modelling
Class CircularArea

java.lang.Object
  modelling.CircularArea

All Implemented Interfaces:

Area

public class CircularArea

extends java.lang.Object

implements Area

Implements circular area. The boxes coverage is a square containing the area

Field Summary

float	sqr2
float	sqr2s2

Constructor Summary

CircularArea(Map map, float x, float y, float radius, float angle)

Method Summary

java.lang.Object	clone() Clone the area.
void	confirmSimuled() Confirms the last move simulated with a simule method of the area.
void	draw(Drawing g) Draws the Area and eventually the image of the associated element.
void	drawBorder(Drawing g, java.awt.Color c) Draws the borders of the area with the given color.
boolean	exactIsCrashingElements() Takes in argument a vector v returned by a simule method.
boolean	exactIsCrashingElements(java.util.Vector v)
void	fill(Drawing g, java.awt.Color c) Fills the area with the given color.
float	getAngle() Returns the orientation ( in Radian )
java.util.Vector	getIntersectedBoxes() Returns at least the boxes intersected by the area.
java.util.Vector	getPolygon() Returns a polygon aproximating the area.
java.lang.String[][]	getProperties() Returns the Area's properties.
float	getX() Returns the x-coordinate of the area's reference point.
float	getY() Returns the y-coordinate of the area's reference point.
void	highlight(Drawing g, java.awt.Color c) Highlights the Area. is used when it's selected in the interface.
boolean	inMap() Checks whether the area is included in te map.
boolean	intersect(Area a) Returns whether the area intersect these one.
boolean	intersect(float ax, float ay, float bx, float by) Returns whether the area intersect the segment (ax,ay),(bx,by)
boolean	intersect(java.util.Vector p1) Returns whether the polygon intersects this area.
boolean	isCrashingElements() Rounded here, because of the approximate covering boxes (there would be undue collisions!).
boolean	isCrashingElements(java.util.Vector v)
boolean	isIn(float px, float py) Returns whether the point is in the area.
boolean	isPolygon() Returns whether the area is a polygon.
boolean	rescale(float x, float y) Rescale by a 'x' and a 'y' factor without going out of the Map.
boolean	rotate(float angle) Rotates the area by the angle around the reference point getX() without going out of the Map.
boolean	setAngle(float a) Sets the orientation ( in radian ) Returns true if the modification is done, else false.
void	setElement(Element el) Sets the element to which we want to link the area.
void	setProperties(java.lang.String s1, java.lang.String s2) Sets the value of a property of the area.
boolean	setRadius(float r)
boolean	setX(float x) Modify the x-coordinate of the reference point, without going out of the .
boolean	setY(float y) Modify the y-coordinate of the reference point, without going out of the .
java.util.Vector	simuleRescale(float xS, float yS) Returns the covering boxes which would result of the rescale.
java.util.Vector	simuleRotate(float angle) Returns the covering boxes which would result of the rotation.
java.util.Vector	simuleTranslate(float x, float y) Returns the covering boxes which would result of the (x,y) translation of the area.
boolean	translate(float x, float y) Translates the area by the (x,y) vector without going out of the map.

Methods inherited from class java.lang.Object

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

Field Detail

sqr2

public final float sqr2

sqr2s2

public final float sqr2s2

Constructor Detail

CircularArea

public CircularArea(Map map,
                    float x,
                    float y,
                    float radius,
                    float angle)

Method Detail

getIntersectedBoxes

public java.util.Vector getIntersectedBoxes()

Description copied from interface: Area

Returns at least the boxes intersected by the area. A simplified vision can be used to computes the intersected boxes but il must respect this condition.

Specified by:

getIntersectedBoxes in interface Area

Returns:

the boxes intersected by the area.

See Also:

Area.setElement(Element), Box.register(Element), Box.unregister(Element)

setElement

public void setElement(Element el)

Description copied from interface: Area

Sets the element to which we want to link the area. Indeed, when the area is used to represent the shape of an element, it must know him in order to manage the covered boxes.

Specified by:

setElement in interface Area

Parameters:

el - the corresponding element ( if one is used ).

getX

public float getX()

Description copied from interface: Area

Returns the x-coordinate of the area's reference point. This point is the one used to rotate around, and is used to represent the coordinate of an element if one is tied to this shape.

Specified by:

getX in interface Area

Returns:

the x-coordinate of the area's reference point.

getY

public float getY()

Description copied from interface: Area

Returns the y-coordinate of the area's reference point. This point is the one used to rotate around, and is used to represent the coordinate of an element if one is tied to this shape.

