Package eu.svjatoslav.sixth.e3d.gui

Class SegmentRenderingContext

java.lang.Object

eu.svjatoslav.sixth.e3d.gui.RenderingContext

eu.svjatoslav.sixth.e3d.gui.SegmentRenderingContext

public class SegmentRenderingContext
extends RenderingContext

A view of a RenderingContext for rendering a horizontal screen segment.

This class wraps a parent RenderingContext and provides its own Y-bounds for multi-threaded rendering. All operations delegate to the parent context, but with segment-specific Y bounds for pixel operations.

Mouse tracking is local to each segment and must be combined after all segments complete rendering.

See Also:

• RenderingContext

Field Summary

Fields inherited from class eu.svjatoslav.sixth.e3d.gui.RenderingContext

bufferedImageType, centerCoordinate, debugLogBuffer, developerTools, frameNumber, graphics, height, lightingManager, NUM_RENDER_SEGMENTS, pixels, projectionScale, renderMaxY, renderMinY, width

Constructor Summary

Constructors

Constructor	Description
SegmentRenderingContext(RenderingContext parent, int renderMinY, int renderMaxY, int segmentIndex)	Creates a segment view of a parent rendering context.

Method Summary

Modifier and Type	Method	Description
void	executeWithGraphics(Consumer<Graphics2D> operation)	Executes a graphics operation in a thread-safe manner.
MouseInteractionController	getCurrentObjectUnderMouseCursor()	Returns the current object under the mouse cursor.
MouseEvent	getMouseEvent()	Returns the pending mouse event for this frame, or null if none.
MouseInteractionController	getSegmentMouseHit()	Returns the mouse hit detected in this segment.
void	setCurrentObjectUnderMouseCursor(MouseInteractionController controller)	Called when given object was detected under mouse cursor, while processing RenderingContext.mouseEvent.
void	setMouseEvent(MouseEvent mouseEvent)	Sets the mouse event to be processed during this frame's rendering.

Methods inherited from class eu.svjatoslav.sixth.e3d.gui.RenderingContext

dispose, getSegmentGraphics, handlePossibleComponentMouseEvent, prepareForNewFrameRendering

Methods inherited from class java.lang.Object

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

Constructor Details

SegmentRenderingContext

public SegmentRenderingContext(RenderingContext parent,
 int renderMinY,
 int renderMaxY,
 int segmentIndex)

Creates a segment view of a parent rendering context.

Parameters:

parent - the parent rendering context to delegate to

renderMinY - minimum Y coordinate (inclusive) for this segment

renderMaxY - maximum Y coordinate (exclusive) for this segment

segmentIndex - the index of this segment (0 to NUM_RENDER_SEGMENTS-1)

Method Details

executeWithGraphics

public void executeWithGraphics(Consumer<Graphics2D> operation)

Description copied from class: RenderingContext

Executes a graphics operation in a thread-safe manner. This must be used for all Graphics2D operations (text, lines, etc.) during multi-threaded rendering.

Overrides:

executeWithGraphics in class RenderingContext

Parameters:

operation - the graphics operation to execute

getMouseEvent

public MouseEvent getMouseEvent()

Description copied from class: RenderingContext

Returns the pending mouse event for this frame, or null if none.

Overrides:

getMouseEvent in class RenderingContext

Returns:

the mouse event to process, or null

setMouseEvent

public void setMouseEvent(MouseEvent mouseEvent)

Description copied from class: RenderingContext

Sets the mouse event to be processed during this frame's rendering.

Overrides:

setMouseEvent in class RenderingContext

Parameters:

mouseEvent - the mouse event with position and button information

setCurrentObjectUnderMouseCursor

public void setCurrentObjectUnderMouseCursor(MouseInteractionController controller)

Description copied from class: RenderingContext

Called when given object was detected under mouse cursor, while processing RenderingContext.mouseEvent. Because objects are rendered back to front. The last method caller will set the top-most object, if there are multiple objects under mouse cursor.

Overrides:

setCurrentObjectUnderMouseCursor in class RenderingContext

Parameters:

controller - the object that is currently under the mouse cursor

getSegmentMouseHit

public MouseInteractionController getSegmentMouseHit()

Returns the mouse hit detected in this segment.

Returns:

the MouseInteractionController that was under the mouse in this segment, or null

getCurrentObjectUnderMouseCursor

public MouseInteractionController getCurrentObjectUnderMouseCursor()

Description copied from class: RenderingContext

Returns the current object under the mouse cursor. Used by segment rendering to collect mouse results.

Overrides:

getCurrentObjectUnderMouseCursor in class RenderingContext

Returns:

the current object under mouse cursor, or null