diff options
| -rwxr-xr-x | colors.py | 24 |
1 files changed, 18 insertions, 6 deletions
@@ -1474,7 +1474,9 @@ class Colors(activity.Activity, ExportedGObject): # Update drawing. if self.cur_buttons & Colors.BUTTON_TOUCH: - if self.mx != self.lastmx or self.my != self.lastmy: + if self.mx != self.lastmx or self.my != self.lastmy or self.videopaint_enabled: + # if self.videopaint_enabled: + # print "got here" self.draw(Pos(self.mx, self.my)) self.flush_dirty_canvas() @@ -1673,8 +1675,11 @@ class Colors(activity.Activity, ExportedGObject): self.videopaint_enabled = button.get_active() if button.get_active(): self.cam.start() + # flips the image to start with self.cam.set_controls(hflip = 1) gobject.timeout_add(33, self.on_videopaint_tick) + else: + self.cam.stop() #def on_videopaint (self, button): @@ -1718,24 +1723,31 @@ class Colors(activity.Activity, ExportedGObject): def on_videopaint_tick (self): if not self.videopaint_enabled: return False + # by using query_image, we avoid tieing the framerate to the camera if self.cam.query_image(): + # get the new frame self.camcapture = self.cam.get_image(self.camcapture) + # scale it to a quarter the size before colorspace conversion self.camsmall = transform.scale(self.camcapture,(160,120),self.camsmall) + # convert colorspace to HSV, good for object tracking self.camhsv = camera.colorspace(self.camsmall,"HSV",self.camhsv) + # currently just threshold the OLPC green color. cammask = mask.from_threshold(self.camhsv,(90,128,128),(50,120,120)) + # find the largest object in the mask camcomponent = cammask.connected_component() camcount = camcomponent.count() - print camcount + # make sure its not just noise if camcount > 1500: - campos = camcomponent.centroid() size = self.window.get_size() - self.mx = int(25+max(0.0, min(1.0, campos[0]/160.0))*(size[0]-50)) - self.my = int(25+max(0.0, min(1.0, campos[1]/120.0))*(size[1]-50)) + self.lastmx = self.mx + self.lastmy = self.my + # scale and adjust it so the borders can still be reached + self.mx = int(25+max(0.0, min(1.0, (campos[0]*1.2-16)/160.0))*(size[0]-50)) + self.my = int(25+max(0.0, min(1.0, (campos[1]*1.2-12)/120.0))*(size[1]-50)) gtk.gdk.display_get_default().warp_pointer(self.get_screen(), self.mx, self.my) self.flush_cursor() self.update() - # return True |