Module org.jhotdraw8.geom
Package org.jhotdraw8.geom

Class AbstractPathBuilder<T>

java.lang.Object
org.jhotdraw8.geom.AbstractPathBuilder<T>
Type Parameters:
T - the product type
All Implemented Interfaces:
PathBuilder<T>
Direct Known Subclasses:
AbstractPathDataBuilder, AffineTransformPathBuilder, AreaMetricsBuilder, AwtPathBuilder, BezierPathBuilder, BoundingBoxBuilder, ContourPathBuilder, FXPathElementsBuilder, FXPathPointsBuilder, FXPolygonBuilder, FXTransformPathBuilder, MarkerPathBuilder, NineRegionsScalingBuilder, PathIteratorPathBuilder, PlinePathBuilder, StartAndEndPointPathBuilder, StartAndEndPointsPathBuilder
public abstract class AbstractPathBuilder<T> extends Object implements PathBuilder<T>
AbstractPathBuilder.
Author:
Werner Randelshofer

  • Constructor Summary

    Constructors
    Constructor
    Description
    AbstractPathBuilder()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    arcTo(double radiusX, double radiusY, double xAxisRotation, double x, double y, boolean largeArcFlag, boolean sweepFlag)
    Adds an elliptical arc to the path which goes to the specified end point using the specified parameters.
    final void
    closePath()
    Closes the path by adding a straight line back to the last PathBuilder.moveTo(java.awt.geom.Point2D) point.
    final void
    curveTo(double x1, double y1, double x2, double y2, double x, double y)
    Adds a cubic curve going to the specified end point coordinate using the specified control points.
    protected void
    doArcTo(double lastX, double lastY, double radiusX, double radiusY, double xAxisRotation, double x, double y, boolean largeArcFlag, boolean sweepFlag)
     
    protected abstract void
    doClosePath(double lastX, double lastY, double lastMoveToX, double lastMoveToY)
     
    protected abstract void
    doCurveTo(double lastX, double lastY, double x1, double y1, double x2, double y2, double x, double y)
     
    protected abstract void
    doLineTo(double lastX, double lastY, double x, double y)
     
    protected abstract void
    doMoveTo(double x, double y)
     
    protected abstract void
    doPathDone()
     
    protected abstract void
    doQuadTo(double lastX, double lastY, double x1, double y1, double x, double y)
     
    protected void
    doSmoothCurveTo(double lastX, double lastY, double x1, double y1, double x2, double y2, double x, double y)
     
    protected void
    doSmoothQuadTo(double lastX, double lastY, double x1, double y1, double x, double y)
     
    double
    getLastCX()
    Getter.
    double
    getLastCY()
    Getter.
    double
    getLastMoveToX()
     
    double
    getLastMoveToY()
     
    @NonNull Point2D.Double
    getLastPoint()
    Getter.
    double
    getLastX()
    Getter.
    double
    getLastY()
    Getter.
    final void
    lineTo(double x, double y)
    Adds a straight line to the path going to the specified end point.
    final void
    moveTo(double x, double y)
    Adds a point to the path by moving to the specified point coordinates.
    boolean
    needsMoveTo()
     
    void
    pathDone()
    Performs path processing after all the path segments have been added to the builder.
    final void
    quadTo(double x1, double y1, double x, double y)
    Adds a quadratic curve going to the specified point coordinate using the specified control point.
    protected void
    setLastCX(double lastCX)
     
    protected void
    setLastCY(double lastCY)
     
    protected void
    setLastX(double lastX)
     
    protected void
    setLastY(double lastY)
     
    final void
    smoothCurveTo(double x2, double y2, double x, double y)
    Adds a smooth cubic curve going to the specified end point coordinate using the specified control point.
    final void
    smoothQuadTo(double x, double y)
    Adds a smooth quadratic curve going to the specified end point coordinate.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    Methods inherited from interface org.jhotdraw8.geom.PathBuilder

    build, circle, counterClockwiseCircle, curveTo, lineTo, moveTo, quadTo, smoothCurveTo, smoothQuadTo

  • Constructor Details

    • AbstractPathBuilder

      public AbstractPathBuilder()

  • Method Details

    • arcTo

      public void arcTo(double radiusX, double radiusY, double xAxisRotation, double x, double y, boolean largeArcFlag, boolean sweepFlag)
      Description copied from interface: PathBuilder
      Adds an elliptical arc to the path which goes to the specified end point using the specified parameters.

      The elliptical arc is defined by two radii, an angle from the x-axis, a flag to choose the large arc or not, a flag to indicate if we increase or decrease the angles and the final point of the arc.

      As specified in SVG elliptical arc commands.

      The default implementation of this method has been derived from Apache Batik class org.apache.batik.ext.awt.geom.ExtendedGeneralPath#computArc. The default implementation decomposes the arc into cubic curve segments and invokes corresponding curveTo methods.

      Specified by:
      arcTo in interface PathBuilder<T>
      Parameters:
      radiusX - the x radius of the ellipse
      radiusY - the y radius of the ellipse
      xAxisRotation - the angle from the x-axis of the current coordinate system to the x-axis of the ellipse in degrees.
      x - the x coordinate of the end point
      y - the y coordinate of the end point
      largeArcFlag - the large arc flag. If true the arc spanning more than or equal to 180 degrees is chosen, otherwise the arc spanning less than 180 degrees is chosen
      sweepFlag - the sweep flag. If true the line joining center to arc sweeps through decreasing angles otherwise it sweeps through increasing angles

    • closePath

      public final void closePath()
      Description copied from interface: PathBuilder
      Closes the path by adding a straight line back to the last PathBuilder.moveTo(java.awt.geom.Point2D) point.

