Corel Painter Help | Defining warp and weft expressions

Quick links to procedures on this page:

•

Defining warp and weft expressions

The warp and weft expressions use the information in the tie-up to extend and evolve the weave into larger, more complex patterns. For more information, see Designing the tie-up.

Warp and weft expressions in traditional weaving

In traditional weaving, the warp expression represents the threading sequence, in other words, it describes which warp threads are connected to which harnesses. The weft expression is the treadling sequence that determines which treadle is pressed (and therefore which harnesses are raised) for each successive weft thread.

The following table describes which warp threads are connected to which harnesses for the warp sequence 234123:


Connect warp thread	To harness
#1	#2
#2	#3
#3	#4
#4	#1
#5	#2
#6	#3
The sequence repeats for subsequent threads.
#7	#2
#8	#3
#9	#4

The threading sequence above, 234123, has a length of 6, which indicates that the pattern runs for 6 threads before repeating.

The following table describes which treadle is pressed (and therefore which harnesses are raised) for each successive weft thread for the weft sequence 654:


Press treadle	For weft thread
#6	#1
#5	#2
#4	#3
The sequence repeats for subsequent threads.
#6	#4
#5	#5
#4	#6

Warp and weft expressions in Corel Painter

In Corel Painter, you need to use the weave pattern expression language to generate a weave. You may find working with the pattern expression language more logical than working with very complex expanded sequences. For more information see, Reference: Expression operators.

The following table includes an example of a traditional pattern expression expressed in the Corel Painter pattern language.


Traditional expression	Pattern language expression
1223334444333221	(1-4-1)[](1-4-1)

To define a warp or weft expression

•

In the Edit Weave dialog box, type an expression in the Warp box.

As you type a warp or weft sequence, the "Expands to n"message above the panel displays the length n (number of digits) of the expression. This describes the number of threads in the sequence.

If Corel Painter cannot resolve the expression, the expansion length message displays "!" (error).

If you want to copy the Warp expression to the Weft expression, click the Tromp as Writ (pattern) button.

Some features described in the Help are available only in Corel Painter 2015, and are not included in Painter Essentials 5. For more information about Corel Painter 2015, visit http://www.painterartist.com/.

To get started with Painter Essentials 5, see the Painter Essentials 5 Quick Start Guide.