Struct MotionVectorParams 

pub struct MotionVectorParams {
    pub grid_x: u32,
    pub grid_y: u32,
    pub dx: f32,
    pub dy: f32,
    pub length: f32,
    pub color: [f32; 4],
}

Motion-vector grid parameters.

MD2 draws an n_x × n_y grid of short line segments into the warp output every frame; the feedback path then pulls them into trails that visualise the per-pixel motion field. Trails emerge from the warp, the segments themselves are stateless — we just paint them at the same screen-space grid every frame, offset by (dx, dy).

MD2 caps the grid at 64 × 48 and the renderer enforces the same clamp regardless of what the preset declares.

Fields

grid_x: u32

Grid width in cells, clamped to [0, 64].

grid_y: u32

Grid height in cells, clamped to [0, 48].

dx: f32

Horizontal grid offset in MD2 preset-UV units [0, 1]. Typical presets animate this so the grid drifts across the screen.

dy: f32

Vertical grid offset in MD2 preset-UV units [0, 1].

length: f32

Segment length as a fraction of horizontal cell spacing.

color: [f32; 4]

Segment colour RGBA. a == 0.0 → no draw.

Trait Implementations

impl Clone for MotionVectorParams

fn clone(&self) -> MotionVectorParams

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MotionVectorParams

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for MotionVectorParams

fn default() -> Self

Returns the “default value” for a type.

impl Copy for MotionVectorParams