1 /*   EXTRAITS DE LA LICENCE
2 	Copyright CEA, contributeurs : Luc BILLARD et Damien
3 	CALISTE, laboratoire L_Sim, (2001-2005)
4 
5 	Adresse mèl :
6 	BILLARD, non joignable par mèl ;
7 	CALISTE, damien P caliste AT cea P fr.
8 
9 	Ce logiciel est un programme informatique servant à visualiser des
10 	structures atomiques dans un rendu pseudo-3D.
11 
12 	Ce logiciel est régi par la licence CeCILL soumise au droit français et
13 	respectant les principes de diffusion des logiciels libres. Vous pouvez
14 	utiliser, modifier et/ou redistribuer ce programme sous les conditions
15 	de la licence CeCILL telle que diffusée par le CEA, le CNRS et l'INRIA
16 	sur le site "http://www.cecill.info".
17 
18 	Le fait que vous puissiez accéder à cet en-tête signifie que vous avez
19 	pris connaissance de la licence CeCILL, et que vous en avez accepté les
20 	termes (cf. le fichier Documentation/licence.fr.txt fourni avec ce logiciel).
21 */
22 
23 /*   LICENCE SUM UP
24 	Copyright CEA, contributors : Luc BILLARD et Damien
25 	CALISTE, laboratoire L_Sim, (2001-2005)
26 
27 	E-mail address:
28 	BILLARD, not reachable any more ;
29 	CALISTE, damien P caliste AT cea P fr.
30 
31 	This software is a computer program whose purpose is to visualize atomic
32 	configurations in 3D.
33 
34 	This software is governed by the CeCILL  license under French law and
35 	abiding by the rules of distribution of free software.  You can  use,
36 	modify and/ or redistribute the software under the terms of the CeCILL
37 	license as circulated by CEA, CNRS and INRIA at the following URL
38 	"http://www.cecill.info".
39 
40 	The fact that you are presently reading this means that you have had
41 	knowledge of the CeCILL license and that you accept its terms. You can
42 	find a copy of this licence shipped with this software at Documentation/licence.en.txt.
43 */
44 #ifndef CAMERA_H
45 #define CAMERA_H
46 
47 #include <glib.h>
48 #include <glib-object.h>
49 #include <visu_box.h>
50 #include <coreTools/toolMatrix.h>
51 #include <coreTools/toolPhysic.h>
52 
53 G_BEGIN_DECLS
54 
55 typedef struct _VisuGlCamera VisuGlCamera;
56 struct _VisuGlCamera
57 {
58   /* Perspective. */
59   double d_red;
60   /* Orientation. */
61   double theta, phi, omega;
62   /* Position. */
63   double xs, ys;
64   /* Zoom. */
65   double gross;
66   /* A length reference and its unit. */
67   double length0;
68   ToolUnits unit;
69 
70   /* Up vector. */
71   double up[3];
72   /* Up axis. */
73   ToolXyzDir upAxis;
74   /* Eye target and eye position. */
75   double centre[3], eye[3];
76 };
77 
78 GType visu_gl_camera_get_type(void);
79 /**
80  * VISU_TYPE_GL_CAMERA:
81  *
82  * The type of #VisuGlCamera objects.
83  */
84 #define VISU_TYPE_GL_CAMERA (visu_gl_camera_get_type())
85 
86 void visu_gl_camera_copy(VisuGlCamera *to, const VisuGlCamera *from);
87 /**
88  * VISU_GL_CAMERA_THETA:
89  *
90  * Value used in the visu_gl_camera_setThetaPhiOmega() method to store the tetha angle.
91  */
92 #define VISU_GL_CAMERA_THETA (1 << 1)
93 /**
94  * VISU_GL_CAMERA_PHI:
95  *
96  * Value used in the visu_gl_camera_setThetaPhiOmega() method to store the phi angle.
97  */
98 #define VISU_GL_CAMERA_PHI   (1 << 2)
99 /**
100  * VISU_GL_CAMERA_OMEGA:
101  *
102  * Value used in the visu_gl_camera_setThetaPhiOmega() method to store the omega angle.
103  */
104 #define VISU_GL_CAMERA_OMEGA   (1 << 3)
105 int visu_gl_camera_setThetaPhiOmega(VisuGlCamera *camera, float valueTheta,
106                                     float valuePhi, float valueOmega, int mask);
107 /**
108  * VISU_GL_CAMERA_XS:
109  *
110  * Value used in the visu_gl_camera_setXsYs() method to store the horizontal offset.
111  */
112 #define VISU_GL_CAMERA_XS (1 << 1)
113 /**
114  * VISU_GL_CAMERA_YS:
115  *
116  * Value used in the visu_gl_camera_setXsYs() method to store the vertical offset.
