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Matrix2x3Plugin.class.st
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Matrix2x3Plugin.class.st
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Class {
#name : #Matrix2x3Plugin,
#superclass : #InterpreterPlugin,
#instVars : [
'm23ResultX',
'm23ResultY',
'm23ArgX',
'm23ArgY'
],
#category : #'VMMaker-Plugins'
}
{ #category : #'class initialization' }
Matrix2x3Plugin class >> declareCVarsIn: cg [
cg var: #m23ResultX type: #double.
cg var: #m23ResultY type: #double.
cg var: #m23ArgX type: #double.
cg var: #m23ArgY type: #double
]
{ #category : #simulation }
Matrix2x3Plugin class >> simulatorClass [
^Matrix2x3PluginSimulator
]
{ #category : #private }
Matrix2x3Plugin >> loadArgumentMatrix: matrix [
"Load the argument matrix"
<returnTypeC: #'float *'>
<inline: #always>
((interpreterProxy isWords: matrix) and: [(interpreterProxy slotSizeOf: matrix) = 6]) ifFalse:
[interpreterProxy primitiveFail.
^nil].
^self cCoerce: (interpreterProxy firstIndexableField: matrix) to: #'float *'
]
{ #category : #private }
Matrix2x3Plugin >> loadArgumentPoint: point [
"Load the argument point into m23ArgX and m23ArgY"
| oop |
"Check class of point"
(interpreterProxy fetchClassOf: point) = interpreterProxy classPoint ifFalse:
[^interpreterProxy primitiveFail].
"Load X value"
oop := interpreterProxy fetchPointer: 0 ofObject: point.
(interpreterProxy isIntegerObject: oop)
ifTrue: [m23ArgX := interpreterProxy integerValueOf: oop]
ifFalse:
[(interpreterProxy isFloatObject: oop)
ifTrue: [m23ArgX := interpreterProxy floatValueOf: oop]
ifFalse: [interpreterProxy primitiveFail]].
"Load Y value"
oop := interpreterProxy fetchPointer: 1 ofObject: point.
(interpreterProxy isIntegerObject: oop)
ifTrue: [m23ArgY := interpreterProxy integerValueOf: oop]
ifFalse:
[(interpreterProxy isFloatObject: oop)
ifTrue: [m23ArgY := interpreterProxy floatValueOf: oop]
ifFalse: [interpreterProxy primitiveFail]]
]
{ #category : #transforming }
Matrix2x3Plugin >> matrix2x3ComposeMatrix: m1 with: m2 into: m3 [
"Multiply matrix m1 with m2 and store the result into m3."
| a11 a12 a13 a21 a22 a23 |
<var: #m1 type: #'const float *'>
<var: #m2 type: #'const float *'>
<var: #m3 type: #'float *'>
<var: #a11 type: #double>
<var: #a12 type: #double>
<var: #a13 type: #double>
<var: #a21 type: #double>
<var: #a22 type: #double>
<var: #a23 type: #double>
a11 := ((m1 at: 0) * (m2 at: 0)) + ((m1 at: 1) * (m2 at: 3)).
a12 := ((m1 at: 0) * (m2 at: 1)) + ((m1 at: 1) * (m2 at: 4)).
a13 := ((m1 at: 0) * (m2 at: 2)) + ((m1 at: 1) * (m2 at: 5)) + (m1 at: 2).
a21 := ((m1 at: 3) * (m2 at: 0)) + ((m1 at: 4) * (m2 at: 3)).
a22 := ((m1 at: 3) * (m2 at: 1)) + ((m1 at: 4) * (m2 at: 4)).
a23 := ((m1 at: 3) * (m2 at: 2)) + ((m1 at: 4) * (m2 at: 5)) + (m1 at: 5).
m3 at: 0 put: (self cCoerce: a11 to: #float).
m3 at: 1 put: (self cCoerce: a12 to: #float).
m3 at: 2 put: (self cCoerce: a13 to: #float).
m3 at: 3 put: (self cCoerce: a21 to: #float).
