| import { Camera } from './Camera.js'; | |
| class OrthographicCamera extends Camera { | |
| constructor( left = - 1, right = 1, top = 1, bottom = - 1, near = 0.1, far = 2000 ) { | |
| super(); | |
| this.isOrthographicCamera = true; | |
| this.type = 'OrthographicCamera'; | |
| this.zoom = 1; | |
| this.view = null; | |
| this.left = left; | |
| this.right = right; | |
| this.top = top; | |
| this.bottom = bottom; | |
| this.near = near; | |
| this.far = far; | |
| this.updateProjectionMatrix(); | |
| } | |
| copy( source, recursive ) { | |
| super.copy( source, recursive ); | |
| this.left = source.left; | |
| this.right = source.right; | |
| this.top = source.top; | |
| this.bottom = source.bottom; | |
| this.near = source.near; | |
| this.far = source.far; | |
| this.zoom = source.zoom; | |
| this.view = source.view === null ? null : Object.assign( {}, source.view ); | |
| return this; | |
| } | |
| setViewOffset( fullWidth, fullHeight, x, y, width, height ) { | |
| if ( this.view === null ) { | |
| this.view = { | |
| enabled: true, | |
| fullWidth: 1, | |
| fullHeight: 1, | |
| offsetX: 0, | |
| offsetY: 0, | |
| width: 1, | |
| height: 1 | |
| }; | |
| } | |
| this.view.enabled = true; | |
| this.view.fullWidth = fullWidth; | |
| this.view.fullHeight = fullHeight; | |
| this.view.offsetX = x; | |
| this.view.offsetY = y; | |
| this.view.width = width; | |
| this.view.height = height; | |
| this.updateProjectionMatrix(); | |
| } | |
| clearViewOffset() { | |
| if ( this.view !== null ) { | |
| this.view.enabled = false; | |
| } | |
| this.updateProjectionMatrix(); | |
| } | |
| updateProjectionMatrix() { | |
| const dx = ( this.right - this.left ) / ( 2 * this.zoom ); | |
| const dy = ( this.top - this.bottom ) / ( 2 * this.zoom ); | |
| const cx = ( this.right + this.left ) / 2; | |
| const cy = ( this.top + this.bottom ) / 2; | |
| let left = cx - dx; | |
| let right = cx + dx; | |
| let top = cy + dy; | |
| let bottom = cy - dy; | |
| if ( this.view !== null && this.view.enabled ) { | |
| const scaleW = ( this.right - this.left ) / this.view.fullWidth / this.zoom; | |
| const scaleH = ( this.top - this.bottom ) / this.view.fullHeight / this.zoom; | |
| left += scaleW * this.view.offsetX; | |
| right = left + scaleW * this.view.width; | |
| top -= scaleH * this.view.offsetY; | |
| bottom = top - scaleH * this.view.height; | |
| } | |
| this.projectionMatrix.makeOrthographic( left, right, top, bottom, this.near, this.far, this.coordinateSystem ); | |
| this.projectionMatrixInverse.copy( this.projectionMatrix ).invert(); | |
| } | |
| toJSON( meta ) { | |
| const data = super.toJSON( meta ); | |
| data.object.zoom = this.zoom; | |
| data.object.left = this.left; | |
| data.object.right = this.right; | |
| data.object.top = this.top; | |
| data.object.bottom = this.bottom; | |
| data.object.near = this.near; | |
| data.object.far = this.far; | |
| if ( this.view !== null ) data.object.view = Object.assign( {}, this.view ); | |
| return data; | |
| } | |
| } | |
| export { OrthographicCamera }; | |