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Diffstat (limited to 'examples/gl/gears.py')
| -rw-r--r-- | examples/gl/gears.py | 290 |
1 files changed, 0 insertions, 290 deletions
diff --git a/examples/gl/gears.py b/examples/gl/gears.py deleted file mode 100644 index 43ddcef2..00000000 --- a/examples/gl/gears.py +++ /dev/null @@ -1,290 +0,0 @@ -#!/usr/bin/env python - -# A translation of the gears demo that comes with mesa, modified to use -# a few GtkHScale widgets for the rotation, rather than the keyboard. - -from OpenGL.GL import * -import gobject -import gtk -import gtk.gl - -import math - -# Draw a gear wheel. You'll probably want to call this function when -# building a display list since we do a lot of trig here. -# -# Input: inner_radius - radius of hole at center -# outer_radius - radius at center of teeth -# width - width of gear -# teeth - number of teeth -# tooth_depth - depth of tooth -def gear(inner_radius, outer_radius, width, teeth, tooth_depth): - cos = math.cos - sin = math.sin - - r0 = inner_radius - r1 = outer_radius - tooth_depth/2.0 - r2 = outer_radius + tooth_depth/2.0 - - da = 2.0*math.pi / teeth / 4.0 - - glShadeModel( GL_FLAT ) - - glNormal3f( 0.0, 0.0, 1.0 ) - - # draw front face - glBegin( GL_QUAD_STRIP ) - for i in range(teeth + 1): - angle = i * 2.0*math.pi / teeth - glVertex3f( r0*cos(angle), r0*sin(angle), width*0.5 ) - glVertex3f( r1*cos(angle), r1*sin(angle), width*0.5 ) - glVertex3f( r0*cos(angle), r0*sin(angle), width*0.5 ) - glVertex3f( r1*cos(angle+3*da), r1*sin(angle+3*da), width*0.5 ) - glEnd(); - - # draw front sides of teeth - glBegin( GL_QUADS ) - da = 2.0*math.pi / teeth / 4.0 - for i in range(teeth): - angle = i * 2.0*math.pi / teeth - glVertex3f( r1*cos(angle), r1*sin(angle), width*0.5 ) - glVertex3f( r2*cos(angle+da), r2*sin(angle+da), width*0.5 ) - glVertex3f( r2*cos(angle+2*da), r2*sin(angle+2*da), width*0.5 ) - glVertex3f( r1*cos(angle+3*da), r1*sin(angle+3*da), width*0.5 ) - glEnd() - - - glNormal3f( 0.0, 0.0, -1.0 ) - - # draw back face - glBegin( GL_QUAD_STRIP ) - for i in range(teeth + 1): - angle = i * 2.0*math.pi / teeth - glVertex3f( r1*cos(angle), r1*sin(angle), -width*0.5 ) - glVertex3f( r0*cos(angle), r0*sin(angle), -width*0.5 ) - glVertex3f( r1*cos(angle+3*da), r1*sin(angle+3*da),-width*0.5 ) - glVertex3f( r0*cos(angle), r0*sin(angle), -width*0.5 ) - glEnd() - - # draw back sides of teeth - glBegin( GL_QUADS ) - da = 2.0*math.pi / teeth / 4.0 - for i in range(teeth): - angle = i * 2.0*math.pi / teeth - - glVertex3f( r1*cos(angle+3*da), r1*sin(angle+3*da),-width*0.5 ) - glVertex3f( r2*cos(angle+2*da), r2*sin(angle+2*da),-width*0.5 ) - glVertex3f( r2*cos(angle+da), r2*sin(angle+da), -width*0.5 ) - glVertex3f( r1*cos(angle), r1*sin(angle), -width*0.5 ) - glEnd() - - - # draw outward faces of teeth - glBegin( GL_QUAD_STRIP ); - for i in range(teeth): - angle = i * 2.0*math.pi / teeth - - glVertex3f( r1*cos(angle), r1*sin(angle), width*0.5 ) - glVertex3f( r1*cos(angle), r1*sin(angle), -width*0.5 ) - u = r2*cos(angle+da) - r1*cos(angle) - v = r2*sin(angle+da) - r1*sin(angle) - len = math.sqrt( u*u + v*v ) - u = u / len - v = v / len - glNormal3f( v, -u, 0.0 ) - glVertex3f( r2*cos(angle+da), r2*sin(angle+da), width*0.5 ) - glVertex3f( r2*cos(angle+da), r2*sin(angle+da), -width*0.5 ) - glNormal3f( cos(angle), sin(angle), 0.0 ) - glVertex3f( r2*cos(angle+2*da), r2*sin(angle+2*da), width*0.5 ) - glVertex3f( r2*cos(angle+2*da), r2*sin(angle+2*da),-width*0.5 ) - u = r1*cos(angle+3*da) - r2*cos(angle+2*da) - v = r1*sin(angle+3*da) - r2*sin(angle+2*da) - glNormal3f( v, -u, 0.0 ) - glVertex3f( r1*cos(angle+3*da), r1*sin(angle+3*da), width*0.5 ) - glVertex3f( r1*cos(angle+3*da), r1*sin(angle+3*da),-width*0.5 ) - glNormal3f( cos(angle), sin(angle), 0.0 ) - - glVertex3f( r1*cos(0), r1*sin(0), width*0.5 ) - glVertex3f( r1*cos(0), r1*sin(0), -width*0.5 ) - - glEnd() - - - glShadeModel( GL_SMOOTH ) - - # draw inside radius cylinder - glBegin( GL_QUAD_STRIP ) - for i in range(teeth + 1): - angle = i * 2.0*math.pi / teeth; - glNormal3f( -cos(angle), -sin(angle), 0.0 ) - glVertex3f( r0*cos(angle), r0*sin(angle), -width*0.5 ) - glVertex3f( r0*cos(angle), r0*sin(angle), width*0.5 ) - glEnd() - -view_rotx=20.0 -view_roty=30.0 -view_rotz=0.0 - -gear1 = 0 -gear2 = 0 -gear3 = 0 - -angle = 0.0 - -def xchange(adj): - global view_rotx - view_rotx = adj.value - draw(glarea) -def ychange(adj): - global view_roty - view_roty = adj.value - draw(glarea) -def zchange(adj): - global view_rotz - view_rotz = adj.value - draw(glarea) - -def draw(glarea, event=None): - if not glarea.make_current(): return - - glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ) - - glPushMatrix() - glRotatef( view_rotx, 1.0, 0.0, 0.0 ) - glRotatef( view_roty, 0.0, 1.0, 0.0 ) - glRotatef( view_rotz, 0.0, 0.0, 1.0 ) - - glPushMatrix() - glTranslatef( -3.0, -2.0, 0.0 ) - glRotatef( angle, 0.0, 0.0, 1.0 ) - glCallList(gear1) - glPopMatrix() - - glPushMatrix() - glTranslatef( 3.1, -2.0, 0.0 ) - glRotatef( -2.0*angle-9.0, 0.0, 0.0, 1.0 ) - glCallList(gear2) - glPopMatrix() - - glPushMatrix() - glTranslatef( -3.1, 4.2, 0.0 ) - glRotatef( -2.0*angle-25.0, 0.0, 0.0, 1.0 ) - glCallList(gear3) - glPopMatrix() - - glPopMatrix() - - glarea.swap_buffers() - -def idle(): - global angle - angle = angle + 2.0 - - draw(glarea) - - return gtk.TRUE - -def reshape_idle(): - if not glarea.make_current(): return - x, y, width, height = glarea.get_allocation() - - glViewport(0, 0, width, height) - glMatrixMode(GL_PROJECTION) - glLoadIdentity() - if width > height: - w = width / height - glFrustum( -w, w, -1.0, 1.0, 5.0, 60.0 ) - else: - h = height / width - glFrustum( -1.0, 1.0, -h, h, 5.0, 60.0 ) - - glMatrixMode(GL_MODELVIEW) - glLoadIdentity() - glTranslatef( 0.0, 0.0, -40.0 ) - glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ) - - return gtk.FALSE - -def reshape(glarea, allocation): - gtk.idle_add(reshape_idle) - -def init(glarea): - if not glarea.make_current(): return - - global gear1, gear2, gear3 - - pos = (5.0, 5.0, 10.0, 0.0 ) - red = (0.8, 0.1, 0.0, 1.0 ) - green = (0.0, 0.8, 0.2, 1.0 ) - blue = (0.2, 0.2, 1.0, 1.0 ) - - glLightfv( GL_LIGHT0, GL_POSITION, pos ) - glEnable( GL_CULL_FACE ) - glEnable( GL_LIGHTING ) - glEnable( GL_LIGHT0 ) - glEnable( GL_DEPTH_TEST ) - - # make the gears - gear1 = glGenLists(1) - glNewList(gear1, GL_COMPILE) - glMaterialfv( GL_FRONT, GL_AMBIENT_AND_DIFFUSE, red ) - gear( 1.0, 4.0, 1.0, 20, 0.7 ) - glEndList() - - gear2 = glGenLists(1) - glNewList(gear2, GL_COMPILE) - glMaterialfv( GL_FRONT, GL_AMBIENT_AND_DIFFUSE, green ) - gear( 0.5, 2.0, 2.0, 10, 0.7 ) - glEndList() - - gear3 = glGenLists(1) - glNewList(gear3, GL_COMPILE) - glMaterialfv( GL_FRONT, GL_AMBIENT_AND_DIFFUSE, blue ) - gear( 1.3, 2.0, 0.5, 10, 0.7 ) - glEndList() - - glEnable( GL_NORMALIZE ) - -#if not gtkgl.query(): -# print "OpenGL not supported. Bye." -# raise SystemExit - -win = gobject.new(gtk.Window, - title='Gears') -win.connect("destroy", gtk.mainquit) - -table = gtk.Table(4, 2) -win.add(table) -table.show() - -glarea = gtk.gl.Area((gtk.gl.RGBA, gtk.gl.DEPTH_SIZE, 1, gtk.gl.DOUBLEBUFFER)) -glarea.set_size_request(300, 300) - -glarea.connect("realize", init) -glarea.connect("size_allocate", reshape) -glarea.connect("expose_event", draw) - -gtk.idle_add(idle) - -table.attach(glarea, 0,2, 0,1) -glarea.show() - -for row, label, start, cb in ((1,'X Rotation', view_rotx, xchange), - (2,'Y Rotation', view_roty, ychange), - (3,'Z Rotation', view_rotz, zchange)): - l = gtk.Label(label) - table.attach(l, 0,1, row,row+1, xoptions=0, yoptions=gtk.FILL) - l.show() - - adj = gtk.Adjustment(start, 0, 360, 5, 5, 0) - adj.connect("value_changed", cb) - - scale = gtk.HScale(adj) - table.attach(scale, 1,2, row,row+1, yoptions=gtk.FILL) - scale.show() - -win.show() - -gtk.mainloop() - -#glarea.destroy() |