m3 at: 4 put: (self cCoerce: a22 to: #float).
m3 at: 5 put: (self cCoerce: a23 to: #float)
]
{ #category : #transforming }
Matrix2x3Plugin >> matrix2x3InvertPoint: m [
"Invert the pre-loaded argument point by the given matrix"
| x y det detX detY |
<var: #m type: 'float *'>
<var: #x type: 'double '>
<var: #y type: 'double '>
<var: #det type: 'double '>
<var: #detX type: 'double '>
<var: #detY type: 'double '>
x := m23ArgX - (m at: 2).
y := m23ArgY - (m at: 5).
det := ((m at: 0) * (m at: 4)) - ((m at: 1) * (m at: 3)).
det = 0.0 ifTrue:[^interpreterProxy primitiveFail]."Matrix is singular."
det := 1.0 / det.
detX := (x * (m at: 4)) - ((m at: 1) * y).
detY := ((m at: 0) * y) - (x * (m at: 3)).
m23ResultX := detX * det.
m23ResultY := detY * det.
]
{ #category : #transforming }
Matrix2x3Plugin >> matrix2x3TransformPoint: m [
"Transform the pre-loaded argument point by the given matrix"
<var: #m type: 'float *'>
m23ResultX := (m23ArgX * (m at: 0)) + (m23ArgY * (m at: 1)) + (m at: 2).
m23ResultY := (m23ArgX * (m at: 3)) + (m23ArgY * (m at: 4)) + (m at: 5).
]
{ #category : #private }
Matrix2x3Plugin >> okayIntValue: value [
^(value >= interpreterProxy minSmallInteger asFloat
and: [value <= interpreterProxy maxSmallInteger asFloat])
]
{ #category : #primitives }
Matrix2x3Plugin >> primitiveComposeMatrix [
<export: true>
| m1 m2 m3 result |
<var: #m1 type: #'float *'>
<var: #m2 type: #'float *'>
<var: #m3 type: #'float *'>
m3 := self loadArgumentMatrix: (result := interpreterProxy stackValue: 0).
m2 := self loadArgumentMatrix: (interpreterProxy stackValue: 1).
m1 := self loadArgumentMatrix: (interpreterProxy stackValue: 2).
interpreterProxy failed ifFalse:
[self matrix2x3ComposeMatrix: m1 with: m2 into: m3.
interpreterProxy pop: 3 thenPush: result]
]
{ #category : #primitives }
Matrix2x3Plugin >> primitiveInvertPoint [
<export: true>
| matrix |
<var: #matrix type: #'float *'>
self loadArgumentPoint: (interpreterProxy stackValue: 0).
matrix := self loadArgumentMatrix: (interpreterProxy stackValue: 1).
interpreterProxy failed ifTrue:[^nil].
self matrix2x3InvertPoint: matrix.
interpreterProxy failed ifFalse:[self roundAndStoreResultPoint: 2]
]
{ #category : #primitives }
Matrix2x3Plugin >> primitiveInvertRectInto [
<export: true>
| matrix srcOop dstOop originX originY cornerX cornerY minX maxX minY maxY |
<var: #matrix type: #'float *'>
<var: #originX type: #double>
<var: #originY type: #double>
<var: #cornerX type: #double>
<var: #cornerY type: #double>
<var: #minX type: #double>
<var: #maxX type: #double>
<var: #minY type: #double>
<var: #maxY type: #double>
dstOop := interpreterProxy stackValue: 0.
srcOop := interpreterProxy stackValue: 1.
matrix := self loadArgumentMatrix: (interpreterProxy stackValue: 2).
(matrix notNil
and: [(interpreterProxy fetchClassOf: srcOop) = (interpreterProxy fetchClassOf: dstOop)
and: [(interpreterProxy isPointers: srcOop)
and: [(interpreterProxy slotSizeOf: srcOop) = 2]]]) ifFalse:
[^interpreterProxy primitiveFail].
