DIRECTORY
FunctionCache, Imager, IO, Rope, SV2d, SV3d, SVBasicTypes, SVModelTypes, SVRayTypes;

SVSceneTypes: CEDAR DEFINITIONS =
BEGIN
Artwork: TYPE = SVModelTypes.Artwork;
BoundHedron: TYPE = SVBasicTypes.BoundHedron;
Camera: TYPE = SVModelTypes.Camera;
Color: TYPE = Imager.Color;
CoordSystem: TYPE = SVModelTypes.CoordSystem;
CSGTree: TYPE = SVRayTypes.CSGTree;
FrameBox: TYPE = SVModelTypes.FrameBox;
LightSourceList: TYPE = SVModelTypes.LightSourceList;
Line3d: TYPE = SV3d.Line3d;
Matrix4by4: TYPE = SV3d.Matrix4by4;
Plane: TYPE = SV3d.Plane;
Point2d: TYPE = SV2d.Point2d;
Point3d: TYPE = SV3d.Point3d;
PointSetOp: TYPE = SVRayTypes.PointSetOp;
PolyDatabase: TYPE = SV3d.PolyDatabase;
Primitive: TYPE = SVRayTypes.Primitive;
Projection: TYPE = SVModelTypes.Projection;
Vector3d: TYPE = SV3d.Vector3d;

Database: TYPE = REF DatabaseObj;
DatabaseObj: TYPE = RECORD [
scenes: LIST OF Scene];

Skitter: TYPE = REF SkitterObj;
SkitterObj: TYPE = RECORD [
alive: BOOL,
cameraPoint: Point2d,
assembly: Slice,
primitive: Primitive,
skitterWORLD: Matrix4by4,
svData: REF ANY,
mode: SkitterMode];
SkitterMode: TYPE = {surface, tightrope, coordframe};
Scene: TYPE = REF SceneObj;
SceneObj: TYPE = RECORD [
name: Rope.ROPE,
coordSysRoot: CoordSystem, -- WORLD coordinates
lightSources: LightSourceList,
masterObjects: MasterObjectList,
assembly: Slice,
selected: SelectedData,
savedSelected: SelectedData,  -- for Abort and Extend Select
tree: CSGTree,
cameras: FileCameraList,
anchor: Skitter,
cameraOrder: LIST OF Rope.ROPE,
backgroundColor: Color,
shadows: BOOL,
dirty: BOOL];

SelectedData: TYPE = RECORD [
normal: LIST OF SliceDescriptor _ NIL,
hot: LIST OF SliceDescriptor _ NIL,
active: LIST OF SliceDescriptor _ NIL
];


SliceGenerator: TYPE = REF SliceGeneratorObj;
SliceGeneratorObj: TYPE = RECORD [
list: LIST OF Slice
];
SliceDescriptorGenerator: TYPE = REF SliceDescriptorGeneratorObj;
SliceDescriptorGeneratorObj: TYPE = RECORD [
list: LIST OF SliceDescriptor
];
SliceDescriptor: TYPE = REF SliceDescriptorObj;
SliceDescriptorObj: TYPE = RECORD [
slice: Slice,
parts: SliceParts
];
SliceParts: TYPE = REF ANY;

Slice: TYPE = REF SliceObj;
SliceObj: TYPE = RECORD [
name: Rope.ROPE,
coordSys: CoordSystem,
shape: REF ANY, -- a Shape or an assembly list
normalSelectedParts: SliceDescriptor,
hotSelectedParts: SliceDescriptor,
activeSelectedParts: SliceDescriptor,
bBoxCache: FunctionCache.Cache,
onOverlay: BOOL _ FALSE,
mark: BOOL _ FALSE, -- for sweeping thru scenes by Undelete mechanism
artwork: Artwork,
showAs: ShowAsType _ normal,
isTool: BOOL _ FALSE,
toolMasterObject: MasterObject _ NIL,
sittingOn: Rope.ROPE _ NIL -- the assembly whose surface it is sitting on.
];

ShowAsType: TYPE = {invisible, normal, tool, both};
Shape: TYPE = REF ShapeObj;
ShapeObj: TYPE = RECORD [
coordSys: CoordSystem,
mo: MasterObject];

ToolData: TYPE = REF ToolDataObj;
ToolDataObj: TYPE = RECORD [
block: FrameBlock,
infinite: BOOL,
plane: NAT,
clientData: REF ANY  -- currently used for Slice objects
];

FrameBlock: TYPE = REF FrameBlockObj;
FrameBlockObj: TYPE = RECORD [
loX, hiX, loY, hiY, loZ, hiZ: REAL];

SliceList: TYPE = REF SliceListObj;
SliceListObj: TYPE = RECORD [
	list: LIST OF Slice,
	pointSetOp: PointSetOp];

