| java.lang.Object
 com.sun.j3d.utils.behaviors.interpolators.KBCubicSplineSegment
| KBCubicSplineSegment | | public class KBCubicSplineSegment (Code) | | The KBCubicSplineSegment class creates the representation of a
Kochanek-Bartel's (also known as the TCB or Tension-Continuity-Bias
Spline. This class takes 4 key frames as its input (using KBKeyFrame).
If interpolating between the ith and (i+1)th key
frame then the four key frames that need to be specified are the
(i-1)th, ith, (i+1)th
and (i+2)th keyframes in order. The KBCubicSegmentClass
then pre-computes the hermite interpolation basis coefficients if the
(i+1)th frame has the linear flag set to zero. These are used to
calculate the interpolated position, scale and quaternions when they
requested by the user using the getInterpolated* methods. If the the
(i+1)th frame's linear flag is set to 1 then the class uses
linear interpolation to calculate the interpolated position, scale, heading
pitch and bank it returns through the getInterpolated* methods.
since:
Java3D 1.2 |
| Method Summary | |
| public float | computeLength(float u)
Computes the length of the curve at a given point between
key frames.
Parameters:
u - specifies the point between keyframes where 0 <= u <= 1. | | public float | getInterpolatedBank(float u)
Computes the interpolated bank along the curve at a given point
between key frames and returns the interpolated value as a float
This routine uses linear interpolation if the (i+1)th
key frame's linear value is equal to 1.
Parameters:
u - specifies the point between keyframes where 0 <= u <= 1. | | public float | getInterpolatedHeading(float u)
Computes the interpolated heading along the curve at a given point
between key frames and returns the interpolated value as a float
This routine uses linear interpolation if the (i+1)th
key frame's linear value is equal to 1.
Parameters:
u - specifies the point between keyframes where 0 <= u <= 1. | | public float | getInterpolatedPitch(float u)
Computes the interpolated pitch along the curve at a given point
between key frames and returns the interpolated value as a float
This routine uses linear interpolation if the (i+1)th
key frame's linear value is equal to 1.
Parameters:
u - specifies the point between keyframes where 0 <= u <= 1. | | public void | getInterpolatedPosition(float u, Point3f newPos)
Computes the interpolated position along the curve at a given point
between key frames and returns a Point3f with the interpolated
x, y, and z scale components. | | public void | getInterpolatedPositionVector(float u, Vector3f newPos)
Computes the interpolated position along the curve at a given point
between key frames and returns a Vector3f with the interpolated
x, y, and z scale components. | | public void | getInterpolatedScale(float u, Point3f newScale)
Computes the interpolated scale along the curve at a given point
between key frames and returns a Point3f with the interpolated
x, y, and z scale components. | | public float | getInterpolatedValue(float u)
Computes the ratio of the length of the spline from the ith
key frame to the position specified by u to the length of the entire
spline segment from the ith key frame to the (i+1)
th key frame. |
| c0c1c2c3 | | Point3f c0c1c2c3(Code) | | |
| e0e1e2e3 | | Point3f e0e1e2e3(Code) | | |
| modCoeff | | final static double modCoeff(Code) | | |
| modRoot | | final static double modRoot(Code) | | |
| one_minus_b_in | | float one_minus_b_in(Code) | | |
| one_minus_b_out | | float one_minus_b_out(Code) | | |
| one_minus_c_in | | float one_minus_c_in(Code) | | |
| one_minus_c_out | | float one_minus_c_out(Code) | | |
| one_minus_t_in | | float one_minus_t_in(Code) | | |
| one_minus_t_out | | float one_minus_t_out(Code) | | |
| one_plus_b_in | | float one_plus_b_in(Code) | | |
| one_plus_b_out | | float one_plus_b_out(Code) | | |
| one_plus_c_in | | float one_plus_c_in(Code) | | |
| one_plus_c_out | | float one_plus_c_out(Code) | | |
| KBCubicSplineSegment | | KBCubicSplineSegment()(Code) | | |
| KBCubicSplineSegment | | KBCubicSplineSegment(KBKeyFrame kf0, KBKeyFrame kf1, KBKeyFrame kf2, KBKeyFrame kf3)(Code) | | Creates a cubic spline segment between two key frames using the
key frames provided. If creating a spline between the ith frame and
the (i+1)th frame then send down the (i - 1)th,
ith , (i+1)th and the (i+2)th key
frames.
