMBIENT, light_ambient (0)'Access);
glLightfv (GL_LIGHT0, GL_DIFFUSE, light_diffuse (0)'Access);
glLightfv (GL_LIGHT0, GL_SPECULAR, light_specular (0)'Access);
glLightfv (GL_LIGHT0, GL_POSITION, light_position (0)'Access);
glLightModelfv (GL_LIGHT_MODEL_AMBIENT, lmodel_ambient (0)'Access);
glEnable (GL_LIGHTING);
glEnable (GL_LIGHT0);
glEnable (GL_DEPTH_TEST);
end DoInit;
procedure solidCone (base : Float; height : Float) is
quadObj : GLUquadricObj_Ptr;
begin
quadObj := gluNewQuadric;
gluQuadricDrawStyle (quadObj, GLU_FILL);
gluQuadricNormals (quadObj, GLU_SMOOTH);
gluCylinder (quadObj, GLdouble(base), 0.0, GLdouble(height), 15, 10);
gluDeleteQuadric (quadObj);
end solidCone;
procedure DoDisplay is
begin
glClear (GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);
glPushMatrix;
glTranslatef (0.0, -1.0, 0.0);
glRotatef (250.0, 1.0, 0.0, 0.0);
solidCone (1.0, 2.0);
glPopMatrix;
glFlush;
end DoDisplay;
procedure ReshapeCallback (w : Integer; h : Integer) is
begin
glViewport (0, 0, GLsizei(w), GLsizei(h));
glMatrixMode (GL_PROJECTION);
glLoadIdentity;
if w <= h then
glOrtho (-1.5, 1.5, GLdouble (-1.5*Float (h)/Float (w)),
GLdouble (1.5*Float (h)/Float (w)), -10.0, 10.0);
else
glOrtho (GLdouble (-1.5*Float (w)/Float (h)),
GLdouble (1.5*Float (w)/Float (h)), -1.5, 1.5, -10.0, 10.0);
end if;
glMatrixMode (GL_MODELVIEW);
end ReshapeCallback;
end Cone_Procs;
|
