Gmagick::charcoalimage

(PECL gmagick >= Unknown)

Gmagick::charcoalimage — Simulates a charcoal drawing

publicGmagick::charcoalimage(float$radius, float$sigma): Gmagick

Simulates a charcoal drawing.

radius: The radius of the Gaussian, in pixels, not counting the center pixel.
sigma: The standard deviation of the Gaussian, in pixels.

The Gmagick object with charcoal simulation.

错误时抛出 GmagickException。