# is a comment except within a string.#preco on the first line of the file, type identification will be performed when pasted via the clipboard, etc. (planned).Numbers are integers or real numbers, and the decimal point is . (period).
Integers can also be expressed in hexadecimal (mainly used for colors). Hexadecimal notation starts with 0x. x and a through f are case insensitive (e.g. 0xffaa1234 or 0XCC1234AA).
Colors are 32-bit and the order is ARGB.
The unit of angle is degrees, and counterclockwise is positive. However, the font slant is clockwise.
" (double quotes).\n. For example,"The Martians are
coming!"
becomes The Martians are coming!. If you need a line break, use The Martians are\n coming!.
" in the string, use \". If you need a \ in the string, use \\.bylayer used in line type, construction used in line type, color name, etc.). Parameters are separated by at least one whitespace character (space, tab).However, if the parameter is a string, the delimiter can be omitted (not recommended as it is difficult to read).
text"abcdefg"100 10#This line is OK, but not recommended. It's easier to read if there are spaces.
& at the end of the line (& should be written in the same notation as the parameters).line 0 0 10 10 20 20
#This cannot be written as follows.
line 0 0 10 10 20&
20
#Do as follows.
line 0 0 10 10 20 &
20
Example
#preco
line 0 0 100 0 100 -50 # lines (0,0)-(100,0)-(100,-50)
lc red # Line color is red.
# Indent is OK.
circle 0 0 100 # circle center=(0,0) radius=100
text "The Martians are coming!" 100 100 0
If the line starts with a number, the numbers after that are treated as coordinates and a line is drawn.
XY coordinates are separated by whitespace (space or tab). It is also possible to write multiple XY coordinates on one line.
A continuous line is drawn with one segment until there is a line other than numbers, including a blank line.
The following example draws two squares (and a circle) with side lengths of 40 and 80.
This is fine if you only have lines, but if you have other shapes, we recommend using the line or polyline commands.
-20 -20
20 -20
20 20
-20 20
-20 -20
-40 -40 40 -40 40 40 -40 40
-40 -40
circle 0 0 50
A command line begins with a command, followed by parameters.
Some parameters can be omitted. If a parameter is omitted, it may have a special meaning or a default value may be used. Parameters are separated by spaces, so you cannot omit only a parameter in the middle of a set of multiple parameters.
Parameters in this specification follow the following notation:
[].=.In the example below, x, y, and radius cannot be omitted, but if angle is omitted, angle=0.0, and if flatness is also omitted, flatness=1.0, angle=0.0.
circle x y radius [flatness=1.0] [angle=0.0]
Also, in the example below, x and y cannot be omitted alone, but the pair of x and y can be omitted.
p0 [x y]
Color, line type, and line width of shapes.
Currently selected color, line type, and line width on the PreCad toolbar.
Color is called current line color, current text color, current fill color, etc., depending on the element.It is sometimes simply called the current value.
The same applies to fonts, such as the current font name.
The layer selected in the PreCad layer list for writing.
The size displayed on the paper is the paper size, and the actual size is the size divided by the scale.
Line width is always written in paper size.
ps f
When f is 0, the coordinates and length are actual size, and when f is 1, the paper size. The initial value is 0 (actual size).
Do not use during grouping.
p0 [x y]
Sets the coordinates specified with the mouse to (x, y).
This is the same as offsetting the coordinates by (-X, -Y). The coordinate values set are affected by the ps command.
The initial value is (0, 0).
If no parameters are used, it returns to the initial value (0, 0).
Do not use during grouping.
Please note that the value of the p0 command is added (you probably won't use multiple commands).
p0 100 50
line 100 50 200 50 # Draw a line 100 to the right from the mouse position.
p0 10 20 # Coordinates are (100+10, 50+20)
line 100 50 200 50 # Draw a line 100 to the right from the mouse position at (-10, -20).
p0 # Initialization
line 100 50 200 50 # Draw a line 100 to the right from the mouse position at (100, 50).
Commands related to document structure.
layer [name]
Sets the writing layer to the layer name. name is a string. If there is no layer name, the current layer will be the writing layer.
The default is the current layer.
If the layer with name does not exist, a new layer with that name will be created.
Do not use during grouping.
layer "Layer1" # Select layer name "Layer1"
layer # Select current layer
Commands to specify shape attributes such as color and line type.
lc [color]
Sets the line color to be used for subsequent shapes. If there is no color, the current line color will be used.
