Combining shape-based front pages with block-based content results in layout misalignment

[EmilPoulsen]

@interopxyz
I love the flexibility of combining block-based and shape-based content into a single PDF document. I’ve encountered a problem that I’d like to get your thoughts on.

📚 Vocabulary

Here’s how I define the terms (let me know if these differ from your understanding):

• Block-based: Content is added sequentially without specifying its exact position on the page, allowing for automatic pagination.
• Shape-based: Content is positioned with precise control over layout on the page.

🎯 What I’m trying to achieve

I want to create a document structured as follows:

1. Front page: Combines geometry and text, using shape-based layout for precise control.
2. Intro page: Follows the front page, also combining geometry and text, with a shape-based layout.
3. Main content: Contains drawings and text, formatted as block-based to allow for variable length.

To simulate this issue, I’ve created a GH file using PDF Plus, which combines elements from the following example files:

• PdfPlus-Blk-06-Drawing
• PdfPlus-Shp-01-GeometryTypes
• PdfPlus-Blk-01-BasicText_A

❌ Problem

While I can successfully create the front and intro pages, the issue arises when I combine them with block-based drawings: the drawings appear on the first page instead of following the intro page.

Full file:
PdfPlus-BlockbasedDrawings-And-FrontPage-Error.pdf

✅ Expected Outcome

When I replace the block-based drawings with block-based text, the layout works as expected: the block-based content appears on pages following the front and intro pages.

Full PDF:
PdfPlus-BlockbasedDrawings-And-FrontPage-Expected.pdf

🗂️ Example File

I’ve attached an example file that demonstrates both the issue and the expected behavior.

Grasshopper file:
PdfPlus-BlockbasedDrawings-And-FrontPage.zip

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Any ideas on where I should start looking in the source code to address this?
I’d be happy to contribute if you can point me in the right direction!