Zoom By Rectangle Process

The process allows you to fit (zoom) the camera in a rectangular area which is specified by drawing the rectangle with the drag and drop mechanism.

Below we will consider the process.

Features

ZoomRectProcess type (TypeScript):

export type ZoomRectProcess = {
    name: "ZoomRect"
    options?: ZoomRectOptions
    events?: {
        onZoom?: (position: C3DViewPoint, target: C3DViewPoint) => void
    }
}

Important

When there’s no geometry found under the center point of specified rectangle and the perspective projection is turned on, the process does not perform fitting the camera in.

Options

Zoom Rect Options type (Typescript):

export type ZoomRectOptions = {
    duration?: number
}

Name	Description
`duration`	Duration of camera zooming animation. The default is `-1` that means no animation

Callbacks

Available events:

onZoom(position, target): emitted after the process zooms the camera.

Running

Example of running the process (TypeScript):

view.runCommand({
    name: "RunProcessCommand", // name of command
    // next arguments
    process: {
        name: "ZoomRect", // process name
    }
})