Function that draws a trapezoid.
@version=4
// ||─────────────────────────────────────────────────────────────────────────||
// || Draw a Trapezoid with 4 vector2D(x, y) coordinates:
// ||─────────────────────────────────────────────────────────────────────────||
// |{─────────────────────────────────────────────────────────────────────────||
// || Parameters:
// || _x1, _y1 (series ) : 1st vector2D(x, y) coordinates.
// || _x2, _y2 (series ) : 2nd vector2D(x, y) coordinates.
// || _x3, _y3 (series ) : 3rd vector2D(x, y) coordinates.
// || _x4, _y4 (series ) : 4th vector2D(x, y) coordinates.
// || _xloc (string ) : options: xloc.bar_index and xloc.bar_time.
// || _extend (string ) : options: extend.none, extend.right, extend.left, extend.both
// || _color (color ) : color code ex:. #000000, color.black, color.new(#000000, 40)
// || _style (string ) : options: : line.style_solid, line.style_dotted, line.style_dashed, line.style_arrow_left, line.style_arrow_right, line.style_arrow_both
// || _width (integer) : width in pixels.
f_line_trapezoid(_x1, _y1, _x2, _y2, _x3, _y3, _x4, _y4, _xloc, _extend, _color, _style, _width)=>
// (x2,y2) Side2 (x3, y3)
// ┌───────┐
// │ │
// Side1 │ │ Side3
// │ │
// └───────┘
// (x1,y1) Side4 (x4, y4)
var line _side1 = na
var line _side2 = na
var line _side3 = na
var line _side4 = na
// clear previous lines:
line.delete(_side1)
line.delete(_side2)
line.delete(_side3)
line.delete(_side4)
// draw the lines:
_side1 := line.new(
x1 = _x1, y1 = _y1,
x2 = _x2, y2 = _y2,
xloc = _xloc, extend = _extend,
color = _color, style = _style, width = _width
)
_side2 := line.new(
x1 = _x2, y1 = _y2,
x2 = _x3, y2 = _y3,
xloc = _xloc, extend = _extend,
color = _color, style = _style, width = _width
)
_side3 := line.new(
x1 = _x3, y1 = _y3,
x2 = _x4, y2 = _y4,
xloc = _xloc, extend = _extend,
color = _color, style = _style, width = _width
)
_side4 := line.new(
x1 = _x4, y1 = _y4,
x2 = _x1, y2 = _y1,
xloc = _xloc, extend = _extend,
color = _color, style = _style, width = _width
)
// ||─────────────────────────────────────────────────────────────────────────||Draws a trapezoid on chart.
Example Code
//@version=4
study(title="[RS]Function - Geometric Line Drawings")
// ||─────────────────────────────────────────────────────────────────────────||
// || Draw a Trapezoid with 4 vector2D(x, y) coordinates:
// ||─────────────────────────────────────────────────────────────────────────||
// |{─────────────────────────────────────────────────────────────────────────||
// || Parameters:
// || _x1, _y1 (series ) : 1st vector2D(x, y) coordinates.
// || _x2, _y2 (series ) : 2nd vector2D(x, y) coordinates.
// || _x3, _y3 (series ) : 3rd vector2D(x, y) coordinates.
// || _x4, _y4 (series ) : 4th vector2D(x, y) coordinates.
// || _xloc (string ) : options: xloc.bar_index and xloc.bar_time.
// || _extend (string ) : options: extend.none, extend.right, extend.left, extend.both
// || _color (color ) : color code ex:. #000000, color.black, color.new(#000000, 40)
// || _style (string ) : options: : line.style_solid, line.style_dotted, line.style_dashed, line.style_arrow_left, line.style_arrow_right, line.style_arrow_both
// || _width (integer) : width in pixels.
f_line_trapezoid(_x1, _y1, _x2, _y2, _x3, _y3, _x4, _y4, _xloc, _extend, _color, _style, _width)=>
// (x2,y2) Side2 (x3, y3)
// ┌───────┐
// │ │
// Side1 │ │ Side3
// │ │
// └───────┘
// (x1,y1) Side4 (x4, y4)
var line _side1 = na
var line _side2 = na
var line _side3 = na
var line _side4 = na
// clear previous lines:
line.delete(_side1)
line.delete(_side2)
line.delete(_side3)
line.delete(_side4)
// draw the lines:
_side1 := line.new(
x1 = _x1, y1 = _y1,
x2 = _x2, y2 = _y2,
xloc = _xloc, extend = _extend,
color = _color, style = _style, width = _width
)
_side2 := line.new(
x1 = _x2, y1 = _y2,
x2 = _x3, y2 = _y3,
xloc = _xloc, extend = _extend,
color = _color, style = _style, width = _width
)
_side3 := line.new(
x1 = _x3, y1 = _y3,
x2 = _x4, y2 = _y4,
xloc = _xloc, extend = _extend,
color = _color, style = _style, width = _width
)
_side4 := line.new(
x1 = _x4, y1 = _y4,
x2 = _x1, y2 = _y1,
xloc = _xloc, extend = _extend,
color = _color, style = _style, width = _width
)
// ||─────────────────────────────────────────────────────────────────────────||
// || Example:
show_trapezoid = input(true)
trapezoid_x1 = input(defval=15)
trapezoid_y1 = input(defval=4.0)
trapezoid_x2 = input(defval=10)
trapezoid_y2 = input(defval=25.0)
trapezoid_x3 = input(defval=5)
trapezoid_y3 = input(defval=20.0)
trapezoid_x4 = input(defval=2)
trapezoid_y4 = input(defval=2.0)
trapezoid_xloc = input(defval=xloc.bar_index, options=[xloc.bar_index, xloc.bar_time])
trapezoid_xtend = input(defval=extend.none, options=[extend.none, extend.right, extend.left, extend.both])
trapezoid_style = input(defval=line.style_dashed, options=[line.style_solid, line.style_dotted, line.style_dashed, line.style_arrow_left, line.style_arrow_right, line.style_arrow_both])
trapezoid_width = input(2, minval=0)
if show_trapezoid and barstate.islast and barstate.ishistory[1]
_adjust_x1 = rect_xloc == xloc.bar_index ? bar_index - trapezoid_x1 : timenow + trapezoid_x1 * 60000
_adjust_x2 = rect_xloc == xloc.bar_index ? bar_index - trapezoid_x2 : timenow + trapezoid_x2 * 60000
_adjust_x3 = rect_xloc == xloc.bar_index ? bar_index - trapezoid_x3 : timenow + trapezoid_x3 * 60000
_adjust_x4 = rect_xloc == xloc.bar_index ? bar_index - trapezoid_x4 : timenow + trapezoid_x4 * 60000
f_line_trapezoid(
_adjust_x1, trapezoid_y1,
_adjust_x2, trapezoid_y2,
_adjust_x3, trapezoid_y3,
_adjust_x4, trapezoid_y4,
trapezoid_xloc, trapezoid_xtend,
color.new(#ff5500, 50), trapezoid_style, trapezoid_width
)
// || |}─────────────────────────────────────────────────────────────────────||