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dpg.draw_text cannot rotate by applying a rotation matrix. #2288

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DokaebiYe opened this issue Feb 20, 2024 · 3 comments
Open

dpg.draw_text cannot rotate by applying a rotation matrix. #2288

DokaebiYe opened this issue Feb 20, 2024 · 3 comments
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state: pending not addressed yet type: bug bug

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@DokaebiYe
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DokaebiYe commented Feb 20, 2024

Version: 1.10.1
Operating System: Windows 11

My Issue/Question

The text drew by dpg.draw_text cannot be rotate.

To Reproduce

Steps to reproduce the behavior:
1.add a draw_node
2.use draw_text in draw node
3.apply the draw node a rotation matrix
4.only the text draw won't rotate,but other draws( lines, rects, circles, etc) is normal.

Expected behavior

the text draw should normally be rotate after applying the transform matrix to it's parent(draw_node)

Screenshots/Video

image

Standalone, minimal, complete and verifiable example

import dearpygui.dearpygui as dpg,math

dpg.create_context()
dpg.create_viewport()
dpg.setup_dearpygui()

with dpg.window(label="tutorial", width=550, height=550):
    with dpg.drawlist(width=500, height=500):
        with dpg.draw_node(tag="root node"):
            dpg.draw_text([0,0],text='test Text', color=[255, 255, 255], size=20)


dpg.apply_transform("root node", dpg.create_rotation_matrix(math.pi*0.5, [0,0,-1]))

dpg.show_viewport()
while dpg.is_dearpygui_running():
    dpg.render_dearpygui_frame()

dpg.destroy_context()
@DokaebiYe DokaebiYe added state: pending not addressed yet type: bug bug labels Feb 20, 2024
@v-ein
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v-ein commented Feb 20, 2024

Depending on the use case, you might want for text to actually keep its orientation regardless of rotation 😂 (e.g. text labels). So there should probably be an option to control that.

With regards to implementation, the following discussion looks interesting:
ocornut/imgui#1286

@DokaebiYe
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Yes, it's looks nice.
so will next dpg version add this option?
it's crucial for making widgets like selection wheel

@v-ein
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v-ein commented Feb 20, 2024

Honestly, I wouldn't count on it. DPG is in maintenance mode and no new features are expected. You (or anyone else for that matter) could implement it on your own, and open a pull request to merge into DPG.

DPG developers are now working on another library named Pilot Light:
https://github.com/hoffstadt/pilotlight

This one is supposed to solve many (architectural) issues DPG has, but it will be a different library and a different API. With their main focus on Pilot Light, resources for DPG are limited.

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state: pending not addressed yet type: bug bug
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