Enum NewBlock 

pub enum NewBlock {
    Idle,
    Dragging {
        start: Pos2,
    },
    Placing {
        start: Pos2,
        corner: Pos2,
    },
}

Two ways to place a block, both ending in the same rect: press-drag-release, or click one corner and click the opposite one.

Variants

Idle

Dragging

The button is held; the rect follows the pointer until release.

Fields

start: Pos2

Placing

A click set the first corner; the rect follows the pointer until the second corner is clicked. Escape cancels.

Fields

start: Pos2

corner: Pos2

Trait Implementations

impl From<NewBlock> for Tool

fn from(v: NewBlock) -> Tool

Converts to this type from the input type.

impl ToolTrait for NewBlock

fn name(&self) -> ToolName

fn widget<C: Canvas>( &mut self, data: &mut Drawing<'_>, interaction: &Interaction, painter: &mut Style<'_, C>, ) -> Option<Transition>

fn preview<C: Canvas>( &mut self, _data: &mut Drawing<'_>, _interaction: &Interaction, _painter: &mut Style<'_, C>, _phase: &PreviewPhase, )

Advance this frame’s drag state and preview the geometry it implies. Runs before Self::widget paints, on every frame of a drag — including one carrying no event at all, which is what a repaint mid-drag looks like.

fn selection(&self) -> Option<Deletable>

The item this tool currently has selected that can be deleted, if any. Used to drive the delete button overlay.

fn overlay_anchor(&self) -> Option<Pos2>

A world-space point the selection overlay should anchor to, overriding the selection’s bounding box. A route spans a wide bbox but is picked at one spot, so its overlay anchors at the click instead of the whole polyline.

impl TryInto<NewBlock> for Tool

type Error = &'static str

The type returned in the event of a conversion error.

fn try_into(self) -> Result<NewBlock, <Self as TryInto<NewBlock>>::Error>

Performs the conversion.