var.common.RectSelector Class Reference

Public Member Functions
def	__init__ (self, win, callback)
def	onmouse (self, event, x, y, flags, param)
def	draw (self, vis)
def	dragging (self)

Public Attributes
	win
	callback
	drag_start
	drag_rect

Detailed Description

Definition at line 197 of file common.py.

Constructor & Destructor Documentation

__init__()

def var.common.RectSelector.__init__	(		self,
			win,
			callback
	)

Definition at line 198 of file common.py.

    def __init__(self, win, callback):
        self.win = win
        self.callback = callback
        cv.setMouseCallback(win, self.onmouse)
        self.drag_start = None
        self.drag_rect = None

Member Function Documentation

dragging()

def var.common.RectSelector.dragging

(

self

)

Definition at line 230 of file common.py.

    def dragging(self):
        return self.drag_rect is not None
 
 

draw()

def var.common.RectSelector.draw	(		self,
			vis
	)

Definition at line 223 of file common.py.

    def draw(self, vis):
        if not self.drag_rect:
            return False
        x0, y0, x1, y1 = self.drag_rect
        cv.rectangle(vis, (x0, y0), (x1, y1), (0, 255, 0), 2)
        return True

onmouse()

def var.common.RectSelector.onmouse	(		self,
			event,
			x,
			y,
			flags,
			param
	)

Definition at line 204 of file common.py.

    def onmouse(self, event, x, y, flags, param):
        x, y = np.int16([x, y]) # BUG
        if event == cv.EVENT_LBUTTONDOWN:
            self.drag_start = (x, y)
            return
        if self.drag_start:
            if flags & cv.EVENT_FLAG_LBUTTON:
                xo, yo = self.drag_start
                x0, y0 = np.minimum([xo, yo], [x, y])
                x1, y1 = np.maximum([xo, yo], [x, y])
                self.drag_rect = None
                if x1-x0 > 0 and y1-y0 > 0:
                    self.drag_rect = (x0, y0, x1, y1)
            else:
                rect = self.drag_rect
                self.drag_start = None
                self.drag_rect = None
                if rect:
                    self.callback(rect)

Member Data Documentation

callback

var.common.RectSelector.callback

Definition at line 200 of file common.py.

drag_rect

var.common.RectSelector.drag_rect

Definition at line 203 of file common.py.

drag_start

var.common.RectSelector.drag_start

Definition at line 202 of file common.py.

win

var.common.RectSelector.win

Definition at line 199 of file common.py.

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The documentation for this class was generated from the following file:

• repos_for_Dox/cFp_Zoo/HOST/vision/common/languages/python/var/common.py