"Load top-left point"
self loadArgumentPoint: (interpreterProxy fetchPointer: 0 ofObject: srcOop).
interpreterProxy failed ifTrue: [^nil].
originX := m23ArgX.
originY := m23ArgY.
self matrix2x3InvertPoint: matrix.
minX := maxX := m23ResultX.
minY := maxY := m23ResultY.
"Load bottom-right point"
self loadArgumentPoint: (interpreterProxy fetchPointer: 1 ofObject: srcOop).
interpreterProxy failed ifTrue: [^nil].
cornerX := m23ArgX.
cornerY := m23ArgY.
self matrix2x3InvertPoint: matrix.
minX := minX min: m23ResultX.
maxX := maxX max: m23ResultX.
minY := minY min: m23ResultY.
maxY := maxY max: m23ResultY.
"Load top-right point"
m23ArgX := cornerX.
m23ArgY := originY.
self matrix2x3InvertPoint: matrix.
minX := minX min: m23ResultX.
maxX := maxX max: m23ResultX.
minY := minY min: m23ResultY.
maxY := maxY max: m23ResultY.
"Load bottom-left point"
m23ArgX := originX.
m23ArgY := cornerY.
self matrix2x3InvertPoint: matrix.
minX := minX min: m23ResultX.
maxX := maxX max: m23ResultX.
minY := minY min: m23ResultY.
maxY := maxY max: m23ResultY.
dstOop := self roundAndStoreResultRect: dstOop x0: minX y0: minY x1: maxX y1: maxY.
interpreterProxy failed ifFalse:
[interpreterProxy pop: 3 thenPush: dstOop]
]
{ #category : #primitives }
Matrix2x3Plugin >> primitiveIsIdentity [
<export: true>
| matrix |
<var: #matrix type: #'float *'>
matrix := self loadArgumentMatrix: (interpreterProxy stackValue: 0).
interpreterProxy failed ifFalse:
[interpreterProxy methodReturnBool:(
((matrix at: 0) = (self cCoerce: 1.0 to: #float)) &
((matrix at: 1) = (self cCoerce: 0.0 to: #float)) &
((matrix at: 2) = (self cCoerce: 0.0 to: #float)) &
((matrix at: 3) = (self cCoerce: 0.0 to: #float)) &
((matrix at: 4) = (self cCoerce: 1.0 to: #float)) &
((matrix at: 5) = (self cCoerce: 0.0 to: #float)))]
]
{ #category : #primitives }
Matrix2x3Plugin >> primitiveIsPureTranslation [
<export: true>
| matrix |
<var: #matrix type: #'float *'>
matrix := self loadArgumentMatrix: (interpreterProxy stackValue: 0).
interpreterProxy failed ifFalse:
[interpreterProxy methodReturnBool:(
((matrix at: 0) = (self cCoerce: 1.0 to: #float)) &
((matrix at: 1) = (self cCoerce: 0.0 to: #float)) &
((matrix at: 3) = (self cCoerce: 0.0 to: #float)) &
((matrix at: 4) = (self cCoerce: 1.0 to: #float)))]
]
{ #category : #primitives }
Matrix2x3Plugin >> primitiveTransformPoint [
<export: true>
| matrix |
<var: #matrix type: #'float *'>
self loadArgumentPoint: (interpreterProxy stackValue: 0).
matrix := self loadArgumentMatrix: (interpreterProxy stackValue: 1).
interpreterProxy failed ifFalse:
[self matrix2x3TransformPoint: matrix.
self roundAndStoreResultPoint: 2]
]
{ #category : #primitives }
Matrix2x3Plugin >> primitiveTransformRectInto [
<export: true>
| matrix srcOop dstOop originX originY cornerX cornerY minX maxX minY maxY |
<var: #matrix type: #'float *'>
<var: #originX type: #double>
<var: #originY type: #double>
<var: #cornerX type: #double>
<var: #cornerY type: #double>
<var: #minX type: #double>
<var: #maxX type: #double>
<var: #minY type: #double>
<var: #maxY type: #double>
dstOop := interpreterProxy stackValue: 0.
srcOop := interpreterProxy stackValue: 1.
matrix := self loadArgumentMatrix: (interpreterProxy stackValue: 2).