      If the path is already closed, then this method has no effect.

      Specified by:
      closePath in interface PathBuilder<T>

    • curveTo

      public final void curveTo(double x1, double y1, double x2, double y2, double x, double y)
      Description copied from interface: PathBuilder
      Adds a cubic curve going to the specified end point coordinate using the specified control points.
      Specified by:
      curveTo in interface PathBuilder<T>
      Parameters:
      x1 - the x coordinate of control point 1
      y1 - the y coordinate of control point 1
      x2 - the x coordinate of control point 2
      y2 - the y coordinate of control point 2
      x - the x coordinate of the end point
      y - the y coordinate of the end point

    • doArcTo

      protected void doArcTo(double lastX, double lastY, double radiusX, double radiusY, double xAxisRotation, double x, double y, boolean largeArcFlag, boolean sweepFlag)

    • doClosePath

      protected abstract void doClosePath(double lastX, double lastY, double lastMoveToX, double lastMoveToY)

    • doPathDone

      protected abstract void doPathDone()

    • doCurveTo

      protected abstract void doCurveTo(double lastX, double lastY, double x1, double y1, double x2, double y2, double x, double y)

    • doLineTo

      protected abstract void doLineTo(double lastX, double lastY, double x, double y)

    • doMoveTo

      protected abstract void doMoveTo(double x, double y)

    • doQuadTo

      protected abstract void doQuadTo(double lastX, double lastY, double x1, double y1, double x, double y)

    • doSmoothCurveTo

      protected void doSmoothCurveTo(double lastX, double lastY, double x1, double y1, double x2, double y2, double x, double y)

    • doSmoothQuadTo

      protected void doSmoothQuadTo(double lastX, double lastY, double x1, double y1, double x, double y)

    • pathDone

      public void pathDone()
      Description copied from interface: PathBuilder
      Performs path processing after all the path segments have been added to the builder.
      Specified by:
      pathDone in interface PathBuilder<T>

    • getLastPoint

      public @NonNull Point2D.Double getLastPoint()
      Description copied from interface: PathBuilder
      Getter.
      Specified by:
      getLastPoint in interface PathBuilder<T>
      Returns:
      the last end point.

    • getLastX

      public double getLastX()
      Description copied from interface: PathBuilder
      Getter.
      Specified by:
      getLastX in interface PathBuilder<T>
      Returns:
      x coordinate of the last end point.

    • getLastY

      public double getLastY()
      Description copied from interface: PathBuilder
      Getter.
      Specified by:
      getLastY in interface PathBuilder<T>
      Returns:
      y coordinate of the last control point.

    • getLastMoveToX

      public double getLastMoveToX()

    • getLastMoveToY

      public double getLastMoveToY()

    • getLastCX

      public double getLastCX()
      Description copied from interface: PathBuilder
      Getter.
      Specified by:
      getLastCX in interface PathBuilder<T>
      Returns:
      x coordinate of the last control point.

    • getLastCY

      public double getLastCY()
      Description copied from interface: PathBuilder
      Getter.
      Specified by:
      getLastCY in interface PathBuilder<T>
      Returns:
      y coordinate of the last control point.

    • lineTo

      public final void lineTo(double x, double y)
      Description copied from interface: PathBuilder
      Adds a straight line to the path going to the specified end point.
      Specified by:
      lineTo in interface PathBuilder<T>
      Parameters:
      x - the x coordinate of the end point
      y - the y coordinate of the end point

    • moveTo

      public final void moveTo(double x, double y)
      Description copied from interface: PathBuilder
      Adds a point to the path by moving to the specified point coordinates.
      Specified by:
      moveTo in interface PathBuilder<T>
      Parameters:
      x - the x coordinate of the end point
      y - the y coordinate of the end point

    • quadTo

      public final void quadTo(double x1, double y1, double x, double y)
      Description copied from interface: PathBuilder
      Adds a quadratic curve going to the specified point coordinate using the specified control point.

      The default implementation of this method calls PathBuilder.quadTo(double, double, double, double).

      Specified by:
      quadTo in interface PathBuilder<T>
      Parameters:
      x1 - the x coordinate of the control point
      y1 - the y coordinate of the control point
      x - the x coordinate of the end point
      y - the y coordinate of the end point

    • smoothCurveTo

      public final void smoothCurveTo(double x2, double y2, double x, double y)
      Description copied from interface: PathBuilder
      Adds a smooth cubic curve going to the specified end point coordinate using the specified control point.

      The coordinates of control point 1 is the coordinate of the last control point mirrored along the last end point.

      Specified by:
      smoothCurveTo in interface PathBuilder<T>
      Parameters:
      x2 - the x coordinate of control point 2
      y2 - the y coordinate of control point 2
      x - the x coordinate of the end point
      y - the y coordinate of the end point

    • smoothQuadTo

      public final void smoothQuadTo(double x, double y)
      Description copied from interface: PathBuilder
      Adds a smooth quadratic curve going to the specified end point coordinate.

      The coordinates of the control point is the coordinate of the last control point mirrored along the last end point.

      Specified by:
      smoothQuadTo in interface PathBuilder<T>
      Parameters:
      x - the x coordinate of the end point
      y - the y coordinate of the end point

    • setLastX

      protected void setLastX(double lastX)

    • setLastY

      protected void setLastY(double lastY)

    • setLastCX

      protected void setLastCX(double lastCX)

    • setLastCY

      protected void setLastCY(double lastCY)

    • needsMoveTo

      public boolean needsMoveTo()
      Specified by:
      needsMoveTo in interface PathBuilder<T>