Package eu.svjatoslav.sixth.e3d.renderer.raster.shapes

Class AbstractShape

java.lang.Object

eu.svjatoslav.sixth.e3d.renderer.raster.shapes.AbstractShape

Direct Known Subclasses:

AbstractCompositeShape, AbstractCoordinateShape

public abstract class AbstractShape
extends Object

Base class for all renderable shapes in the Sixth 3D engine.

Every shape that can be rendered must extend this class and implement the transform(TransformStack, RenderAggregator, RenderingContext) method, which projects the shape from world space into screen space during each render frame.

Shapes can optionally have a MouseInteractionController attached to receive mouse click and hover events when the user interacts with the shape in the 3D view.

Shape hierarchy overview:

 AbstractShape
   +-- AbstractCoordinateShape   (shapes with vertex coordinates: lines, polygons)
   +-- AbstractCompositeShape    (groups of sub-shapes: boxes, grids, text canvases)
 

See Also:

• for shapes defined by vertex coordinates
• for compound shapes
• for handling mouse events on shapes

Field Summary

Fields

Modifier and Type	Field	Description
MouseInteractionController	mouseInteractionController	Optional controller that receives mouse interaction events (click, enter, exit) when the user interacts with this shape in the 3D view.

Constructor Summary

Constructors

Constructor	Description
AbstractShape()

Method Summary

Modifier and Type	Method	Description
void	setMouseInteractionController(MouseInteractionController mouseInteractionController)	Assigns a mouse interaction controller to this shape.
abstract void	transform(TransformStack transforms, RenderAggregator aggregator, RenderingContext renderingContext)	Transforms this shape from world space to screen space and queues it for rendering.

Methods inherited from class java.lang.Object

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

Field Details

mouseInteractionController

public MouseInteractionController mouseInteractionController

Optional controller that receives mouse interaction events (click, enter, exit) when the user interacts with this shape in the 3D view. Set to null if mouse interaction is not needed.

Constructor Details

AbstractShape

public AbstractShape()

Method Details

setMouseInteractionController

public void setMouseInteractionController(MouseInteractionController mouseInteractionController)

Assigns a mouse interaction controller to this shape.

Example usage:

 shape.setMouseInteractionController(new MouseInteractionController() {
     public boolean mouseClicked(int button) {
         System.out.println("Shape clicked!");
         return true;
     }
     public boolean mouseEntered() { return false; }
     public boolean mouseExited() { return false; }
 });
 

Parameters:

mouseInteractionController - the controller to handle mouse events, or null to disable mouse interaction

transform

public abstract void transform(TransformStack transforms,
 RenderAggregator aggregator,
 RenderingContext renderingContext)

Transforms this shape from world space to screen space and queues it for rendering.

This method is called once per frame for each shape in the scene. Implementations should apply the current transform stack to their vertices, compute screen-space coordinates, and if the shape is visible, add it to the RenderAggregator for depth-sorted painting.

Parameters:

transforms - the current stack of transforms (world-to-camera transformations)

aggregator - collects transformed shapes for depth-sorted rendering

renderingContext - provides frame dimensions, graphics context, and frame metadata