charton 0.5.0

A high-performance, layered charting system for Rust, featuring a flexible data core and multi-backend rendering.
Documentation 
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use crate::chart::Chart;
use crate::mark::point::MarkPoint;

/// Extension implementation for `Chart` to support Scatter Plots (MarkPoint).
///
/// This module provides the user-facing API to initialize and configure
/// the visual properties of point marks.
impl Chart<MarkPoint> {
    /// Configures the visual properties of the point mark using a closure.
    ///
    /// This is the primary entry point for customizing the look of the scatter plot.
    /// Since [MarkPoint] implements a fluent builder interface, you can chain
    /// multiple property changes inside the closure efficiently.
    ///
    /// # Example
    /// ```rust,ignore
    /// chart.mark_point()
    ///      .configure_point(|m| m.color("red").size(5.0).opacity(0.8))
    /// ```
    pub fn configure_point<F>(mut self, f: F) -> Self
    where
        F: FnOnce(MarkPoint) -> MarkPoint,
    {
        // Extract the existing mark or start with a default one
        let mark = self.mark.take().unwrap_or_default();

        // Apply the configuration closure and re-insert the mark
        self.mark = Some(f(mark));
        self
    }
}