Beispiel #1
0
def rectangle(x0, y0, dx, dy, sld=0.0, sldi=0.0):
    #generate points for a rectangle
    rect = Shape('rectangle')
    rect.points = [[x0,y0], [x0+dx, y0], [x0+dx, y0+dy], [x0, y0+dy]]
    rect.sld = sld
    rect.sldi = sldi
    return rect
Beispiel #2
0
def rectangle(x0, y0, dx, dy, sld=0.0, sldi=0.0):
    #generate points for a rectangle
    rect = Shape('rectangle')
    rect.points = [[x0, y0], [x0 + dx, y0], [x0 + dx, y0 + dy], [x0, y0 + dy]]
    rect.sld = sld
    rect.sldi = sldi
    return rect
Beispiel #3
0
def arc(r, theta_start, theta_end, x_center, y_center, theta_step=1.0, close=True, sld=0.0, sldi=0.0, ):
    a = Shape(name='arc')
    a.theta_start = theta_start
    a.theta_end = theta_end
    a.area = pi * r**2 * abs(theta_end - theta_start)/360.0
    if close == True:
        a.points.append([x_center, y_center]) # center point
    numpoints = (theta_end - theta_start) / theta_step + 1
    thetas = linspace(theta_start, theta_end, numpoints) * pi/180 # to radians
    for th in thetas:
        a.points.append([r*cos(th) + x_center, r*sin(th) + y_center])
    a.sld = sld
    a.sldi = sldi
    return a
Beispiel #4
0
def limit_cyl(arc, xmin=0.0, xmax=0.0, ymin=0.0, ymax=0.0):
    new_arc = Shape(name='arc')
    new_arc.sld = arc.sld
    new_arc.sldi = arc.sldi
    new_arc.theta_start = arc.theta_start
    new_arc.theta_end = arc.theta_end
    #new_arc.area = arc.area
    
    for point in arc.points:
        if (point[0] >= xmin) and (point[0] <= xmax) and (point[1] >=ymin) and (point[1] <= ymax):
            new_arc.points.append(point)
    
    if len(new_arc.points) < 3:
        new_arc.area = 0.0
    else:
        new_arc.area = (len(new_arc.points) - 2) / 360.0 * arc.area
    
    return new_arc