Parameters:
kf0 - (i - 1)th Key Frame
Parameters:
kf1 - ith Key Frame
Parameters:
kf2 - (i + 1)th Key Frame
Parameters:
kf3 - (i + 2)th Key Frame |
| computeLength | | public float computeLength(float u)(Code) | | Computes the length of the curve at a given point between
key frames.
Parameters:
u - specifies the point between keyframes where 0 <= u <= 1. |
| getInterpolatedBank | | public float getInterpolatedBank(float u)(Code) | | Computes the interpolated bank along the curve at a given point
between key frames and returns the interpolated value as a float
This routine uses linear interpolation if the (i+1)th
key frame's linear value is equal to 1.
Parameters:
u - specifies the point between keyframes where 0 <= u <= 1. returns the interpolated bank value |
| getInterpolatedHeading | | public float getInterpolatedHeading(float u)(Code) | | Computes the interpolated heading along the curve at a given point
between key frames and returns the interpolated value as a float
This routine uses linear interpolation if the (i+1)th
key frame's linear value is equal to 1.
Parameters:
u - specifies the point between keyframes where 0 <= u <= 1. returns the interpolated heading value |
| getInterpolatedPitch | | public float getInterpolatedPitch(float u)(Code) | | Computes the interpolated pitch along the curve at a given point
between key frames and returns the interpolated value as a float
This routine uses linear interpolation if the (i+1)th
key frame's linear value is equal to 1.
Parameters:
u - specifies the point between keyframes where 0 <= u <= 1. returns the interpolated pitch value |
| getInterpolatedPosition | | public void getInterpolatedPosition(float u, Point3f newPos)(Code) | | Computes the interpolated position along the curve at a given point
between key frames and returns a Point3f with the interpolated
x, y, and z scale components. This routine uses linear
interpolation if the (i+1)th key frame's linear
value is equal to 1.
Parameters:
u - specifies the point between keyframes where 0 <= u <= 1.
Parameters:
newPos - returns the interpolated x,y,z position in a Point3f |
| getInterpolatedPositionVector | | public void getInterpolatedPositionVector(float u, Vector3f newPos)(Code) | | Computes the interpolated position along the curve at a given point
between key frames and returns a Vector3f with the interpolated
x, y, and z scale components. This routine uses linear
interpolation if the (i+1)th key frame's linear
value is equal to 1.
Parameters:
u - specifies the point between keyframes where 0 <= u <= 1.
Parameters:
newPos - returns the interpolated x,y,z position in a Vector3f. |
| getInterpolatedScale | | public void getInterpolatedScale(float u, Point3f newScale)(Code) | | Computes the interpolated scale along the curve at a given point
between key frames and returns a Point3f with the interpolated
x, y, and z scale components. This routine uses linear
interpolation if the (i+1)th key frame's linear
value is equal to 1.
Parameters:
u - specifies the point between keyframes where 0 <= u <= 1.
Parameters:
newScale - returns the interpolated x,y,z scale value in a Point3f |
| getInterpolatedValue | | public float getInterpolatedValue(float u)(Code) | | Computes the ratio of the length of the spline from the ith
key frame to the position specified by u to the length of the entire
spline segment from the ith key frame to the (i+1)
th key frame. When the (i+1)th key frame's linear
value is equal to 1, this is meaninful otherwise it should return u.
Parameters:
u - specifies the point between keyframes where 0 <= u <= 1. the interpolated ratio |
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