117  */
118 #define VISU_GL_CAMERA_YS   (1 << 2)
119 int visu_gl_camera_setXsYs(VisuGlCamera *camera,
120                                 float valueX, float valueY, int mask);
121 gboolean visu_gl_camera_setGross(VisuGlCamera *camera, float value);
122 gboolean visu_gl_camera_setPersp(VisuGlCamera *camera, float value);
123 
124 gboolean visu_gl_camera_setRefLength(VisuGlCamera *camera, float value, ToolUnits unit);
125 float visu_gl_camera_getRefLength(VisuGlCamera *camera, ToolUnits *unit);
126 void visu_gl_camera_setUpAxis(VisuGlCamera *camera, ToolXyzDir upAxis);
127 void visu_gl_camera_getScreenAxes(VisuGlCamera *camera, float xAxis[3], float yAxis[3]);
128 
129 #undef near
130 #undef far
131 typedef struct _VisuGlWindow VisuGlWindow;
132 struct _VisuGlWindow
133 {
134   float extens;
135   ToolUnits unit;
136 
137   guint width, height;
138   double near, far;
139   double left, right, bottom, top;
140 };
141 gboolean visu_gl_window_setViewport(VisuGlWindow *window, guint width, guint height);
142 gboolean visu_gl_window_setAddLength(VisuGlWindow *window, float value, ToolUnits unit);
143 float visu_gl_window_getAddLength(VisuGlWindow *window, ToolUnits *unit);
144 float visu_gl_window_getFileUnitPerPixel(VisuGlWindow *window);
145 
146 /***************************/
147 /* The #VisuGlView object. */
148 /***************************/
149 /**
150  * VISU_TYPE_GL_VIEW:
151  *
152  * The type of #VisuGlView objects.
153  */
154 #define VISU_TYPE_GL_VIEW (visu_gl_view_get_type())
155 /**
156  * VISU_GL_VIEW:
157  * @obj: a #GObject to cast.
158  *
159  * Cast the given @obj into #VisuGlView type.
160  */
161 #define VISU_GL_VIEW(obj)	     (G_TYPE_CHECK_INSTANCE_CAST(obj, VISU_TYPE_GL_VIEW, VisuGlView))
162 /**
163  * VISU_GL_VIEW_CLASS:
164  * @klass: a #GObjectClass to cast.
165  *
166  * Cast the given @klass into #VisuGlViewClass.
167  */
168 #define VISU_GL_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST(klass, VISU_TYPE_GL_VIEW, VisuGlViewClass))
169 /**
170  * VISU_IS_GL_VIEW:
171  * @obj: a #GObject to test.
172  *
173  * Test if the given @ogj is of the type of #VisuGlView object.
174  */
175 #define VISU_IS_GL_VIEW(obj)    (G_TYPE_CHECK_INSTANCE_TYPE(obj, VISU_TYPE_GL_VIEW))
176 /**
177  * VISU_IS_GL_VIEW_CLASS:
178  * @klass: a #GObjectClass to test.
179  *
180  * Test if the given @klass is of the type of #VisuGlViewClass class.
181  */
182 #define VISU_IS_GL_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE(klass, VISU_TYPE_GL_VIEW))
183 /**
184  * VISU_GL_VIEW_GET_CLASS:
185  * @obj: a #GObject to get the class of.
186  *
187  * It returns the class of the given @obj.
188  */
189 #define VISU_GL_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS(obj, VISU_TYPE_GL_VIEW, VisuGlViewClass))
190 
191 typedef struct _VisuGlViewPrivate VisuGlViewPrivate;
192 typedef struct _VisuGlView VisuGlView;
193 
194 /**
195  * VisuGlView:
196  *
197  * A container structure to deal with OpenGL observer position, size of rendering
198  * viewport...
199  */
200 struct _VisuGlView
201 {
202   VisuObject parent;
203 
204   VisuGlCamera camera;
205   VisuGlWindow window;
206 
207   VisuGlViewPrivate *priv;
208 };
209 
210 typedef struct _VisuGlViewClass VisuGlViewClass;
211 /**
212  * VisuGlViewClass:
213  * @parent: the parent class.
214  *
215  * An opaque structure.
216  */
217 struct _VisuGlViewClass
218 {
219   VisuObjectClass parent;
220 };
221 
222 GType visu_gl_view_get_type(void);
223 VisuGlView* visu_gl_view_new(void);
224 VisuGlView* visu_gl_view_new_withSize(guint w, guint h);
225 
226 void visu_gl_view_initContext(VisuGlView *view);
227 gboolean visu_gl_view_setThetaPhiOmega(VisuGlView *view, float valueTheta,
228 				 float valuePhi, float valueOmega, int mask);
229 gboolean visu_gl_view_setXsYs(VisuGlView *view,
230 				    float valueX, float valueY, int mask);
231 gboolean visu_gl_view_setGross(VisuGlView *view, float value);
232 gboolean visu_gl_view_setPersp(VisuGlView *view, float value);
233 
234 gboolean visu_gl_view_setRefLength(VisuGlView *view, float lg, ToolUnits units);
235 gboolean visu_gl_view_setObjectRadius(VisuGlView *view, float lg, ToolUnits units);
236 gboolean visu_gl_view_setViewport(VisuGlView *view, guint width, guint height);
237 
238 gint visu_gl_view_getDetailLevel(const VisuGlView *view, float dimension);
239 void visu_gl_view_rotateBox(VisuGlView *view, float dTheta, float dPhi, float angles[2]);
240 void visu_gl_view_rotateCamera(VisuGlView *view, float dTheta, float dPhi, float angles[3]);
241 void visu_gl_view_alignToAxis(VisuGlView *view, ToolXyzDir axis);
242 float visu_gl_view_getZCoordinate(VisuGlView *view, float xyz[3]);
243 void visu_gl_view_getRealCoordinates(VisuGlView *view, float xyz[3],
244                                      float winx, float winy, float winz);
245 
246 gboolean visu_gl_view_setPrecision(VisuGlView *view, float value);
247 float visu_gl_view_getPrecision(const VisuGlView *view);
248 
249 G_END_DECLS
250 
251 #endif
252