Variables
ARROW_SHAPE_NAME
ARROW_SHAPE_NAME: "arrow" = 'arrow'
ELLIPSE_SHAPE_NAME
ELLIPSE_SHAPE_NAME: "ellipse" = 'ellipse'
FREE_LINE_SHAPE_NAME
FREE_LINE_SHAPE_NAME: "freeLine" = 'freeLine'
LASER_PEN_SHAPE_NAME
LASER_PEN_SHAPE_NAME: "laserPen" = 'laserPen'
POLYGON_SHAPE_NAME
POLYGON_SHAPE_NAME: "polygon" = 'polygon'
RECT_SHAPE_NAME
RECT_SHAPE_NAME: "rect" = 'rect'
STAR_SHAPE_NAME
STAR_SHAPE_NAME: "star" = 'star'
STRAIGHT_LINE_SHAPE_NAME
STRAIGHT_LINE_SHAPE_NAME: "straightLine" = 'straightLine'
TEXT_SHAPE_NAME
TEXT_SHAPE_NAME: "text" = 'text'
TRIANGLE_SHAPE_NAME
TRIANGLE_SHAPE_NAME: "triangle" = 'triangle'
箭头图形开始端类型,tapering - 尖端型,rightAngle - 直角型