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- // copyright 1993 Michael B. Johnson; some portions copyright 1994, MIT
- // see COPYRIGHT for reuse legalities
- //
-
- #import "RIBScale.h"
-
- @implementation RIBScale
-
- + initialize { return [RIBScale setVersion:1], self; }
-
- - init
- {
- [super init];
- sx = 1.0;
- sy = 1.0;
- sz = 1.0;
-
- N3D_CopyMatrix(N3DIdentityMatrix, myMatrix);
- myMatrix[0][0] = sx;
- myMatrix[1][1] = sy;
- myMatrix[2][2] = sz;
-
- return self;
- }
-
- - awake
- {
- [super awake];
- N3D_CopyMatrix(N3DIdentityMatrix, myMatrix);
-
- myMatrix[0][0] = sx;
- myMatrix[1][1] = sy;
- myMatrix[2][2] = sz;
-
- return self;
- }
-
- - setSX:(RtFloat)newSX sy:(RtFloat)newSY sz:(RtFloat)newSZ
- {
- sx = newSX;
- sy = newSY;
- sz = newSZ;
-
- // prman totally loses its lunch if you give it a scale of 0
- // but if you give it a value of, say, 0.00001, it's okay
- //NXLogError("setting scale to: %f %f %f", sx, sy, sz);
- if (sx == 0)
- { sx = 0.00001;
- }
- if (sy == 0)
- { sy = 0.00001;
- }
- if (sz == 0)
- { sz = 0.00001;
- }
- //N3D_CopyMatrix(N3DIdentityMatrix, myMatrix);
- myMatrix[0][0] = sx;
- myMatrix[1][1] = sy;
- myMatrix[2][2] = sz;
-
- //NXLogError("set scale to: %f %f %f", sx, sy, sz);
- return self;
- }
-
- - getSX:(RtFloat *)sxPtr sy:(RtFloat *)syPtr sz:(RtFloat *)szPtr
- {
- *sxPtr = sx;
- *syPtr = sy;
- *szPtr = sz;
-
- return self;
- }
-
- - (BOOL)isLerpable { return YES; }
-
- // note: because we've made the WWSampleList "safe" for having
- // multiple samples with the same data, it's perfectly valid to return
- // yourself or b
- - lerpWith:b by:(float)uValue
- {
- id newMe = nil;
- RtFloat sxA, syA, szA;
- RtFloat sxB, syB, szB;
-
- if (([self class] != [b class]) || (uValue <= 0.0))
- { return self;
- }
-
- if (uValue >= 1.0)
- { return b;
- }
-
- newMe = [super lerpWith:b by:uValue]; // this makes a copy for us
-
- // okay, now do the specific stuff for this class
- [self getSX:&sxA sy:&syA sz:&szA];
- [b getSX:&sxB sy:&syB sz:&szB];
- [newMe setSX:(sxA + ((sxB - sxA) * uValue))
- sy:(syA + ((syB - syA) * uValue))
- sz:(szA + ((szB - szA) * uValue))];
-
- return newMe;
- }
-
- - lerpSelfWith:b by:(float)uValue
- {
- RtFloat sxA, syA, szA;
- RtFloat sxB, syB, szB;
-
- if (([self class] != [b class]) || (uValue <= 0.0))
- { return self;
- }
-
- if (uValue >= 1.0)
- { return b;
- }
-
- [super lerpSelfWith:b by:uValue]; // this makes a copy for us
-
- // okay, now do the specific stuff for this class
- [self getSX:&sxA sy:&syA sz:&szA];
- [b getSX:&sxB sy:&syB sz:&szB];
- [self setSX:(sxA + ((sxB - sxA) * uValue))
- sy:(syA + ((syB - syA) * uValue))
- sz:(szA + ((szB - szA) * uValue))];
-
- return self;
- }
-
- - (BOOL)isMoot
- {
- if ((sx == 1.0) && (sy == 1.0) && (sz == 1.0)) { return YES; }
- return NO;
- }
-
- - (BOOL)theSameAs:otherRIBCommand
- {
- RtFloat theSX, theSY, theSZ;
-
-
- [otherRIBCommand getSX:&theSX sy:&theSY sz:&theSZ];
