1 (defpackage :gtk-glext-demo
2 (:use :cl :gtk :gtkglext :gobject :glib :iter)
7 (in-package :gtk-glext-demo)
11 (defun draw (widget event)
12 (declare (ignore widget event))
13 (gl:clear-color 0 0 0 0)
17 (gl:shade-model :smooth)
18 (gl:light-model :light-model-local-viewer 1)
19 (gl:color-material :front :ambient-and-diffuse)
20 (gl:enable :light0 :lighting :cull-face :depth-test)
23 (gl:rotate *theta* 1 1 0)
24 (gl:light :light0 :position '(0 1 1 0))
25 (gl:light :light0 :diffuse '(0.2 0.4 0.6 0))
26 (gl:clear :color-buffer-bit :depth-buffer-bit)
29 (glut:solid-teapot 1.5)
36 (let ((window (make-instance 'gtk-window
38 :window-position :center
42 (v-box (make-instance 'v-box))
43 (label (make-instance 'label :label "Click me!"))
44 (drawing (make-instance 'gl-drawing-area :on-expose #'draw)))
45 (box-pack-start v-box drawing)
46 (box-pack-start v-box label :expand nil)
47 (container-add window v-box)
48 (let ((source-id (gtk-main-add-timeout 100 (lambda ()
50 (mod (+ *theta* 0.5) 360))
51 (widget-queue-draw drawing)
52 (setf (label-label label)
53 (format nil "Theta = ~A" *theta*))
55 (connect-signal window "delete-event" (lambda (w e)
56 (declare (ignore w e))
57 (g-source-remove source-id)
59 (widget-show window :all t))))
67 (let ((window (make-instance 'gtk-window
68 :window-position :center
72 (area (make-instance 'gl-drawing-area :on-expose #'planet-draw :on-resize #'planet-resize)))
73 (container-add window area)
74 (connect-signal window "realize"
76 (pushnew :key-press-mask (gdk:gdk-window-events (widget-window window)))))
77 (connect-signal window "key-press-event"
81 (let ((c (aref (gdk:event-key-string e) 0)))
83 (#\d (incf *d* 10) (widget-queue-draw area))
84 (#\D (incf *d* -10) (widget-queue-draw area))
85 (#\y (incf *y* 5) (widget-queue-draw area))
86 (#\Y (incf *y* -5) (widget-queue-draw area)))))
88 (let ((timer-id (gtk-main-add-timeout 10 (lambda ()
89 (incf *d* 1) (incf *y* 0.5)
90 (widget-queue-draw area)
92 (connect-signal window "delete-event" (lambda (w e)
93 (declare (ignore w e))
94 (g-source-remove timer-id)
96 (widget-show window))))
98 (defun planet-draw (w e)
99 (declare (ignore w e))
100 (gl:clear-color 0 0 0 0)
101 (gl:shade-model :flat)
102 (gl:clear :color-buffer)
104 (gl:with-pushed-matrix
106 (gl:translate 0 0 -2)
108 (glut:wire-sphere 1 20 16)
109 ;; draw smaller planet
110 (gl:rotate *y* 0 1 0)
112 (gl:rotate *d* 0 1 0)
113 (glut:wire-sphere 0.2 10 8))
116 (defun planet-resize (w width height)
118 (gl:viewport 0 0 width height)
119 (gl:matrix-mode :projection)
121 (glu:perspective 60 (/ width height) 1 20)
122 (gl:matrix-mode :modelview)
124 (glu:look-at 0 0 5 0 0 0 0 1 0))
126 (defclass opengl-window (gtk-window)
127 ((expose-fn-text-view :initform (make-instance 'text-view) :reader opengl-window-expose-fn-text-view)
128 (resize-fn-text-view :initform (make-instance 'text-view) :reader opengl-window-resize-fn-text-view)
129 (expose-fn :initform nil :accessor opengl-window-expose-fn)
130 (resize-fn :initform nil :accessor opengl-window-resize-fn)
131 (drawing-area :initform (make-instance 'gl-drawing-area :height-request 100) :reader opengl-window-drawing-area))
132 (:metaclass gobject-class)
134 :title "Lisp interactive OpenGL"
137 :window-position :center))
139 (defmethod initialize-instance :after ((window opengl-window) &key &allow-other-keys)
140 (setf (text-buffer-text (text-view-buffer (opengl-window-expose-fn-text-view window)))
143 (text-buffer-text (text-view-buffer (opengl-window-resize-fn-text-view window)))
144 ";; Resize-fn. Parameters: w h
146 (let-ui (v-paned :var v
147 (:expr (opengl-window-drawing-area window))
148 :resize t :shrink nil
152 :hscrollbar-policy :automatic
153 :vscrollbar-policy :automatic
