Module transform 

Shared data-to-screen coordinate transformation for instanced renderers.

This module provides DataTransform used by LineRenderer, PointRenderer, and QuadRenderer to map data coordinates to screen pixels on the GPU.

How it works

Data points are stored in their original coordinate space. The GPU applies:

screen_pos = data_pos * scale + offset
clip_pos   = projection * screen_pos

This means pan/zoom only updates a small uniform buffer (32 bytes), not all the vertex/instance data. For charts with thousands of data points, this is the key to smooth interaction.

Structs

DataRangeParams

Parameters describing a data range and its target plot area.

DataTransform

High-level data-to-screen transform.