User Guide

Lingo Dictionary 201
drag
Syntax
member(whichCastmember).modelResource(whichModelResource).drag
Description
3D #particle model resource property; indicates the percentage of each particle’s velocity that is
lost in each simulation step. This property has a range of 0 (no velocity lost) to 100 (all velocity
lost and the particle stops moving). The default value is 0.
Example
In this example, ThermoSystem is a model resource whose type is #particle. This statement sets
the
drag property of ThermoSystem to 5, applying a large resistance to the motion of the
particles of ThermoSystem and preventing them from traveling very far.
member("Fires").modelResource("ThermoSystem").drag = 5
See also
wind, gravity
draw()
Syntax
imageObject.draw(x1, y1, x2, y2, colorObjectOrParameterList)
imageObject.draw(point(x, y), point(x, y), colorObjectOrParameterList)
imageObject.draw(rect, colorObjectOrParameterList)
Description
This function draws a line or an unfilled shape of color colorObject in a rectangular region of
the given image object, as specified in any of the three ways shown. The draw returns a value of 1
if there is no error. You can use the optional property list
ParameterList function to specify the
following shape properties:
If you do not provide a parameter list, this function draws a 1-pixel line between the first and
second points given or between the upper left and lower right corners of the given rectangle.
For best performance, with 8-bit or lower images the
colorObject should contain an indexed
color value. For 16- or 32-bit images, use an RGB color value.
If you want to fill a solid region, use the
fill() function.
Examples
This statement draws a 1-pixel, dark red, diagonal line from point (0, 0) to point (128, 86) within
the image of member Happy.
member("Happy").image.draw(0, 0, 128, 86, rgb(150,0,0))
Property Description
#shapeType A symbol value of #oval, #rect, #roundRect, or #line. The default is #line.
#lineSize The width of the line to use in drawing the shape.
#color A color object, which determines the color of the shape border.