93 lines
3.1 KiB
Rust
93 lines
3.1 KiB
Rust
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//! # Rust bindings to ImPlot
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//!
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//! This crate contains idiomatic bindings to the C++ implot library, which
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//! use the bindings exposed by the `implot-sys` crate.
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pub extern crate implot_sys as sys;
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use sys::imgui::im_str;
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/// Struct to represent an ImPlot.
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pub struct Plot {
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/// Title of the plot, shown on top.
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title: String,
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/// Label of the x axis, shown on the bottom
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x_label: String,
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/// Label of the y axis, shown on the left
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y_label: String,
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/// Size of the plot in x direction, in pixels.
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size_x: u32,
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/// Size of the plot in y direction, in pixels.
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size_y: u32,
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/// Flags relating to the plot TODO(4bb4) make those into bitflags
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plot_flags: sys::ImPlotFlags,
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/// Flags relating to the first x axis of the plot TODO(4bb4) make those into bitflags
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x_flags: sys::ImPlotAxisFlags,
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/// Flags relating to the first y axis of the plot TODO(4bb4) make those into bitflags
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y_flags: sys::ImPlotAxisFlags,
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/// Flags relating to the second x axis of the plot (if present, otherwise ignored)
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/// TODO(4bb4) make those into bitflags
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x2_flags: sys::ImPlotAxisFlags,
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/// Flags relating to the second y axis of the plot (if present, otherwise ignored)
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/// TODO(4bb4) make those into bitflags
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y2_flags: sys::ImPlotAxisFlags,
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}
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impl Plot {
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/// Create a new plot with some defaults set. Does not draw anything yet.
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pub fn new() -> Self {
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// TODO(4bb4) question these defaults, maybe remove some of them
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Self {
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title: "".to_owned(),
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x_label: "".to_owned(),
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y_label: "".to_owned(),
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size_x: 400,
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size_y: 400,
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plot_flags: 0xFF,
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x_flags: 7,
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y_flags: 7,
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x2_flags: 0,
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y2_flags: 0,
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}
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}
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/// Attempt to show the plot. Only do things with it and call `end()` after that
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/// if this returns `true`.
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pub fn begin(&self) -> bool {
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unsafe {
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sys::ImPlot_BeginPlot(
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im_str!("{}", self.title).as_ptr(),
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im_str!("{}", self.x_label).as_ptr(),
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im_str!("{}", self.y_label).as_ptr(),
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sys::ImVec2 {
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x: self.size_x as f32,
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y: self.size_y as f32,
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},
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self.plot_flags,
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self.x_flags,
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self.y_flags,
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self.x2_flags,
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self.y2_flags,
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)
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}
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}
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/// End a previously-`begin()`ed plot. Only call if `begin()` returned `true`.
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pub fn end(&self) {
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unsafe { sys::ImPlot_EndPlot() }
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}
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}
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// TODO(4bb4) convert to struct and add methods to set title and flags
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/// Plot a line. Use this between Plot::begin() and Plot::end().
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pub fn plot_line(x: &Vec<f64>, y: &Vec<f64>, label: &str) {
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unsafe {
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implot_sys::ImPlot_PlotLinedoublePtrdoublePtr(
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im_str!("{}", label).as_ptr() as *const i8,
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x.as_ptr(),
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y.as_ptr(),
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x.len().min(y.len()) as i32, // "as" casts saturate as of Rust 1.45
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0,
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8,
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);
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}
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}
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