Copyright (C) 1994, Digital Equipment Corp.
Created on Tue Jan 19 14:00:00 PST 1994 by najork
MODULE ObSphereGO;
IMPORT ObAux, ObCommand, ObGO, ObInt, ObLib, ObPointProp, ObProp,
ObProtoLoader, ObRealProp, ObSurfaceGO, ObValue, Obliq, ProxiedObj,
SphereGO, SphereGOProxy, SynLocation;
CONST
pkgname = "SphereGO";
***************************************************************************
Wrapper for SphereGO.T
***************************************************************************
TYPE
T = ObSurfaceGO.T BRANDED "ObSphereGO.T" OBJECT END;
PROCEDURE AddTObj (sphere : SphereGO.T) =
<* FATAL ObValue.Error, ObValue.Exception *>
BEGIN
WITH obj = Obliq.ObjectClone (Obliq.Vals {TProto}),
raw = NEW (T, what := "<a SphereGO.T>", po := sphere) DO
Obliq.ObjectUpdate (obj, "raw", raw);
sphere.proxy := NEW (ProxiedObj.Proxy, obj := obj);
END;
END AddTObj;
***************************************************************************
Setup procedures
***************************************************************************
PROCEDURE SetupPackage () =
PROCEDURE NewOpCode (name: TEXT; arity: INTEGER; code: Code) : OpCode =
BEGIN
RETURN NEW (OpCode, name := name, arity := arity, code := code);
END NewOpCode;
TYPE
OpCodes = ARRAY OF ObLib.OpCode;
VAR
opCodes: REF OpCodes;
BEGIN
opCodes := NEW (REF OpCodes, NUMBER (Code));
opCodes^ :=
OpCodes {
NewOpCode ("New", 2, Code.New),
NewOpCode ("NewWithPrec", 3, Code.NewWithPrec),
NewOpCode ("Center", -1, Code.Center),
NewOpCode ("Radius", -1, Code.Radius),
NewOpCode ("SetCenter", 2, Code.SetCenter),
NewOpCode ("SetRadius", 2, Code.SetRadius)
};
ObLib.Register (NEW (Package, name := pkgname, opCodes := opCodes));
ObLib.RegisterHelp (pkgname, Help);
(* DONT KNOW YET WHETHER TO INHIBIT TRANSMISSIONS ... *)
END SetupPackage;
VAR
TProto : ObValue.Val;
PROCEDURE SetupModule (loader : ObProtoLoader.T) =
BEGIN
(*** Retrieve the prototype ***)
loader.load ("SphereGO.obl");
TProto := loader.get ("SphereGO_TProto");
(*** Register the proxy maker ***)
SphereGOProxy.MkProxyT := AddTObj;
END SetupModule;
***************************************************************************
Execution machinery
***************************************************************************
TYPE
Code = {New, NewWithPrec, Center, Radius, SetCenter, SetRadius};
OpCode = ObLib.OpCode OBJECT
code: Code;
END;
Package = ObLib.T OBJECT
OVERRIDES
Eval := DoEval;
END;
PROCEDURE DoEval (self : Package;
opCode : ObLib.OpCode;
<* UNUSED *> arity : ObLib.OpArity;
READONLY args: ObValue.ArgArray;
<* UNUSED *> temp : BOOLEAN;
loc : SynLocation.T) : ObValue.Val
RAISES {ObValue.Error, ObValue.Exception} =
BEGIN
CASE NARROW (opCode, OpCode).code OF
| Code.New =>
WITH p = ObPointProp.GetOverloadedVal (args, 1, self, opCode, loc),
r = ObRealProp.GetOverloadedVal (args, 2, self, opCode, loc),
sphere = NEW (SphereGO.T).init () DO
sphere.setProp (SphereGO.Center.bind (p));
sphere.setProp (SphereGO.Radius.bind (r));
RETURN sphere.proxy.obj;
END;
| Code.NewWithPrec =>
WITH p = ObPointProp.GetOverloadedVal (args, 1, self, opCode, loc),
r = ObRealProp.GetOverloadedVal (args, 2, self, opCode, loc),
prec = ObInt.GetArg (args, 3, self, opCode, loc),
sphere = NEW (SphereGO.T).init (prec) DO
sphere.setProp (SphereGO.Center.bind (p));
sphere.setProp (SphereGO.Radius.bind (r));
RETURN sphere.proxy.obj;
END;
| Code.Center =>
RETURN ObProp.NameToObliq (SphereGO.Center);
| Code.Radius =>
RETURN ObProp.NameToObliq (SphereGO.Radius);
| Code.SetCenter =>
WITH go = ObGO.GetArg (args, 1, self, opCode, loc),
p = ObPointProp.GetOverloadedVal (args, 2, self, opCode, loc) DO
go.setProp (SphereGO.Center.bind (p));
RETURN ObValue.valOk;
END;
| Code.SetRadius =>
WITH go = ObGO.GetArg (args, 1, self, opCode, loc),
r = ObRealProp.GetOverloadedVal (args, 2, self, opCode, loc) DO
go.setProp (SphereGO.Radius.bind (r));
RETURN ObValue.valOk;
END;
END;
END DoEval;
***************************************************************************
Help
***************************************************************************
PROCEDURE Help (self : ObCommand.T; arg : TEXT; <* UNUSED *> data : REFANY) =
BEGIN
ObAux.Help (self, arg, pkgname);
END Help;
BEGIN
END ObSphereGO.