Render a 2D scene to an image — raylibr

Creates a hidden window, calls the supplied drawing function on a black background, and returns the captured framebuffer as an image object. The image auto-displays in knitr documents (like ggplot2 plots) and can be saved with export_image().

Usage

raylibr_screenshot(draw, width = 640L, height = 480L)

Arguments

draw: A function containing drawing calls (e.g., draw_circle, draw_text).
width: An integer. Window width in pixels.
height: An integer. Window height in pixels.

Value

An image object. On HiDPI displays the framebuffer is captured at full pixel density (e.g., 1280x960 for a 640x480 window at 2x scale); knitr still displays it at width x height.

Examples

if (FALSE) {
raylibr_screenshot(function() {
  draw_circle(200L, 150L, 80.0, "yellow")
})
}