import {fitWindowScale} from './BlenderWindowFrame';

export const PEEKING_DOOR_ASPECT=.74;
export interface MaskBounds {x:number;y:number;width:number;height:number}
/** Door geometry is independent of the uploaded photograph. The legacy photo aperture
 * remains available for conservative foreground-detail clearance. The runtime
 * corner camera follows the physical door dimensions. */
export function peekingLayout(viewAspect:number,photoAspect:number) {
  const scale=fitWindowScale(viewAspect,PEEKING_DOOR_ASPECT)*.82;
  const legacy=fitWindowScale(viewAspect,photoAspect)*.82;
  const width=scale*PEEKING_DOOR_ASPECT*.8,height=scale*.8;
  const cameraBounds:[number,number,number]=[legacy*photoAspect*.8,legacy*.8,.6];
  return {width,height,cameraBounds,clearanceScale:Math.min(width,height,...cameraBounds.slice(0,2))};
}
/** No pose synthesis: place the actual selected silhouette. Default crops the
 * lower edge behind the sill; manual XY remains available even at scale 1. */
export function placePeekingDog(layout:{width:number;height:number},aspect:number,bounds:MaskBounds,z:number,zoom:number,panX:number,panY:number) {
  const h=layout.height,w=layout.width;
  const objectHeight=Math.min(.48*h,.43*w/(Math.max(.01,bounds.width)*aspect/Math.max(.01,bounds.height)))*zoom;
  const height=objectHeight/Math.max(.01,bounds.height),width=height*aspect;
  const centerX=.24*w+panX*.35*w,top=-.56*h+objectHeight+panY*.35*h;
  const x=centerX-(bounds.x+bounds.width/2-.5)*width;
  const y=top-(.5-bounds.y)*height;
  return {x,y,z,width,height};
}