PPTX.gallery

Basic Shapes

Arc

"shape": "arc" draws PowerPoint's arc preset. The PPTX export writes it as a native shape with its adjust values, so it stays editable in PowerPoint.

Search words: curve, arch

Frame

A shape block takes the largest frame of 1:1 (width to height) that fits its cell, centered; set aspectRatio for another. Text inside is fitted to the preset's text rectangle and never set below the readability floor.

Adjust Values

NameDefaultRange
adj1270°0° to 360°
adj20°0° to 360°

OPF units: fractions (most often of the shorter side) and degrees, for example "adjust": { "adj1": 270 }.

OPF Config

{
  "$schema": "https://openpresentation.org/schema/opf/v1",
  "name": "PPTX.gallery — shapes/arc",
  "description": "The arc preset as an OPF shape block.",
  "slides": [
    {
      "title": "Arc",
      "blocks": [
        {
          "shape": "arc",
          "text": "Arc"
        }
      ]
    }
  ]
}

More Basic Shapes