On 03. 05. 23 12:07, Matan wrote:
Thanks. Knocking off few points off my intelligence test for having to
be told about triangles.
As you seem to be in the know, any off the cuff suggestions for how to
render text off the viewport to match text size to a box by iterating
font sizes, one which may recommended in the case of pyglet? e.g.
drawing to coordinates off the scale v.s. using some invisible canvas or
window? anything that would be less likely to break between pyglet
revisions or be a more stable way to draw invisibly every now and then
for size matching fonts to shapes?
Sorry.I'm not in the know :(
I struggled with a similar problem a few years back, and ended up using
a monospace font instead. The pointers I gave are where I would start
today :(
On Wednesday, May 3, 2023 at 12:26:40 PM UTC+3 Petr Viktorin wrote:
On 03. 05. 23 1:04, Matan wrote:
> Hi,
>
> Just as part of easing into pyglet and opengl, I am wondering if
anyone
> can explain the following line of code:
>
>
https://github.com/pyglet/pyglet/blob/5bc0f80e0446bc4ebb2b381370802f60320c0d8a/pyglet/shapes.py#L1178
<https://github.com/pyglet/pyglet/blob/5bc0f80e0446bc4ebb2b381370802f60320c0d8a/pyglet/shapes.py#L1178>
>
> Where it seems like 2 of the 4 corners of the rectangle repeat on
the
> array. I just wanted to experiment making a rectangle shape with
rounded
> corners by using bezier curves on the corners and would be happy to
> learn why opengl is being sent 6 points here.
A rectangle is made of two triangles:
D--C
| /|
|/ |
A--B
The vertex list has 3 points for each triangle: A,B,C, A,C,D.
If you're just starting out, I recommend trying a straight-edged shape
(a trapezoid, for example) before moving on to curved corners :)
> Also in case you have any thoughts or suggestions about sizing
such a
> rectangle to wrap around text such that adjusting the edges of
the box
> to fully contain the text glyphs (or sizing the glyphs to match
the size
> of the box can be accomplished). This is towards making text areas
> nicely surrounded by a shape. The current button implementation
under
> `gui` seems to use an image instead.
Look at TextLayout's content_width and content_height:
https://pyglet.readthedocs.io/en/latest/modules/text/layout.html#pyglet.text.layout.TextLayout
<https://pyglet.readthedocs.io/en/latest/modules/text/layout.html#pyglet.text.layout.TextLayout>
Classes like Label inherit these from TextLayout.
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