Specified by:

getY in interface Area

Returns:

the y-coordinate of the area's reference point.

getAngle

public float getAngle()

Description copied from interface: Area

Returns the orientation ( in Radian )

Specified by:

getAngle in interface Area

Returns:

the orientation ( in Radian )

isIn

public boolean isIn(float px,
                    float py)

Description copied from interface: Area

Returns whether the point is in the area.

Specified by:

isIn in interface Area

Parameters:

px - the x-coordinate of the point.

py - the y-coordinate of the point.

Returns:

whether the point is in the area.

isCrashingElements

public boolean isCrashingElements()

Rounded here, because of the approximate covering boxes (there would be undue collisions!). This is because this area is designed to be fast. The elementsCollision should be used for this kind of area. However, the box-base collision is always an approximation!

Specified by:

isCrashingElements in interface Area

Returns:

whether there are elements registered on the area's boxes.

isCrashingElements

public boolean isCrashingElements(java.util.Vector v)

Specified by:

isCrashingElements in interface Area

isPolygon

public boolean isPolygon()

Description copied from interface: Area

Returns whether the area is a polygon.

Specified by:

isPolygon in interface Area

Returns:

whether the area is a polygon.

getPolygon

public java.util.Vector getPolygon()

Description copied from interface: Area

Returns a polygon aproximating the area. It's represented as a vector of edges in the trigonometric order.

Specified by:

getPolygon in interface Area

Returns:

a polygone aproximating the area.

intersect

public boolean intersect(float ax,
                         float ay,
                         float bx,
                         float by)

Description copied from interface: Area

Returns whether the area intersect the segment (ax,ay),(bx,by)

Specified by:

intersect in interface Area

Parameters:

ax - x-coordinate of the 'a' point.

ay - y-coordinate of the 'a' point.

bx - x-coordinate of the 'b' point.

by - y-coordinate of the 'b' point.

Returns:

whether the area intersect the segment (ax,ay),(bx,by)

intersect

public boolean intersect(java.util.Vector p1)

Description copied from interface: Area

Returns whether the polygon intersects this area.

Specified by:

intersect in interface Area

Parameters:

p1 - the polygon to test.Area.getPolygon()

Returns:

whether the polygon intersects this area.

intersect

public boolean intersect(Area a)

Description copied from interface: Area

Returns whether the area intersect these one. Indeed it verify whether their is an intersection between the polygone of one with the other or the opposite. It respects : a.intersect(b) == b.intersect(a).

Specified by:

intersect in interface Area

Parameters:

a - the area to test.

Returns:

whether the area intersect these one.

exactIsCrashingElements

public boolean exactIsCrashingElements()

Description copied from interface: Area

Takes in argument a vector v returned by a simule method. Returns true if there is any collision with the elements, or if the area is not included in the map (going out of the map is, by default, considered as a crash with the map, and that means that v is null). It computes a real intersection between the area of the elements registered in the covering boxes. This is an exact method that can be called by an element to verify that his new position satisfies physical laws in 2D. If it returns true, it means that the element has a valid position: he is in the map and does not intersect other elements. There is no false positives. The Area.isCrashingElements() is a fast approximation of this method.

Specified by:

exactIsCrashingElements in interface Area

Returns:

whether there are elements collision.

exactIsCrashingElements

public boolean exactIsCrashingElements(java.util.Vector v)

Specified by:

exactIsCrashingElements in interface Area

translate

public boolean translate(float x,
                         float y)

Description copied from interface: Area

Translates the area by the (x,y) vector without going out of the map. Returns true if the modification is done (can be done).

Specified by:

translate in interface Area

Parameters:

x - x-coordinate of the translation vector.

y - x-coordinate of the translation vector.

Returns:

true if the modification is done (can be done).

setRadius

public boolean setRadius(float r)

setX

public boolean setX(float x)

Description copied from interface: Area

Modify the x-coordinate of the reference point, without going out of the . Returns true if the modification is done, false otherwise.Renvoie true si la modification a eu lieu, false sinon.

Specified by:

setX in interface Area

Parameters:

x - the x-coordinate of the reference point.

Returns:

whether the modification is done.

See Also:

Area.getX()

setY

public boolean setY(float y)

Description copied from interface: Area

Modify the y-coordinate of the reference point, without going out of the . Returns true if the modification is done, false otherwise.Renvoie true si la modification a eu lieu, false sinon.

