FCurveKey.Time値を基準としたF カーブキーの左タンジェントX(フレーム)をDoubleとして設定したり、戻したりします。
左タンジェントX値は、2 つの連続するキー間の距離の 1/3から 0までの負の値をとることができます。この範囲の値の場合は、カーブが有効であることが保証されます。
最初のキーの左タンジェントおよび最後のキーの右タンジェントは変更できません。変更できないこれらのタンジェントを設定しようとした場合、プロパティでは何も行われず、C++でS_FLSE が戻されます。
タンジェント値は、標準 F カーブ(FCurve.Type = siStandardFCurve)にのみ適用されます。siFCurveType で定義されているその他すべての F カーブに対しては、タンジェント値 0 が戻されます。
// get accessor Object rtn = FCurveKey.LeftTanX; // set accessor FCurveKey.LeftTanX = Object; |
/* This example illustrates how to create an fcurve and set the tangents on a specific key */ // Create new scene NewScene( "", false ); // Create a null var nullobj = Application.ActiveSceneRoot.AddNull(); // Get the posx parameter from the null var posx = nullobj.posx; // Create an fcurve on posx var fc = posx.AddFCurve2(); // Define some keys (3 key-value pairs) var keyvalues = new Array( 0,0, 50,25, 100,50 ); fc.SetKeys( keyvalues ); // Get the 1st, 2nd & 3rd FCurveKey objects var key0 = fc.Keys(0); var key1 = fc.Keys(1); var key2 = fc.Keys(2); // Make the key non-G1 continuous so it can have different left and right values key1.Constraint( siG1ContinuousConstraint ) = false; key1.LeftTanX = 0; key1.LeftTanY = Math.abs( key1.Value - key0.Value ); key1.RightTanX = key2.Time - key1.Time; key1.RightTanY = 0; PrintKeys( fc ); // Convenience function to print the FCurveKeys function PrintKeys( in_fcrv ) { for ( var i=0; i<in_fcrv.Keys.Count; i++ ) { var fckey = in_fcrv.Keys(i); var str = "key : " + fckey.Index; str += "\n\ttime : " + fckey.Time; str += "\n\tvalue : " + fckey.Value; str += "\n\ttangents : " + fckey.LeftTanX + "," + fckey.LeftTanY + "," + fckey.RightTanX + "," + fckey.RightTanY; str += "\n\tconstraints : " + GetConstraintType( fckey ); Application.LogMessage( str ); } } // Convenience function to get the user-friendly string describing the contraint type function GetConstraintType( in_fcrvkey ) { var ConstraintTypes = new Array ( new Array (siParameterConstraint, "LockParameter"), new Array (siLeftRightValuesConstraint, "LeftRightParameter"), new Array (siG1ContinuousConstraint, "G1Continuous"), new Array (siLeftRightTangentDirectionConstraint, "LeftRightTangentDirection"), new Array (siLeftRightTangentLengthConstraint, "LeftRightTangentLength"), new Array (siLockConstraint, "LockAll"), new Array (siHorizontalTangentConstraint, "HorizontalTangent"), new Array (siExtremumHorizontalTangentConstraint, "ExtremumHorizontalTangent"), new Array (siAdjustedTangentConstraint, "AdjustedTangent"), new Array (siZeroLengthTangentConstraint, "ZeroLengthTangent"), new Array (siSameLengthTangentConstraint, "SameLengthTangent"), new Array (siNeighborTangentConstraint, "NeighborTangent"), new Array (siMirrorTangentConstraint, "MirrorTangent"), new Array (siAutoPlateauTangentConstraint, "AutoPlateauTangent") ) var str = ""; for ( var i=0; i<ConstraintTypes.length; i++ ) { if ( in_fcrvkey.Constraint( ConstraintTypes[i][0] ) ) { str += ConstraintTypes[i][1] + " "; } } return str; } // Expected results: //INFO : key : 0 // time : 0 // value : 0 // tangents : -16.666666666666668,0,16.666666666666668,0 // constraints : G1Continuous //INFO : key : 1 // time : 50 // value : 25 // tangents : 0,25,50,0 // constraints : //INFO : key : 2 // time : 100 // value : 50 // tangents : -16.666666666666664,0,16.666666666666664,0 // constraints : G1Continuous |
' ' This example illustrates how to create an fcurve and set the tangents on a specific key ' ' Create new scene NewScene , false ' Create a null set nullobj = Application.ActiveSceneRoot.AddNull() ' Get the posx parameter from the null set posx = nullobj.posx ' Create an fcurve on posx set fc = posx.AddFCurve2() ' Define some keys (3 key-value pairs) keyvalues = array( 0,0, 50,25, 100,50 ) fc.SetKeys keyvalues ' Get the 1st, 2nd & 3rd FCurveKey objects set key0 = fc.Keys(0) set key1 = fc.Keys(1) set key2 = fc.Keys(2) ' Make the key non-G1 continuous so it can have different left and right values key1.Constraint( siG1ContinuousConstraint ) = false key1.LeftTanX = 0 key1.LeftTanY = Abs( key1.Value - key0.Value ) key1.RightTanX = key2.Time - key1.Time key1.RightTanY = 0 PrintKeys fc ' Convenience routine to print the FCurveKeys sub PrintKeys( in_fcrv ) for each fckey in in_fcrv.Keys str = "key : " & fckey.Index str = str & vbCrLf & vbTab & "time : " & fckey.Time str = str & vbCrLf & vbTab & "value : " & fckey.Value str = str & vbCrLf & vbTab & "tangents : " & fckey.LeftTanX & "," & fckey.LeftTanY & "," & fckey.RightTanX & "," & fckey.RightTanY str = str & vbCrLf & vbTab & "constraints : " & GetConstraintType( fckey ) Application.LogMessage str next end sub ' Convenience function to get the user-friendly string describing the contraint type function GetConstraintType( in_fcrvkey ) set ConstraintTypes = CreateObject( "Scripting.Dictionary" ) ConstraintTypes.Add siParameterConstraint, "LockParameter" ConstraintTypes.Add siLeftRightValuesConstraint, "LeftRightParameter" ConstraintTypes.Add siG1ContinuousConstraint, "G1Continuous" ConstraintTypes.Add siLeftRightTangentDirectionConstraint, "LeftRightTangentDirection" ConstraintTypes.Add siLeftRightTangentLengthConstraint, "LeftRightTangentLength" ConstraintTypes.Add siLockConstraint, "LockAll" ConstraintTypes.Add siHorizontalTangentConstraint, "HorizontalTangent" ConstraintTypes.Add siExtremumHorizontalTangentConstraint, "ExtremumHorizontalTangent" ConstraintTypes.Add siAdjustedTangentConstraint, "AdjustedTangent" ConstraintTypes.Add siZeroLengthTangentConstraint, "ZeroLengthTangent" ConstraintTypes.Add siSameLengthTangentConstraint, "SameLengthTangent" ConstraintTypes.Add siNeighborTangentConstraint, "NeighborTangent" ConstraintTypes.Add siMirrorTangentConstraint, "MirrorTangent" ConstraintTypes.Add siAutoPlateauTangentConstraint, "AutoPlateauTangent" str = "" for each k in ConstraintTypes.Keys if in_fcrvkey.Constraint( k ) then str = str & ConstraintTypes(k) & " " end if next GetConstraintType = str end function ' Expected results: 'INFO : key : 0 ' time : 0 ' value : 0 ' tangents : -16.6666666666667,0,16.6666666666667,0 ' constraints : G1Continuous 'INFO : key : 1 ' time : 50 ' value : 25 ' tangents : 0,25,50,0 ' constraints : 'INFO : key : 2 ' time : 100 ' value : 50 ' tangents : -16.6666666666667,0,16.6666666666667,0 ' constraints : G1Continuous |
# # This example illustrates how to create an fcurve and set the tangents on a specific key # from win32com.client import constants as c # Convenience function to get the user-friendly string describing the contraint type def GetConstraintType( in_fcrvkey ) : ConstraintTypes = { c.siParameterConstraint:"LockParameter", c.siLeftRightValuesConstraint:"LeftRightParameter", c.siG1ContinuousConstraint:"G1Continuous", c.siLeftRightTangentDirectionConstraint:"LeftRightTangentDirection", c.siLeftRightTangentLengthConstraint:"LeftRightTangentLength", c.siLockConstraint:"LockAll", c.siHorizontalTangentConstraint:"HorizontalTangent", c.siExtremumHorizontalTangentConstraint:"ExtremumHorizontalTangent", c.siAdjustedTangentConstraint:"AdjustedTangent", c.siZeroLengthTangentConstraint:"ZeroLengthTangent", c.siSameLengthTangentConstraint:"SameLengthTangent", c.siNeighborTangentConstraint:"NeighborTangent", c.siMirrorTangentConstraint:"MirrorTangent", c.siAutoPlateauTangentConstraint:"AutoPlateauTangent" } str = "" for k in ConstraintTypes.keys() : if ( in_fcrvkey.Constraint(k) ) : str += ConstraintTypes[k] + " " return str # Convenience function to print the FCurveKeys def PrintKeys( in_fcrv ) : for fckey in in_fcrv.Keys : str = "key : %d" % (fckey.Index) str = str + "\n\ttime : %d" % (fckey.Time) str = str + "\n\tvalue : %d" % (fckey.Value) str = str + "\n\ttangents : %d,%d,%d,%d" % (fckey.LeftTanX,fckey.LeftTanY,fckey.RightTanX,fckey.RightTanY) str = str + "\n\tconstraints : " + GetConstraintType( fckey ) Application.LogMessage( str ) return None # Create new scene Application.NewScene( "", 0 ) # Create a null nullobj = Application.ActiveSceneRoot.AddNull() # Get the posx parameter from the null posx = nullobj.posx # Create an fcurve on posx fc = posx.AddFCurve2() # Define some keys (3 key-value pairs) keyvalues = [ 0,0, 50,25, 100,50 ] fc.SetKeys( keyvalues ) # Get the 1st, 2nd & 3rd FCurveKey objects key0 = fc.Keys(0) key1 = fc.Keys(1) key2 = fc.Keys(2) # Make the key non-G1 continuous so it can have different left and right values # (Python can't use the Constraint property as-is, so use SetConstraint as an alias) key1.SetConstraint( c.siG1ContinuousConstraint, 0 ) key1.LeftTanX = 0 key1.LeftTanY = abs( key1.Value - key0.Value ) key1.RightTanX = key2.Time - key1.Time key1.RightTanY = 0 PrintKeys( fc ) # Expected results: # INFO : key : 0 # time : 0 # value : 0 # tangents : -16,0,16,0 # constraints : G1Continuous # INFO : key : 1 # time : 50 # value : 25 # tangents : 0,25,50,0 # constraints : # INFO : key : 2 # time : 100 # value : 50 # tangents : -16,0,16,0 # constraints : G1Continuous |