154 (:expr (opengl-window-expose-fn-text-view window)))
155 :resize t :shrink nil
157 :hscrollbar-policy :automatic
158 :vscrollbar-policy :automatic
159 (:expr (opengl-window-resize-fn-text-view window)))
160 :resize t :shrink nil)
162 (button :label "Update functions" :var update-fns-button) :expand nil
163 (button :label "Redraw" :var redraw-button) :expand nil)
165 :resize t :shrink nil)
166 (container-add window v)
167 (connect-signal update-fns-button "clicked"
170 (update-fns window)))
171 (connect-signal redraw-button "clicked"
174 (widget-queue-draw (opengl-window-drawing-area window))))
175 (let ((area (opengl-window-drawing-area window)))
176 (setf (gl-drawing-area-on-expose area)
178 (declare (ignore w e))
179 (opengl-interactive-on-expose window))
180 (gl-drawing-area-on-resize area)
182 (declare (ignore widget))
183 (opengl-interactive-on-resize window w h))))))
185 (defun opengl-interactive-on-expose (window)
186 (if (opengl-window-expose-fn window)
188 (funcall (opengl-window-expose-fn window))
191 (setf (opengl-window-expose-fn window) nil)
192 (progn (gl:clear-color 0 0 0 0)
194 (gl:depth-func :less)
196 (gl:shade-model :smooth)
197 (gl:light-model :light-model-local-viewer 1)
198 (gl:color-material :front :ambient-and-diffuse)
199 (gl:enable :light0 :lighting :cull-face :depth-test)
201 (gl:translate 0 0 -5)
202 (gl:rotate *theta* 1 1 0)
203 (gl:light :light0 :position '(0 1 1 0))
204 (gl:light :light0 :diffuse '(0.2 0.4 0.6 0))
205 (gl:clear :color-buffer-bit :depth-buffer-bit)
208 (glut:solid-teapot 1.5)
211 (progn (gl:clear-color 0 0 0 0)
213 (gl:depth-func :less)
215 (gl:shade-model :smooth)
216 (gl:light-model :light-model-local-viewer 1)
217 (gl:color-material :front :ambient-and-diffuse)
218 (gl:enable :light0 :lighting :cull-face :depth-test)
220 (gl:translate 0 0 -5)
221 (gl:rotate *theta* 1 1 0)
222 (gl:light :light0 :position '(0 1 1 0))
223 (gl:light :light0 :diffuse '(0.2 0.4 0.6 0))
224 (gl:clear :color-buffer-bit :depth-buffer-bit)
227 (glut:solid-teapot 1.5)
231 (defun opengl-interactive-on-resize (window w h)
232 (if (opengl-window-resize-fn window)
234 (funcall (opengl-window-resize-fn window) w h)
237 (setf (opengl-window-resize-fn window) nil)
238 (gl:viewport 0 0 w h)
239 (gl:matrix-mode :projection)
241 (glu:perspective 60 (/ w h) 1 20)
242 (gl:matrix-mode :modelview)
245 (gl:viewport 0 0 w h)
246 (gl:matrix-mode :projection)
248 (glu:perspective 60 (/ w h) 1 20)
249 (gl:matrix-mode :modelview)
251 #+nil(glu:look-at 0 0 5 0 0 0 0 1 0)
254 (defpackage :cl-gtk2-gl-demo-read-package
255 (:use :cl :cl-opengl))
257 (defun read-exprs (string)
258 (with-input-from-string
260 (let ((eof (gensym)))
261 (iter (for expr = (read stream nil eof))
262 (until (eq expr eof))
265 (defun read-fn (string fn-args)
266 (let ((*package* (find-package :cl-gtk2-gl-demo-read-package)))
267 (let ((exprs (read-exprs string)))
269 (eval `(lambda (,@fn-args)
272 (defparameter *resize-fn-args* (list (intern "W" :cl-gtk2-gl-demo-read-package)
273 (intern "H" :cl-gtk2-gl-demo-read-package)))
275 (defun update-fns (window)
276 (with-gtk-message-error-handler
277 (let ((expose-fn (read-fn (text-buffer-text (text-view-buffer (opengl-window-expose-fn-text-view window))) nil))
278 (resize-fn (read-fn (text-buffer-text (text-view-buffer (opengl-window-resize-fn-text-view window)))
280 (assert (or (null expose-fn) (functionp expose-fn)))
281 (assert (or (null resize-fn) (functionp resize-fn)))
282 (setf (opengl-window-expose-fn window) expose-fn
283 (opengl-window-resize-fn window) resize-fn)
284 (widget-queue-draw (opengl-window-drawing-area window)))))
286 (defun opengl-interactive ()
287 (let ((output *standard-output*))
289 (setf *standard-output* output)
290 (let ((w (make-instance 'opengl-window)))