This is for control PowerPoint with PowerShell.

Points.ps1

Class Points {
    [double] $Left
    [double] $Top
    [double] $Width
    [double] $Height

    [Points] Magnify([double] $percent) {
        $center_X = $this.Left + ($this.Width / 2)
        $center_Y = $this.Top + ($this.Height /2)
        $newWidth = $this.Width * $percent
        $newHeight = $this.Height * $percent
        $newLeft = $this.Left + ($this.Width - $newWidth) / 2
        $newTop = $this.Top + ($this.Height - $newHeight) / 2
        return New-Object Points($newLeft, $newTop, $newWidth, $newHeight)
    } 

    Points([double] $Left, [double] $Top, [double] $Width, [double] $Height) {
        $this.Left = $Left
        $this.Top = $Top
        $this.Width = $Width
        $this.Height = $Height
    }
}