Package com.inductiveautomation.rm.graphics

Class RMQuadratic

java.lang.Object
com.inductiveautomation.rm.graphics.RMLine
com.inductiveautomation.rm.graphics.RMQuadratic
All Implemented Interfaces:
Cloneable
Direct Known Subclasses:
RMBezier
public class RMQuadratic extends RMLine
This class models a simple quadratic curve, providing methods for extracting points, distance calculation, bisection, hit detection and such.

  • Field Details

  • Constructor Details

    • RMQuadratic

      public RMQuadratic()
      Creates a new quadratic curve.

    • RMQuadratic

      public RMQuadratic(RMPoint startPoint, RMPoint controlPoint, RMPoint endPoint)
      Creates a new quadratic curve for this gvein start point, control point and end point.

    • RMQuadratic

      public RMQuadratic(double x1, double y1, double x2, double y2, double x3, double y3)
      Creates a new quadratic curve for this gvein start point, control point and end point.

  • Method Details

    • setCurve

      public void setCurve(double x1, double y1, double x2, double y2, double x3, double y3)
      Sets the curve values.

    • setCurve

      public void setCurve(RMPoint p1, RMPoint p2, RMPoint p3)
      Sets the curve values.

    • getPoint

      public RMPoint getPoint(double t, RMPoint aPoint)
      Returns the point on this curve at the parametric location t (defined from 0-1).
      Overrides:
      getPoint in class RMLine

    • getDistance

      public double getDistance(RMPoint aPoint)
      Returns the minimum distance from the given point to this segment.
      Overrides:
      getDistance in class RMLine

    • getDistanceQuadratic

      public double getDistanceQuadratic(RMPoint aPoint)
      Returns the minimum distance from the given point to the curve.

    • getPointCount

      public int getPointCount()
      Returns the point count of segment.
      Overrides:
      getPointCount in class RMLine

    • getPointX

      public double getPointX(int anIndex)
      Returns the x of point at given index.
      Overrides:
      getPointX in class RMLine

    • getPointY

      public double getPointY(int anIndex)
      Returns the y of point at given index.
      Overrides:
      getPointY in class RMLine

    • subdivide

      public void subdivide(RMQuadratic left, RMQuadratic right)
      Subdivides this curve into the given left and right curves.

    • getMinX

      public double getMinX()
      Returns the min x point of this bezier.
      Overrides:
      getMinX in class RMLine

    • getMinY

      public double getMinY()
      Returns the min y point of this bezier.
      Overrides:
      getMinY in class RMLine

    • getMaxX

      public double getMaxX()
      Returns the max x point of this bezier.
      Overrides:
      getMaxX in class RMLine

    • getMaxY

      public double getMaxY()
      Returns the max y point of this bezier.
      Overrides:
      getMaxY in class RMLine

    • getBounds

      public void getBounds(Rectangle2D aRect)
      Returns the bounds.
      Overrides:
      getBounds in class RMLine

    • getBounds

      public static void getBounds(double x0, double y0, double x1, double y1, double x2, double y2, Rectangle2D aRect)
      Returns the bounds of the bezier.

    • getArcLength

      public float getArcLength(float start, float end)
      Returns the arc length of the segment up to parametric value t
      Overrides:
      getArcLength in class RMLine

    • getArcLengthFunction

      public RMMath.RMFunc getArcLengthFunction()
      Returns an RMFunc which calculates the arclength of the curve up to t

    • getParameterForLength

      public float getParameterForLength(float l)
      Returns parametric point t that corresponds to a given length along the curve. l is in the range [0-1] (ie. percentage of total arclength)
      Overrides:
      getParameterForLength in class RMLine

    • getInverseArcLengthFunction

      public RMMath.RMFunc getInverseArcLengthFunction()
      Returns an RMFunc which calculates t for a percentage length along the curve.