FileCamera: TYPE = REF FileCameraObj;
FileCameraObj: TYPE = RECORD [
name: Rope.ROPE,
origin: Point3d,
focusPoint: Point3d,
slant: REAL, -- the slant of the camera counter-clockwise from horizontal in degrees.
resolution: REAL,
focalLength: REAL,
projection: Projection,
frame: FrameBox,
clippingPlanes: LIST OF Plane,
visibleAssemblies: LIST OF Rope.ROPE];
FileCameraList: TYPE = LIST OF FileCamera;
SelectionClass: TYPE = {normal, hot, active};
MasterObject: TYPE = REF MasterObjectRec;
MasterObjectRec: TYPE = RECORD [
name: Rope.ROPE,
class: MasterObjectClass,
mainBody: REF ANY _ NIL,	-- information independent of imaging style
lineBody: REF ANY,
shadeBody: REF ANY,
rayCastBody: REF ANY
];
MasterObjectList: TYPE = LIST OF MasterObject;


PointAndDone: TYPE = RECORD [point: Point3d, done: BOOL];
PointGenerator: TYPE = REF PointGeneratorObj;
PointGeneratorObj: TYPE = RECORD [
sliceD: SliceDescriptor,
toGo: NAT,
index: NAT,
classSpecific: REF ANY
];

SelectMode: TYPE = {literal, joint, controlPoint, segment, segmentRange, traj, slice, topLevel, none};
ExtendMode: TYPE = SelectMode;
PlanarSurface: TYPE = REF PlanarSurfaceObj;
PlanarSurfaceObj: TYPE = RECORD [
whichSurface: REF ANY,
assembly: Slice,
mo: MasterObject,
normal: Vector3d,
depth: REAL];	-- in camera coords which the master object calculates (for now)

PlanarSurfaceList: TYPE = LIST OF PlanarSurface;
MasterObjectClass: TYPE = REF MasterObjectClassObj;
MasterObjectClassObj: TYPE = RECORD [
name: Rope.ROPE,
copy: CopyProc,
getHedron: GetHedronProc, -- a polyhedron the bounds the object
lineDraw: LineDrawProc,
lineDrawTransform: LineDrawTransformProc,
countSurf: CountSurfProc,
getSurf: GetSurfProc,
getSurfTransform: GetSurfTransformProc,
normalsDraw: NormalsDrawProc,
preprocess: PreprocessProc,
rayCast: RayCastProc,
rayCastNoBBoxes: RayCastNoBBoxesProc,
rayCastBoundingSpheres: RayCastBoundingSpheresProc,
drawSurf: DrawPlanarSurfaceProc,
drawSubBoxes: DrawSubBoxesProc,
drawSubSpheres: DrawSubSpheresProc,
transform: TransformProc,
describe: DescribeProc,
describeHit: DescribeHitProc,
filein: FileinProc,
fileout: FileoutProc,
fileoutPoly: FileoutPolyProc,
emptyParts: EmptyPartsProc,
newParts: NewPartsProc,
unionParts: UnionPartsProc,
differenceParts: DifferencePartsProc,
movingParts: MovingPartsProc,
augmentParts: AugmentPartsProc,
pointsInDescriptor: PointsInDescriptorProc,
nextPoint: NextPointProc,
closestPointToPoint: ClosestPointToPointProc,
closestPointToLine: ClosestPointToLineProc,
closestSegmentToPoint: ClosestSegmentToPointProc,
closestSegmentToLine: ClosestSegmentToLineProc,
update: UpdateProc -- change some aspect of the master object, such as how it draws itself
];
MasterObjectClassList: TYPE = LIST OF MasterObjectClass;

