edu.hws.jcm.draw
Class Crosshair
java.lang.Object
edu.hws.jcm.draw.Drawable
edu.hws.jcm.draw.DrawGeometric
edu.hws.jcm.draw.Crosshair
- All Implemented Interfaces:
- Computable, Serializable
public class Crosshair
- extends DrawGeometric
A Crosshair is a small cross, 15 pixels wide and high, that is drawn in
a CoordinateRect at a specified point.
A Crosshair is a Computable object, so should be added to a Controller to be
recomputed when the coordinates of the point change.
- See Also:
- Serialized Form
Fields inherited from class edu.hws.jcm.draw.DrawGeometric |
a, b, c, color, CROSS, d, fillColor, h, INFINITE_LINE_ABSOLUTE, INFINITE_LINE_RELATIVE, LINE_ABSOLUTE, LINE_CENTERED, LINE_RELATIVE, lineWidth, OVAL_ABSOLUTE, OVAL_CENTERED, OVAL_RELATIVE, RECT_ABSOLUTE, RECT_CENTERED, RECT_RELATIVE, shape, v, x1, x2, y1, y2 |
Constructor Summary |
Crosshair(Value x,
Function f)
Create a cross that appears on the graph of the function y=f(x)
at the point with coordinates (x,f(x)). |
Crosshair(Value x,
Value y)
Create a cross that appears at the point with coordinates (x,y). |
Methods inherited from class edu.hws.jcm.draw.DrawGeometric |
compute, draw, getColor, getFillColor, getH, getLineWidth, getV, getX1, getX2, getY1, getY2, setColor, setFillColor, setH, setLineWidth, setPoints, setPoints, setShape, setV, setX1, setX2, setY1, setY2 |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Crosshair
public Crosshair(Value x,
Value y)
- Create a cross that appears at the point with coordinates (x,y).
Crosshair
public Crosshair(Value x,
Function f)
- Create a cross that appears on the graph of the function y=f(x)
at the point with coordinates (x,f(x)). f should be a function
of one variable.