Add usage example for draw_rectangle_on_bitmap

[jasveena15]

Description

This pull request adds a new usage example for the draw_rectangle_on_bitmap function.

The example shows how to draw rectangles onto a bitmap first and then display that bitmap in a window. This helps demonstrate the difference between drawing to an off-screen bitmap and drawing directly to the screen.

Type of change

• Documentation (update or new)

How Has This Been Tested?

The example was tested locally in all required languages:

• C++
• C# top-level
• C# OOP
• Python

The output was verified to ensure:

• the window opens correctly
• the bitmap is created and displayed
• the rectangles are drawn onto the bitmap
• the example appears correctly on the local SplashKit website

Reproduction steps:

1. Place the usage example files in public/usage-examples/graphics/
2. Run the example files locally using SplashKit Manager
3. Run npm run dev
4. Open the local website and navigate to the draw_rectangle_on_bitmap API page
5. Confirm the usage example appears under the correct function page with all language tabs

Testing Checklist

• Tested in latest Chrome
• Tested in latest Firefox
• npm run build
• npm run preview

Checklist

If involving code

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

If modified config files

• I have checked the following files for changes:
  • package.json
  • astro.config.mjs
  • netlify.toml
  • docker-compose.yml
  • custom.css

Folders and Files Added/Modified

• Added:

  • public/usage-examples/graphics/draw_rectangle_on_bitmap-1-basic.cpp
  • public/usage-examples/graphics/draw_rectangle_on_bitmap-1-basic.py
  • public/usage-examples/graphics/draw_rectangle_on_bitmap-1-basic-top-level.cs
  • public/usage-examples/graphics/draw_rectangle_on_bitmap-1-basic-oop.cs
  • public/usage-examples/graphics/draw_rectangle_on_bitmap-1-basic.txt
  • public/usage-examples/graphics/draw_rectangle_on_bitmap-1-basic.png

• Modified:

  • None

Additional Notes

This example was designed to be beginner-friendly and visually clear for usage example readers. It focuses on a simple representative overload of draw_rectangle_on_bitmap using x, y, width, and height.

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[abdullah12121212]

nice

[Sparsh300]

Looks good overall. Please just confirm whether the filenames should use the standard -example naming instead of -basic as per CONTRIBUTING.mdx.

[jasveena15]

Looks good overall. Please just confirm whether the filenames should use the standard -example naming instead of -basic as per CONTRIBUTING.mdx.

i guess it was just overlooked , i have renamed the files anyways , thanks