- if (sx != theSX)
- { return NO;
- }
- if (sy != theSY)
- { return NO;
- }
- if (sz != theSZ)
- { return NO;
- }
-
- return [super theSameAs:otherRIBCommand];
- }
-
-
- - renderSelf:(WW3DCamera *)camera startingAt:(RtFloat)shutterOpenTime endingAt:(RtFloat)shutterCloseTime
- {
- RiScale(sx, sy, sz);
-
- return self;
- }
-
- - transformCTM:(WW3DAttributeState *)attributeState startingAt:(RtFloat)shutterOpenTime endingAt:(RtFloat)shutterCloseTime
- {
- RtMatrix aMatrix, tmpMatrix;
-
- [attributeState getTransformMatrix:aMatrix];
- N3DMultiplyMatrix(myMatrix, aMatrix, tmpMatrix);
- [attributeState setTransformMatrix:tmpMatrix];
-
- //NXLogError("RIBScale myMatrix (-transformCTM:startingAt:endingAt):\n");
- //NXLogError("\t%f %f %f %f\n", myMatrix[0][0], myMatrix[0][1], myMatrix[0][2], myMatrix[0][3]);
- //NXLogError("\t%f %f %f %f\n", myMatrix[1][0], myMatrix[1][1], myMatrix[1][2], myMatrix[1][3]);
- //NXLogError("\t%f %f %f %f\n", myMatrix[2][0], myMatrix[2][1], myMatrix[2][2], myMatrix[2][3]);
- //NXLogError("\t%f %f %f %f\n", myMatrix[3][0], myMatrix[3][1], myMatrix[3][2], myMatrix[3][3]);
- //NXLogError("RIBScale aMatrix (-transformCTM:startingAt:endingAt):\n");
- //NXLogError("\t%f %f %f %f\n", aMatrix[0][0], aMatrix[0][1], aMatrix[0][2], aMatrix[0][3]);
- //NXLogError("\t%f %f %f %f\n", aMatrix[1][0], aMatrix[1][1], aMatrix[1][2], aMatrix[1][3]);
- //NXLogError("\t%f %f %f %f\n", aMatrix[2][0], aMatrix[2][1], aMatrix[2][2], aMatrix[2][3]);
- //NXLogError("\t%f %f %f %f\n", aMatrix[3][0], aMatrix[3][1], aMatrix[3][2], aMatrix[3][3]);
-
- return self;
- }
-
- - (BOOL)isMotionBlurrable { return YES; }
-
- - writeEve:(NXStream *)stream atTabLevel:(int)tab
- {
- int i;
-
-
- for (i = 0; i < tab; i++)
- { NXPrintf(stream, "\t");
- }
- NXPrintf(stream, "Scale %g %g %g;", sx, sy, sz);
- return self;
- }
-
- - writeInventorAtTime:(float)currentTime to:(NXStream *)stream atTabLevel:(int)tab
- {
- int i;
-
-
- for (i = 0; i < tab; i++)
- { NXPrintf(stream, "\t");
- }
- NXPrintf(stream, "Scale {\n");
- for (i = 0; i < (tab+1); i++)
- { NXPrintf(stream, "\t");
- }
- NXPrintf(stream, "scaleFactor %g %g %g\n", sx, sy, sz);
- for (i = 0; i < tab; i++)
- { NXPrintf(stream, "\t");
- }
- NXPrintf(stream, "}");
-
- return self;
-
- }
- #define typeVector "fff"
- #define typeValues &sx, &sy, &sz
-
- - read:(NXTypedStream*)stream
- {
- int version;
- [super read:stream];
-
- NX_DURING
- version = NXTypedStreamClassVersion(stream,"RIBScale");
- if (version == 0) NXReadTypes(stream,"i",&version), version=1;
- if (version == 1)
- { NXReadTypes(stream,typeVector,typeValues);
- }
- NX_HANDLER
- NXLogError("in read: %s, exception [%d] raised.\n",
- [[self class] name], NXLocalHandler.code);
- return nil;
- NX_ENDHANDLER
- return self;
- }
-
- - write:(NXTypedStream*)stream
- {
- [super write:stream];
-
- NXWriteTypes(stream,typeVector, typeValues);
-
- return self;
- }
-
- @end
-
-