GeometricObject2d (OpenIMAJ master project 1.3.10 API)

All Known Subinterfaces:

Path2d, Shape

All Known Implementing Classes:

Circle, Contour, Ellipse, HoughCircles.WeightedCircle, Line2d, PointList, Polygon, Polyline, Rectangle, Rectangle3D, RotatedRectangle, Triangle, TriangulatedPolygon
```
public interface GeometricObject2d
```
A generalised 2D geometric object that has a calculable centre of gravity and regular bounding box. The object can also be transformed in a variety of ways.

Author:

Jonathon Hare (jsh2@ecs.soton.ac.uk)

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`Point2d`	`calculateCentroid()` Calculate the centroid of the shape
`Rectangle`	`calculateRegularBoundingBox()` Compute the regular (oriented to the axes) bounding box of the shape.
`double`	`getHeight()`
`double`	`getWidth()`
`double`	`maxX()`
`double`	`maxY()`
`double`	`minX()`
`double`	`minY()`
`void`	`scale(float sc)` Scale the shape by the given amount about (0,0).
`void`	`scale(Point2d centre, float sc)` Scale the shape by the given amount about the given point.
`void`	`scaleCentroid(float sc)` Scale the shape about its centroid.
`GeometricObject2d`	`transform(Jama.Matrix transform)` Apply a 3x3 transform matrix to a copy of the `GeometricObject2d` and return it
`void`	`translate(float x, float y)` Translate the shapes position

- Method Detail
  - calculateRegularBoundingBox
```
Rectangle calculateRegularBoundingBox()
```
    Compute the regular (oriented to the axes) bounding box of the shape.
    
    Returns:
    
    the regular bounding box as [x,y,width,height]
  - translate
```
void translate(float x,
               float y)
```
    Translate the shapes position
    
    Parameters:
    
    x - x-translation
    
    y - y-translation
  - scale
```
void scale(float sc)
```
    Scale the shape by the given amount about (0,0). Scalefactors between 0 and 1 shrink the shape.
    
    Parameters:
    
    sc - the scale factor.
  - scale
```
void scale(Point2d centre,
           float sc)
```
    Scale the shape by the given amount about the given point. Scalefactors between 0 and 1 shrink the shape.
    
    Parameters:
    
    centre - the centre of the scaling operation
    
    sc - the scale factor
  - scaleCentroid
```
void scaleCentroid(float sc)
```
    Scale the shape about its centroid. Scalefactors between 0 and 1 shrink the shape.
    
    Parameters:
    
    sc - the scale factor
  - calculateCentroid
```
Point2d calculateCentroid()
```
    Calculate the centroid of the shape
    
    Returns:
    
    the centroid of the shape
  - minX
```
double minX()
```
    Returns:
    
    the minimum x-ordinate
  - minY
```
double minY()
```
    Returns:
    
    the minimum y-ordinate
  - maxX
```
double maxX()
```
    Returns:
    
    the maximum x-ordinate
  - maxY
```
double maxY()
```
    Returns:
    
    the maximum y-ordinate
  - getWidth
```
double getWidth()
```
    Returns:
    
    the width of the regular bounding box
  - getHeight
```
double getHeight()
```
    Returns:
    
    the height of the regular bounding box
  - transform
```
GeometricObject2d transform(Jama.Matrix transform)
```
    Apply a 3x3 transform matrix to a copy of the GeometricObject2d and return it
    
    Parameters:
    
    transform - 3x3 transform matrix
    
    Returns:
    
    the transformed shape

Interface GeometricObject2d

Method Summary

Method Detail

calculateRegularBoundingBox

translate

scale

scale

scaleCentroid

calculateCentroid

minX

minY

maxX

maxY

getWidth

getHeight

transform