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 (pushnew :key-press-mask (gdk:gdk-window-events (widget-window window)))
75 (connect-signal window "key-press-event"
79 (let ((c (aref (gdk:event-key-string e) 0)))
81 (#\d (incf *d* 10) (widget-queue-draw area))
82 (#\D (incf *d* -10) (widget-queue-draw area))
83 (#\y (incf *y* 5) (widget-queue-draw area))
84 (#\Y (incf *y* -5) (widget-queue-draw area)))))
86 (let ((timer-id (gtk-main-add-timeout 10 (lambda ()
87 (incf *d* 1) (incf *y* 0.5)
88 (widget-queue-draw area)
90 (connect-signal window "delete-event" (lambda (w e)
91 (declare (ignore w e))
92 (g-source-remove timer-id)
94 (widget-show window))))
96 (defun planet-draw (w e)
97 (declare (ignore w e))
98 (gl:clear-color 0 0 0 0)
99 (gl:shade-model :flat)
100 (gl:clear :color-buffer)
102 (gl:with-pushed-matrix
104 (gl:translate 0 0 -2)
106 (glut:wire-sphere 1 20 16)
107 ;; draw smaller planet
108 (gl:rotate *y* 0 1 0)
110 (gl:rotate *d* 0 1 0)
111 (glut:wire-sphere 0.2 10 8))
114 (defun planet-resize (w width height)
116 (gl:viewport 0 0 width height)
117 (gl:matrix-mode :projection)
119 (glu:perspective 60 (/ width height) 1 20)
120 (gl:matrix-mode :modelview)
122 (glu:look-at 0 0 5 0 0 0 0 1 0))
124 (defclass opengl-window (gtk-window)
125 ((expose-fn-text-view :initform (make-instance 'text-view) :reader opengl-window-expose-fn-text-view)
126 (resize-fn-text-view :initform (make-instance 'text-view) :reader opengl-window-resize-fn-text-view)
127 (expose-fn :initform nil :accessor opengl-window-expose-fn)
128 (resize-fn :initform nil :accessor opengl-window-resize-fn)
129 (drawing-area :initform (make-instance 'gl-drawing-area :height-request 100) :reader opengl-window-drawing-area))
130 (:metaclass gobject-class)
132 :title "Lisp interactive OpenGL"
135 :window-position :center))
137 (defmethod initialize-instance :after ((window opengl-window) &key &allow-other-keys)
138 (setf (text-buffer-text (text-view-buffer (opengl-window-expose-fn-text-view window)))
141 (text-buffer-text (text-view-buffer (opengl-window-resize-fn-text-view window)))
142 ";; Resize-fn. Parameters: w h
144 (let-ui (v-paned :var v
145 (:expr (opengl-window-drawing-area window))
146 :resize t :shrink nil
150 :hscrollbar-policy :automatic
151 :vscrollbar-policy :automatic
152 (:expr (opengl-window-expose-fn-text-view window)))
153 :resize t :shrink nil
155 :hscrollbar-policy :automatic
156 :vscrollbar-policy :automatic
157 (:expr (opengl-window-resize-fn-text-view window)))
158 :resize t :shrink nil)
160 (button :label "Update functions" :var update-fns-button) :expand nil
161 (button :label "Redraw" :var redraw-button) :expand nil)
163 :resize t :shrink nil)
164 (container-add window v)
165 (connect-signal update-fns-button "clicked"
168 (update-fns window)))
169 (connect-signal redraw-button "clicked"
172 (widget-queue-draw (opengl-window-drawing-area window))))
173 (let ((area (opengl-window-drawing-area window)))
174 (setf (gl-drawing-area-on-expose area)
176 (declare (ignore w e))
177 (opengl-interactive-on-expose window))
178 (gl-drawing-area-on-resize area)
180 (declare (ignore widget))
181 (opengl-interactive-on-resize window w h))))))
183 (defun opengl-interactive-on-expose (window)
184 (if (opengl-window-expose-fn window)
186 (funcall (opengl-window-expose-fn window))
189 (setf (opengl-window-expose-fn window) nil)
190 (progn (gl:clear-color 0 0 0 0)
192 (gl:depth-func :less)
194 (gl:shade-model :smooth)
195 (gl:light-model :light-model-local-viewer 1)
196 (gl:color-material :front :ambient-and-diffuse)
197 (gl:enable :light0 :lighting :cull-face :depth-test)
199 (gl:translate 0 0 -5)
200 (gl:rotate *theta* 1 1 0)
201 (gl:light :light0 :position '(0 1 1 0))
202 (gl:light :light0 :diffuse '(0.2 0.4 0.6 0))
203 (gl:clear :color-buffer-bit :depth-buffer-bit)
206 (glut:solid-teapot 1.5)
209 (progn (gl:clear-color 0 0 0 0)
211 (gl:depth-func :less)
213 (gl:shade-model :smooth)
214 (gl:light-model :light-model-local-viewer 1)
215 (gl:color-material :front :ambient-and-diffuse)
216 (gl:enable :light0 :lighting :cull-face :depth-test)
218 (gl:translate 0 0 -5)
219 (gl:rotate *theta* 1 1 0)
220 (gl:light :light0 :position '(0 1 1 0))
221 (gl:light :light0 :diffuse '(0.2 0.4 0.6 0))
222 (gl:clear :color-buffer-bit :depth-buffer-bit)
225 (glut:solid-teapot 1.5)
229 (defun opengl-interactive-on-resize (window w h)
230 (if (opengl-window-resize-fn window)
232 (funcall (opengl-window-resize-fn window) w h)
235 (setf (opengl-window-resize-fn window) nil)
236 (gl:viewport 0 0 w h)
237 (gl:matrix-mode :projection)
239 (glu:perspective 60 (/ w h) 1 20)
240 (gl:matrix-mode :modelview)
243 (gl:viewport 0 0 w h)
244 (gl:matrix-mode :projection)
246 (glu:perspective 60 (/ w h) 1 20)
247 (gl:matrix-mode :modelview)
249 #+nil(glu:look-at 0 0 5 0 0 0 0 1 0)
252 (defpackage :cl-gtk2-gl-demo-read-package
253 (:use :cl :cl-opengl))
255 (defun read-exprs (string)
256 (with-input-from-string
258 (let ((eof (gensym)))
259 (iter (for expr = (read stream nil eof))
260 (until (eq expr eof))
263 (defun read-fn (string fn-args)
264 (let ((*package* (find-package :cl-gtk2-gl-demo-read-package)))
265 (let ((exprs (read-exprs string)))
267 (eval `(lambda (,@fn-args)
270 (defparameter *resize-fn-args* (list (intern "W" :cl-gtk2-gl-demo-read-package)
271 (intern "H" :cl-gtk2-gl-demo-read-package)))
273 (defun update-fns (window)
274 (with-gtk-message-error-handler
275 (let ((expose-fn (read-fn (text-buffer-text (text-view-buffer (opengl-window-expose-fn-text-view window))) nil))
276 (resize-fn (read-fn (text-buffer-text (text-view-buffer (opengl-window-resize-fn-text-view window)))
278 (assert (or (null expose-fn) (functionp expose-fn)))
279 (assert (or (null resize-fn) (functionp resize-fn)))
280 (setf (opengl-window-expose-fn window) expose-fn
281 (opengl-window-resize-fn window) resize-fn)
282 (widget-queue-draw (opengl-window-drawing-area window)))))
284 (defun opengl-interactive ()
285 (let ((output *standard-output*))
287 (setf *standard-output* output)
288 (let ((w (make-instance 'opengl-window)))