CopyProc: TYPE = PROC [mo: MasterObject, newName: Rope.ROPE] RETURNS [newMO: MasterObject];
GetHedronProc: TYPE = PROC [mo: MasterObject] RETURNS [hedron: BoundHedron];
DescribeProc: TYPE = PROC [sliceD: SliceDescriptor] RETURNS [rope: Rope.ROPE];
DescribeHitProc: TYPE = PROC [mo: MasterObject, hitData: REF ANY] RETURNS [rope: Rope.ROPE];
FileinProc: TYPE = PROC [f: IO.STREAM, name: Rope.ROPE, version: REAL] RETURNS [mo: MasterObject];
FileoutProc: TYPE = PROC [f: IO.STREAM, mo: MasterObject];
FileoutPolyProc: TYPE = PROC [f: IO.STREAM, mo: MasterObject];
RayCastProc: TYPE = SVRayTypes.RayCastProc;
RayCastNoBBoxesProc: TYPE = SVRayTypes.RayCastNoBBoxesProc;
RayCastBoundingSpheresProc: TYPE = SVRayTypes.RayCastBoundingSpheresProc;
PreprocessProc: TYPE = PROC [prim: Primitive, camera: Camera];
LineDrawProc: TYPE = PROC[slice: Slice, dc: Imager.Context, camera: Camera];
LineDrawTransformProc: TYPE = PROC[sliceD: SliceDescriptor, dc: Imager.Context, camera: Camera, transform: Matrix4by4];
CountSurfProc: TYPE = PROC [masterObject: MasterObject] RETURNS [len: NAT];
GetSurfProc: TYPE = PROC [slice: Slice, camera: CoordSystem] RETURNS [PlanarSurfaceList];
GetSurfTransformProc: TYPE = PROC [sliceD: SliceDescriptor, camera: CoordSystem, transform: Matrix4by4] RETURNS [PlanarSurfaceList];
NormalsDrawProc: TYPE = PROC[dc: Imager.Context, data: REF ANY, camera: Camera, localCS: CoordSystem];
EmptyPartsProc: TYPE = PROC [sliceD: SliceDescriptor] RETURNS [BOOL];
NewPartsProc: TYPE = PROC [slice: Slice, hitData: REF ANY, hitPoint: Point3d, mode: SelectMode] RETURNS [sliceD: SliceDescriptor];
UnionPartsProc: TYPE = PROC [partsA: SliceDescriptor, partsB: SliceDescriptor] RETURNS [aPlusB: SliceDescriptor];
DifferencePartsProc: TYPE = PROC [partsA: SliceDescriptor, partsB: SliceDescriptor] RETURNS [aMinusB: SliceDescriptor];
MovingPartsProc: TYPE = PROC [slice: Slice, selectedParts: SliceParts] RETURNS [background, overlay, rubber, drag: SliceDescriptor];
AugmentPartsProc: TYPE = PROC [sliceD: SliceDescriptor, selectClass: SelectionClass] RETURNS [more: SliceDescriptor];
ClosestPointToPointProc: TYPE = PROC [sliceD: SliceDescriptor, testPoint: Point3d, criticalR: REAL] RETURNS [bestDist: REAL, pointWORLD: Point3d, hitData: REF ANY, success: BOOL];
ClosestPointToLineProc: TYPE = PROC [sliceD: SliceDescriptor, cameraPoint: Point2d, line3d: Line3d, criticalR: REAL, camera: Camera] RETURNS [bestDist: REAL, pointWORLD: Point3d, hitData: REF ANY, success: BOOL];
ClosestSegmentToPointProc: TYPE = PROC [sliceD: SliceDescriptor, testPoint: Point3d, criticalR: REAL] RETURNS [bestDist: REAL, pointWORLD: Point3d, hitData: REF ANY, success: BOOL];
ClosestSegmentToLineProc: TYPE = PROC [sliceD: SliceDescriptor, cameraPoint: Point2d, line3d: Line3d, criticalR: REAL, camera: Camera] RETURNS [bestDist: REAL, pointWORLD: Point3d, hitData: REF ANY, success: BOOL];
PointsInDescriptorProc: TYPE = PROC [sliceD: SliceDescriptor] RETURNS [PointGenerator];
NextPointProc: TYPE = PROC [pointGen: PointGenerator] RETURNS [pointAndDone: PointAndDone];
DrawPlanarSurfaceProc: TYPE = PROC [dc: Imager.Context, ps: PlanarSurface, lightSources: LightSourceList, camera: Camera];
DrawSubBoxesProc: TYPE = PROC [dc: Imager.Context, prim: Primitive, screenCS: CoordSystem];
DrawSubSpheresProc: TYPE = PROC [dc: Imager.Context, prim: Primitive, camera: Camera];
TransformProc: TYPE = PROC [sliceD: SliceDescriptor, scene: Scene, transform: Matrix4by4];
UpdateProc: TYPE = PROC [mo: MasterObject, updateData: REF ANY];

END.
LFile: SVSceneTypes.mesa
Created July 29, 1984 3:52:37 pm PDT
Copyright c 1984 by Xerox Corporation.  All rights reserved.
Last edited by Bier on May 26, 1987 4:54:35 pm PDT


The assembly mentioned above is known throughout the system as "sceneAssembly".  Translation, scaling and rotation of this assembly effects the entire scene.

Selection Bits
Bounding Boxes
Other Slice Data
Other Solidviews Data
Master Object Types
each object type will have its own way of describing its surfaces
The normal is a surface normal given in local coordinates by each assembly.  It is converted to camera coordinates before it is passed back to master object class code for drawing.

Master Object Class Types
Fundamentals
Drawing
Transforming
Textual Description
Parts
Part Generators
Hit Testing
closestFace: ClosestFaceProc, 
Miscellaneous
Drawing
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