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"
77 (pushnew :key-press-mask (gdk:gdk-window-events (widget-window window)))))
78 (connect-signal window "key-press-event"
82 (let ((c (aref (gdk:event-key-string e) 0)))
84 (#\d (incf *d* 10) (widget-queue-draw area))
85 (#\D (incf *d* -10) (widget-queue-draw area))
86 (#\y (incf *y* 5) (widget-queue-draw area))
87 (#\Y (incf *y* -5) (widget-queue-draw area)))))
89 (let ((timer-id (gtk-main-add-timeout 10 (lambda ()
90 (incf *d* 1) (incf *y* 0.5)
91 (widget-queue-draw area)
93 (connect-signal window "delete-event" (lambda (w e)
94 (declare (ignore w e))
95 (g-source-remove timer-id)
97 (widget-show window))))
99 (defun planet-draw (w e)
100 (declare (ignore w e))
101 (gl:clear-color 0 0 0 0)
102 (gl:shade-model :flat)
103 (gl:clear :color-buffer)
105 (gl:with-pushed-matrix
107 (gl:translate 0 0 -2)
109 (glut:wire-sphere 1 20 16)
110 ;; draw smaller planet
111 (gl:rotate *y* 0 1 0)
113 (gl:rotate *d* 0 1 0)
114 (glut:wire-sphere 0.2 10 8))
117 (defun planet-resize (w width height)
119 (gl:viewport 0 0 width height)
120 (gl:matrix-mode :projection)
122 (glu:perspective 60 (/ width height) 1 20)
123 (gl:matrix-mode :modelview)
125 (glu:look-at 0 0 5 0 0 0 0 1 0))
127 (defclass opengl-window (gtk-window)
128 ((expose-fn-text-view :initform (make-instance 'text-view) :reader opengl-window-expose-fn-text-view)
129 (resize-fn-text-view :initform (make-instance 'text-view) :reader opengl-window-resize-fn-text-view)
130 (expose-fn :initform nil :accessor opengl-window-expose-fn)
131 (resize-fn :initform nil :accessor opengl-window-resize-fn)
132 (drawing-area :initform (make-instance 'gl-drawing-area :height-request 100) :reader opengl-window-drawing-area))
133 (:metaclass gobject-class)
135 :title "Lisp interactive OpenGL"
138 :window-position :center))
140 (defmethod initialize-instance :after ((window opengl-window) &key &allow-other-keys)
141 (setf (text-buffer-text (text-view-buffer (opengl-window-expose-fn-text-view window)))
144 (text-buffer-text (text-view-buffer (opengl-window-resize-fn-text-view window)))
145 ";; Resize-fn. Parameters: w h
147 (let-ui (v-paned :var v
148 (:expr (opengl-window-drawing-area window))
149 :resize t :shrink nil
153 :hscrollbar-policy :automatic
154 :vscrollbar-policy :automatic
155 (:expr (opengl-window-expose-fn-text-view window)))
156 :resize t :shrink nil
158 :hscrollbar-policy :automatic
159 :vscrollbar-policy :automatic
160 (:expr (opengl-window-resize-fn-text-view window)))
161 :resize t :shrink nil)
163 (button :label "Update functions" :var update-fns-button) :expand nil
164 (button :label "Redraw" :var redraw-button) :expand nil)
166 :resize t :shrink nil)
167 (container-add window v)
168 (connect-signal update-fns-button "clicked"
171 (update-fns window)))
172 (connect-signal redraw-button "clicked"
175 (widget-queue-draw (opengl-window-drawing-area window))))
176 (let ((area (opengl-window-drawing-area window)))
177 (setf (gl-drawing-area-on-expose area)
179 (declare (ignore w e))
180 (opengl-interactive-on-expose window))
181 (gl-drawing-area-on-resize area)
183 (declare (ignore widget))
184 (opengl-interactive-on-resize window w h))))))
186 (defun opengl-interactive-on-expose (window)
187 (if (opengl-window-expose-fn window)
189 (funcall (opengl-window-expose-fn window))
192 (setf (opengl-window-expose-fn window) nil)
193 (progn (gl:clear-color 0 0 0 0)
195 (gl:depth-func :less)
197 (gl:shade-model :smooth)
198 (gl:light-model :light-model-local-viewer 1)
199 (gl:color-material :front :ambient-and-diffuse)
200 (gl:enable :light0 :lighting :cull-face :depth-test)
202 (gl:translate 0 0 -5)
203 (gl:rotate *theta* 1 1 0)
204 (gl:light :light0 :position '(0 1 1 0))
205 (gl:light :light0 :diffuse '(0.2 0.4 0.6 0))
206 (gl:clear :color-buffer-bit :depth-buffer-bit)
209 (glut:solid-teapot 1.5)
212 (progn (gl:clear-color 0 0 0 0)
214 (gl:depth-func :less)
216 (gl:shade-model :smooth)
217 (gl:light-model :light-model-local-viewer 1)
218 (gl:color-material :front :ambient-and-diffuse)
219 (gl:enable :light0 :lighting :cull-face :depth-test)
221 (gl:translate 0 0 -5)
222 (gl:rotate *theta* 1 1 0)
223 (gl:light :light0 :position '(0 1 1 0))
224 (gl:light :light0 :diffuse '(0.2 0.4 0.6 0))
225 (gl:clear :color-buffer-bit :depth-buffer-bit)
228 (glut:solid-teapot 1.5)
232 (defun opengl-interactive-on-resize (window w h)
233 (if (opengl-window-resize-fn window)
235 (funcall (opengl-window-resize-fn window) w h)
238 (setf (opengl-window-resize-fn window) nil)
239 (gl:viewport 0 0 w h)
240 (gl:matrix-mode :projection)
242 (glu:perspective 60 (/ w h) 1 20)
243 (gl:matrix-mode :modelview)
246 (gl:viewport 0 0 w h)
247 (gl:matrix-mode :projection)
249 (glu:perspective 60 (/ w h) 1 20)
250 (gl:matrix-mode :modelview)
252 #+nil(glu:look-at 0 0 5 0 0 0 0 1 0)
255 (defpackage :cl-gtk2-gl-demo-read-package
256 (:use :cl :cl-opengl))
258 (defun read-exprs (string)
259 (with-input-from-string
261 (let ((eof (gensym)))
262 (iter (for expr = (read stream nil eof))
263 (until (eq expr eof))
266 (defun read-fn (string fn-args)
267 (let ((*package* (find-package :cl-gtk2-gl-demo-read-package)))
268 (let ((exprs (read-exprs string)))
270 (eval `(lambda (,@fn-args)
273 (defparameter *resize-fn-args* (list (intern "W" :cl-gtk2-gl-demo-read-package)
274 (intern "H" :cl-gtk2-gl-demo-read-package)))
276 (defun update-fns (window)
277 (with-gtk-message-error-handler
278 (let ((expose-fn (read-fn (text-buffer-text (text-view-buffer (opengl-window-expose-fn-text-view window))) nil))
279 (resize-fn (read-fn (text-buffer-text (text-view-buffer (opengl-window-resize-fn-text-view window)))
281 (assert (or (null expose-fn) (functionp expose-fn)))
282 (assert (or (null resize-fn) (functionp resize-fn)))
283 (setf (opengl-window-expose-fn window) expose-fn
284 (opengl-window-resize-fn window) resize-fn)
285 (widget-queue-draw (opengl-window-drawing-area window)))))
287 (defun opengl-interactive ()
288 (let ((output *standard-output*))
290 (setf *standard-output* output)
291 (let ((w (make-instance 'opengl-window)))