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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 | import type { ICamera } from '../../../types';
import {
cloneVolume3DCamera,
getVolume3DProjectionPosition,
getVolume3DProjectionScale,
} from './volume3DProjectionCamera';
import {
VOLUME3D_PROJECTION_ID,
type Volume3DProjectionRequest,
type Volume3DProjectionSnapshot,
} from './Volume3DProjectionTypes';
import type { Volume3DCamera } from './viewport3DTypes';
/**
* Builds the capability-based Volume3D projection snapshot for a viewport-like
* object or explicit 3D camera request.
*/
export function getVolume3DProjectionSnapshot(
request: Volume3DProjectionRequest
): Volume3DProjectionSnapshot | undefined {
const { viewport } = request;
const resolvedView = request.resolvedView ?? viewport.getResolvedView?.();
const viewState = request.camera ?? viewport.getViewState?.();
const rendererCamera = resolvedView?.toICamera() ?? viewState;
if (!rendererCamera) {
return;
}
const camera = cloneVolume3DCamera(
rendererCamera as Volume3DCamera & ICamera
);
const canvasWidth =
request.canvasWidth ??
viewport.canvas?.clientWidth ??
viewport.element?.clientWidth ??
1;
const canvasHeight =
request.canvasHeight ??
viewport.canvas?.clientHeight ??
viewport.element?.clientHeight ??
1;
const frameOfReferenceUID =
request.frameOfReferenceUID ??
resolvedView?.getFrameOfReferenceUID() ??
viewport.getFrameOfReferenceUID?.();
return {
kind: VOLUME3D_PROJECTION_ID,
adapterId: VOLUME3D_PROJECTION_ID,
canvasHeight,
canvasWidth,
dataId: request.dataId,
frameOfReferenceUID,
presentation: {
camera: cloneVolume3DCamera(camera),
position: getVolume3DProjectionPosition(camera),
rotation: camera.rotation,
scale: getVolume3DProjectionScale({ camera, canvasHeight }),
},
rendererCamera: cloneVolume3DCamera(camera),
resolvedView,
spaces: {
canvas: Boolean(resolvedView),
renderer: true,
world: Boolean(resolvedView || camera.focalPoint),
},
transforms: resolvedView
? {
canvasToWorld: (point) => resolvedView.canvasToWorld(point),
worldToCanvas: (point) => resolvedView.worldToCanvas(point),
}
: undefined,
viewState: cloneVolume3DCamera(camera),
viewportType: viewport.type,
};
}
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