: Colour defined area fraction of shape in inkscape I have a number of complex shapes (for example a sketch of a gecko, an ant and a frog) and want to colour a defined fraction of the area

@Cofer715

You can do iteratively, by hand, at least with 0.91:

Draw your shape. See my beautiful walrus:

In the extensions-menue, there is a point - in German it is "Erweiterungen/Pfad visualisieren/Pfad ausmessen" In English it should be similar to 'Extensions/visualize path/measure path'. You mark the path in question, select 'area' from the drop down, and 'perform/commit/enter' (anwenden).

Now the size is printed as in the upper left corner. Now we calculate that value to 20% or whateve we need, which gives me round about 14.000.

Create a duplicate of the path, and remove the upper nodes, pull the lower nodes down, measure, repeat.

It might be hard for a figure with many interceptions and a lot of work, depending on how exactly it has to fit and how complex the figures are, but for an error below 1%, I guess it is doable.

Bonus quesiton: Why is the size negative? I have no idea. :) 5 positive vectors, 3 negative ones, multiplied?

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@Jennifer810

Question not entirely clear, is the following strategy useful?

1) Create your form (ant, ...)


2) Create your fill rectangle (here in red)


3) Make a clone of the form you made in step 1 (select the form, then Edit > Clone > Create Clone or shortcut Alt+D)


4) Use the clone to clip the color rectangle (with the clone still selected, shift+leftclick the rectangle, then Object > Clip > Set)


5) result:


Since the clipping mask is a clone, you can still tweak the original form and the clipping mask will automatically follow.
More info on cloning in Tavmjong's manual, chapter Clones, and on clipping in Tavmjong's manual, chapter Clipping.

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