/[escript]/trunk/cusplibrary/cusp/opengl/spy/glut_2d_canvas.h
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Revision 4955 - (show annotations)
Tue May 20 04:33:15 2014 UTC (6 years, 5 months ago) by caltinay
Original Path: branches/diaplayground/cusplibrary/cusp/opengl/spy/glut_2d_canvas.h
File MIME type: text/plain
File size: 2838 byte(s)
added pristine copy of cusplibrary (apache license) to be used by ripley.

1 /*
2 * Copyright 2008-2010 NVIDIA Corporation
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #pragma once
18
19 #include "glut_window.h"
20
21 namespace cusp
22 {
23 namespace opengl
24 {
25 namespace spy
26 {
27
28 /**
29 * @file glut_2d_canvas.h
30 *
31 * The main glut_2d_canvas window handler. This
32 * class provides some slightly higher-level functions
33 * above a GLUT window.
34 */
35
36 class glut_2d_canvas
37 : public glut_window<glut_2d_canvas>
38 {
39 public:
40 glut_2d_canvas(int w, int h, const char* title);
41
42 // derived classes should override draw, not display
43 virtual void draw();
44
45 virtual void display();
46 virtual void reshape(int w, int h);
47 virtual void key(unsigned char key, int x, int y);
48 virtual void special_key(int key, int x, int y);
49 virtual void motion(int x, int y);
50 virtual void mouse_click(int button, int state, int x, int y);
51 virtual void menu(int value) {};
52
53 public:
54
55 // window properties
56 int width;
57 int height;
58
59 float natural_width;
60 float natural_height;
61
62 float zoom;
63
64 float trans_x;
65 float trans_y;
66
67 float center_x;
68 float center_y;
69
70 float aspect;
71
72 void set_natural_size(float w, float h)
73 {
74 natural_width = w;
75 natural_height = h;
76 glutPostRedisplay();
77 }
78
79 void set_center(float x, float y)
80 {
81 center_x = x;
82 center_y = y;
83 glutPostRedisplay();
84 }
85
86 void set_window_size(int w, int h)
87 {
88 glutSetWindow(glut_id);
89 glutReshapeWindow(w,h);
90 }
91
92 void set_zoom(float z)
93 {
94 zoom = z;
95 glutPostRedisplay();
96 }
97
98 void set_aspect(float a)
99 {
100 aspect = a;
101 }
102
103 void set_background_color(float r, float g, float b)
104 { background_color[0]=r; background_color[1]=g; background_color[2]=b; }
105
106
107
108 protected:
109 enum {
110 STATE_NONE = 100,
111 STATE_MOVE,
112 STATE_ZOOM
113 } mouse_state;
114
115 // used by the mouse handler
116 int mouse_begin_x;
117 int mouse_begin_y;
118
119 float virtual_width;
120 float virtual_height;
121
122 void begin_mouse_click(int x, int y)
123 {
124 mouse_begin_x = x;
125 mouse_begin_y = y;
126 }
127
128 float background_color[3];
129
130 bool display_finished;
131 int frame;
132 };
133
134 } // end spy
135 } // end opengl
136 } // end cusp
137
138 #include <cusp/opengl/spy/detail/glut_2d_canvas.inl>
139

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