Hi Marcot,
When you add an item to a Batch, a VertexList object is returned. It really
does not matter how you store this. It all depends on the type of program
or game you are making. For example, you could make a class for each
shape. This class could have properties for updating the x and y position
easily.
What kind of project are you planning, or are you still testing?
Could you please explain this part? The code seems to work as expected for
me.
""It seems OK but when I delete the first element of dictionary the
behavior is incorrect.""
-Ben
On Wednesday, August 8, 2018 at 1:07:04 AM UTC+9, marcot...@gmail.com wrote:
>
> Hi,
> I have a question about the best way to handle "batch".
> Given a set of shapes, I add them to a batch.
> After I want to modify a single shape or delete it.
>
> Then I need to store into variables all shapes in batch. I tried to use a
> dictionary.
> When I add a shape to the batch, I add also an element to the dictionary
> using a number as key for simple access.
> *Is it a good way? Any other ideas?*
>
> It seems OK but when I delete the first element of dictionary the behavior
> is incorrect.
> Here a complete code for tests.
> from pyglet.gl import *
>
> window = pyglet.window.Window(resizable=True)
> batch = pyglet.graphics.Batch()
>
> # dictionary will be a container for access to single shapes
> dictionary = {}
>
> # we add three elements to dictionary
> # in the same line we add the shape to the batch
> dictionary[0] = batch.add_indexed(3, pyglet.gl.GL_TRIANGLES, None,
> (0, 1, 2),
> ('v2f', (10, 10, 10, 100, 100, 10)),
> ('c3B', (255, 0, 0) * 3))
>
> dictionary[1] = batch.add_indexed(3, pyglet.gl.GL_TRIANGLES, None,
> (0, 1, 2),
> ('v2f', (10, 10, 70, 200, 200, 70)),
> ('c3B', (0, 255, 0) * 3))
>
> dictionary[2] = batch.add_indexed(3, pyglet.gl.GL_TRIANGLES, None,
> (0, 1, 2),
> ('v2f', (10, 10, 150, 300, 300, 150)),
> ('c3B', (0, 0, 255) * 3))
>
>
> # ##########################
> # # Try this:
> #
> # First test: leave all this part commented
> #
> # Second test: uncomment ONLY the line below (access and modify a single
> shape)
> # dictionary[1].vertices=(10, 10, 100, 400, 200, 70)
> #
> # Third test: uncomment ONLY the line below (delete a single shape)
> # dictionary[1].delete()
> #
> # Fourth test: uncomment ONLY the line below (delete the first shape)
> # dictionary[0].delete()
> #
> # ##########################
>
> @window.event
> def on_draw():
> window.clear()
> batch.draw()
>
>
> pyglet.app.run()
> Inserisci qui il codice...
>
>
>
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