The default is the current line color.
color can be an integer value (32-bit, including alpha) or several defined values.
| name | definition |
|---|---|
| bylayer | layer color |
| black | black (0xff000000) |
| blue | blue (0xff0000ff) |
| red | red (0xffff0000) |
| magenta | purple (0xffff00ff) |
| green | green (0xff00ff00) |
| cyan | light blue (0xff00ffff) |
| yellow | yellow (0xffffff00) |
| white | white (0xffffffff) |
| gray | gray (0xff808080) |
| lightgray | light gray (0xffd3d3d3) |
| darkgray | dark gray (0xffa9a9a9) |
| transparent | transparent (0x00ffffff) |
lc -65536 # 0xffff0000 (red). 32 bits, starting from the upper, ARGB
lc 0xffff0000 # Hexadecimal notation (red). x and a to f can be capital letters
lc red # Red
lc bylayer # Layer line color
lc # Current line color
lt [name]
Sets the line type to be used for subsequent shapes. If name is not specified, the current line type is used.
The default is the current line type.
bylayer is the layer line type, construction is the auxiliary line, and if it is a string, it is the line type name.
The line type name is based on the table below.
| Line type name | Pattern | Description |
|---|---|---|
| solid | None | Solid line |
| dashed | 12.0, 3.0 | Dashed line |
| dash_space | 12.0, 12.0 | Dash-dash space |
| center | 24.0, 3.0, 7.0, 3.0 | Dash-dash line |
| phantom | 24.0, 3.0, 7.0, 3.0, 7.0, 3.0 | Dash-dash line with two dots |
| long-dash_dot | 24.0, 3.0, 0.5, 3.0 | Long dash-dash line |
| long-dash_2dot | 24.0, 3.0, 0.5, 3.0, 0.5, 3.0 | Two-point long dashed line |
| long-dash_3dot | 24.0, 3.0, 0.5, 3.0, 0.5, 3.0, 0.5, 3.0 | Two-dot long dash line |
| dot | 0.5, 3.0 | Dotted line |
| dash_dot | 12.0, 3.0, 0.5, 3.0 | Short dashed line |
| 2dash_dot | 12.0, 3.0, 12.0, 3.0, 0.5, 3.0 | Two short dashed lines |
| dash_2dot | 12.0, 3.0, 0.5, 3.0, 0.5, 3.0 | Short dashed line |
| 2dash_2dot | 12.0 , 3.0, 12.0, 3.0, 0.5, 3.0, 0.5, 3.0 | Two-dot two-short dash line |
| dash_3dot | 12.0, 3.0, 0.5, 3.0, 0.5, 3.0, 0.5, 3.0 | Three-dot two-short dash line |
| 2dash_3dot | 12.0, 3.0, 12.0, 3.0, 0.5, 3.0, 0.5, 3.0, 0.5, 3.0 | Three-dot two-short dash line |
*The pattern is a pair of line length and space, and the length is multiplied by the line width.
*The pattern was based on the SXF standard.
*Personally, I think I would use solid, dashed, center, phantom, or dot.
*If the line type name is not in the table above, it will be a warning rather than an error, and the line type will be solid.
lt "solid" # Solid line
lt bylayer # Layer line type
lt construction # Construction line
lt # Current line type
lw [width]
Sets the line width to be used for subsequent shapes. Line width is the dimension on the paper. If width is not present, the current line width is used.
The default is the current line width.
bylayer is the layer line width.
lw 0.25 # Thickness 0.25mm
lw bylayer # Layer line width
lw # Current line width
lz f
If f is 1, the end and start points of the following line, arc, polyline, spline, and bezier are connected (closing the shape). If f is 0, the end and start points are not connected.
The default is 0 (does not connect the end and start points).
fc [color]
Sets the fill color to be used for subsequent shapes. The color can be specified in the same way as for lc.
The default is the current fill color.
mt [name]
Sets the marker name as a string. If there is no marker name, the current marker name is used. The default is the current marker name.
The marker name is based on the table below.
| Name | Type | Notes |
|---|---|---|
| asterisk | ||
| circle | ||
| dot | Do not use size, use a setting for the size of dot. | |
| plus | ||
| square | ||
| triangle | ||
| x |
mt "plus" # marker '+'
mt # current marker
ms [size]
Sets the marker size. The marker size is the paper size. If there is no marker size, the current marker size is used. The default value is the current marker size.
If the marker name is dot, this size will not be used.
*The marker size is the paper size, so care must be taken if ps is 0.
ms 4 # marker size 4
ms # current marker size
tc [color]
Sets the text color to be used for subsequent shapes. The color can be specified in the same way as lc.
The default is the current text color.
tb f
The alignment of the characters. f is 0: bottom left, 1: bottom center, 2: bottom right, 3: center left, 4: center, 5: center right, 6: top left, 7: top center, 8: top right.
The default is 0 (bottom left).
fn [name]
Specifies the font name of name. If name is not specified, the current font name is used.
The default is the current font name.
fh [h]
Specifies the character height. If h is not specified, the current character height is used.
ps is 0, the size specified here is the actual size.
The default is the current character height.
fw [w]
Specifies the character width ratio. If w is not specified, the current character width ratio is used.
The default is the current character width ratio.
fs [s]
Specifies the spacing between characters. If s is not specified, the current character spacing is used.