Specified by:

setY in interface Area

Parameters:

y - the y-coordinate of the reference point.

Returns:

whether the modification is done.

See Also:

Area.getY()

simuleTranslate

public java.util.Vector simuleTranslate(float x,
                                        float y)

Description copied from interface: Area

Returns the covering boxes which would result of the (x,y) translation of the area. It's used to foresee your position and so determine whether you can move. Null if out of the map.

Specified by:

simuleTranslate in interface Area

Parameters:

x - the x-coordinate of the translation.

y - the y-coordinate of the translation.

Returns:

the covering boxes which would result of the (x,y) translation of the area.

confirmSimuled

public void confirmSimuled()

Description copied from interface: Area

Confirms the last move simulated with a simule method of the area. The interest of using these two separate fonctions is to allow the collision detections or other computation before confirming the move. So, it is possible for an element to know the boxes that it would occupy after a spcified move, and then it can decide whether this move is suitable for it. We gain a lot of time here, not computing two times the same thing.

Specified by:

confirmSimuled in interface Area

rotate

public boolean rotate(float angle)

Description copied from interface: Area

Rotates the area by the angle around the reference point Area.getX() without going out of the Map. Returns true if the transformation has been done, false otherwise.

Specified by:

rotate in interface Area

Parameters:

angle - the angle of the rotation ( in radian )

Returns:

true if the transformation has been done, false otherwise.

setAngle

public boolean setAngle(float a)

Description copied from interface: Area

Sets the orientation ( in radian ) Returns true if the modification is done, else false.

Specified by:

setAngle in interface Area

Parameters:

a - Sets the orientation ( in radian )

Returns:

Returns true if the modification is done, else false.

simuleRotate

public java.util.Vector simuleRotate(float angle)

Description copied from interface: Area

Returns the covering boxes which would result of the rotation. Null if out of the map.

Specified by:

simuleRotate in interface Area

Parameters:

angle - the angle of the simulated rotation.

Returns:

the covering boxes which would result of the rotation.

rescale

public boolean rescale(float x,
                       float y)

Description copied from interface: Area

Rescale by a 'x' and a 'y' factor without going out of the Map. Returns true if the transformation has been done, false otherwise.

Specified by:

rescale in interface Area

Parameters:

x - the x-factor.

y - the y-factor.

Returns:

true if the transformation has been done, false otherwise.

simuleRescale

public java.util.Vector simuleRescale(float xS,
                                      float yS)

Description copied from interface: Area

Returns the covering boxes which would result of the rescale. Null if goes out of the map.

Specified by:

simuleRescale in interface Area

Parameters:

xS - the x-factor of the simulated rescale.

yS - the y-factor of the simulated rescale.

Returns:

the covering boxes which would result of the rescale.

inMap

public boolean inMap()

Description copied from interface: Area

Checks whether the area is included in te map.

Specified by:

inMap in interface Area

draw

public void draw(Drawing g)

Description copied from interface: Area

Draws the Area and eventually the image of the associated element. It gives a default method to draw elements.

Specified by:

draw in interface Area

Parameters:

g - the Drawing object containing the graphics context.

fill

public void fill(Drawing g,
                 java.awt.Color c)

Description copied from interface: Area

Fills the area with the given color.

Specified by:

fill in interface Area

drawBorder

public void drawBorder(Drawing g,
                       java.awt.Color c)

Description copied from interface: Area

Draws the borders of the area with the given color.

Specified by:

drawBorder in interface Area

highlight

public void highlight(Drawing g,
                      java.awt.Color c)

Description copied from interface: Area

Highlights the Area. is used when it's selected in the interface. It's better to give a transparent color in order to have something nice.

Specified by:

highlight in interface Area

Parameters:

g - the Drawing object.

c - the Color used to highlight.

getProperties

public java.lang.String[][] getProperties()

Description copied from interface: Area

Returns the Area's properties.

Specified by:

getProperties in interface Area

Returns:

the element's properties.

See Also:

Engine.getProperties()

setProperties

public void setProperties(java.lang.String s1,
                          java.lang.String s2)

Description copied from interface: Area

Sets the value of a property of the area. The new value is ignored if the property is read_only or if the value isn't valid.

Specified by:

setProperties in interface Area

Parameters:

s1 - the property to change.

s2 - the new value for the property.

See Also:

Engine.setProperties(java.lang.String, java.lang.String)

clone

public java.lang.Object clone()

Description copied from interface: Area

Clone the area.

Specified by:

clone in interface Area