(matrix notNil
and: [(interpreterProxy fetchClassOf: srcOop) = (interpreterProxy fetchClassOf: dstOop)
and: [(interpreterProxy isPointers: srcOop)
and: [(interpreterProxy slotSizeOf: srcOop) = 2]]]) ifFalse:
[^interpreterProxy primitiveFail].
"Load top-left point"
self loadArgumentPoint: (interpreterProxy fetchPointer: 0 ofObject: srcOop).
interpreterProxy failed ifTrue:[^nil].
originX := m23ArgX.
originY := m23ArgY.
self matrix2x3TransformPoint: matrix.
minX := maxX := m23ResultX.
minY := maxY := m23ResultY.
"Load bottom-right point"
self loadArgumentPoint:(interpreterProxy fetchPointer: 1 ofObject: srcOop).
interpreterProxy failed ifTrue:[^nil].
cornerX := m23ArgX.
cornerY := m23ArgY.
self matrix2x3TransformPoint: matrix.
minX := minX min: m23ResultX.
maxX := maxX max: m23ResultX.
minY := minY min: m23ResultY.
maxY := maxY max: m23ResultY.
"Load top-right point"
m23ArgX := cornerX.
m23ArgY := originY.
self matrix2x3TransformPoint: matrix.
minX := minX min: m23ResultX.
maxX := maxX max: m23ResultX.
minY := minY min: m23ResultY.
maxY := maxY max: m23ResultY.
"Load bottom-left point"
m23ArgX := originX.
m23ArgY := cornerY.
self matrix2x3TransformPoint: matrix.
minX := minX min: m23ResultX.
maxX := maxX max: m23ResultX.
minY := minY min: m23ResultY.
maxY := maxY max: m23ResultY.
dstOop := self roundAndStoreResultRect: dstOop x0: minX y0: minY x1: maxX y1: maxY.
interpreterProxy failed ifFalse:
[interpreterProxy pop: 3 thenPush: dstOop]
]
{ #category : #private }
Matrix2x3Plugin >> roundAndStoreResultPoint: nItemsToPop [
"Store the result of a previous operation.
Fail if we cannot represent the result as SmallInteger"
m23ResultX := m23ResultX + 0.5.
m23ResultY := m23ResultY + 0.5.
((self okayIntValue: m23ResultX)
and: [self okayIntValue: m23ResultY]) ifFalse:
[^interpreterProxy primitiveFail].
interpreterProxy
pop: nItemsToPop
thenPush: (interpreterProxy
makePointwithxValue: m23ResultX asInteger
yValue: m23ResultY asInteger)
]
{ #category : #private }
Matrix2x3Plugin >> roundAndStoreResultRect: dstOop x0: x0 y0: y0 x1: x1 y1: y1 [
"Check, round and store the result of a rectangle operation"
<var: #x0 type: #double>
<var: #y0 type: #double>
<var: #x1 type: #double>
<var: #y1 type: #double>
| minX maxX minY maxY originOop cornerOop |
<var: #minX type: #double>
<var: #maxX type: #double>
<var: #minY type: #double>
<var: #maxY type: #double>
((self okayIntValue: (minX := x0 + 0.5))
and: [(self okayIntValue: (maxX := x1 + 0.5))
and: [(self okayIntValue: (minY := y0 + 0.5))
and: [self okayIntValue: (maxY := y1 + 0.5)]]]) ifFalse:
[^interpreterProxy primitiveFail].
self remapOop: dstOop in:
[originOop := interpreterProxy makePointwithxValue: minX asInteger yValue: minY asInteger.
self remapOop: originOop in:
[cornerOop := interpreterProxy makePointwithxValue: maxX asInteger yValue: maxY asInteger]].
interpreterProxy
storePointer: 0 ofObject: dstOop withValue: originOop;
storePointer: 1 ofObject: dstOop withValue: cornerOop.
^dstOop
]