If ps is 0, the size specified here is actual size.
The default is the current character spacing.
fa [a]
Specifies the font slant angle. Note that the font slant is positive clockwise. If a is not specified, the current slant angle is used.
The default is the current slant angle.
ff [f]
Sets the character modification (italic, bold, etc.).
f is a combination of the following values:
1: Italic
2: Bold
4: Underline
8: Strikethrough
16: (Reserved: Not used)
32: (Reserved: Not used)
64: Slant text only
128: Border
If f is not present, the current text modification is used.
The default is the current text modification.
fnt [h] [w] [s] [a] [f]
Sets font parameters other than the font name.
h: Text height, w: Text width ratio, s: Text spacing, a: Text slant, f: Text modification
If all parameters are omitted, the current values are used. If some parameters are omitted, the parameters will not change.
For default values, see fh, fw, fs, fa, and ff.
line [x0 y0] [x1 y1] [x2 y2] ... [xn yn]
Draws a line. If multiple pairs of x and y coordinates are passed as parameters, lines connecting them will be drawn.
If lz is 1, a line will be drawn between the end point and the start point.
Normally, two points are required for a line, but if there are fewer than two points, it will not be an error (nothing will be written). Also, an even number of parameters are required.
# A line connecting the coordinates (0,0), (100,0), and (100,50).
line 0 0 100 0 100 50
circle x y radius [flatness=1.0] [angle=0.0]
Draws an ellipse with center coordinates (x,y), radius radius, flatness, and angle. It can be filled.
circle 0 0 100 # Circle with center (0,0) and radius 100
circle 0 0 100 0.5 # Ellipse with center (0,0), radius 100, and flatness 0.5
circle 0 0 100 0.5 30 # Ellipse with center (0,0), radius 100, flatness 0.5, and tilt 30 degrees
arc x y radius start sweep [flatness=1.0] [angle=0.0]
Draws an elliptical arc with center coordinates (x,y), radius radius, start angle start, angle width sweep, flatness flatness, and tilt angle. It can be filled. If sweep is positive from start, it will be an arc going counterclockwise, and if it is negative, it will be a clockwise arc.
If lz is 1, a line will be drawn between the end point and the start point (this will be a Bézier curve, not a circular arc).
arc 0 0 100 30 45 # Circular arc with center (0,0), radius 100, starting angle 30, and width 45
arc 0 0 100 30 -45 0.5 # Elliptical arc with center (0,0), radius 100, starting angle 30, width -45 (45 degrees clockwise), and flattening ratio 0.5
arc 0 0 100 30 -45 0.5 30 # Elliptical arc with center (0,0), radius 100, starting angle 30, width -45 (45 degrees clockwise), flattening ratio 0.5, and tilt 30
arc 0 0 100 30 45 # Circular arc with center (0,0), radius 100, starting angle 30, and width 45
arc 0 0 100 30 -45 0.5 # An ellipse with center (0,0), radius 100, start angle 30, corner width -45 (45 degrees clockwise), and flatness 0.5.
fan x y radius start sweep [flatness=1.0] [angle=0.0]
Draws a fan (Bézier curve) with center coordinates (x,y), radius radius, start angle start, corner width sweep, flatness flatness, and inclination angle. Can be filled.
polyline [x0 y0] [x1 y1] [x2 y2] ... [xn yn]
If multiple xy coordinate pairs are passed as parameters, lines (polylines) connecting them are drawn.
If lz is 1, a line is drawn between the end point and the start point.
Can be filled.
spline [x0 y0] [x1 y1] [x2 y2] ... [xn yn]
When multiple pairs of xy coordinates are passed as parameters, a spline curve connecting them is drawn.
If lz is 1, a curve is drawn between the end point and the start point.
Can be filled.
bezier x0 y0 dx0 dy0 cx1 cy1 x1 y1 [dx1 dy1 cx2 cy2 x2 y2] ... [dxn-1 dyn-1 cxn cyn xn yn]
A cubic Bezier curve. The order is vertex, control point 1 (dx,dy), control point 2 (cx,cy), vertex. If the number of vertices is m, the total number of control points and vertices is 3*m+1.
If lz is 1, a straight line is drawn between the end point and the start point.
You can fill it.
text str x y [angle=0.0]
Draws the string str with coordinates (x,y) and angle angle. You can fill the background with the fill color.
text "test" 0 0
text "test" 0 0 30
marker x y [angle=0.0]
Draws a marker with coordinates (x,y) and angle angle.
The style uses the marker type mt, the marker size ms, and the line attributes for color, etc. (color lc, line width lw, and line type lt are only valid for construction).
group
....
....
end group
Groups the shapes between group and end group. You can also put group inside group.
The layer command, ps command, and p0 command cannot be used inside group.
If end group does not exist, the group shape will not be added (it is not yet decided whether to cause an error).
2025/04/17
2025/04/09