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

Class TexturedTriangle

java.lang.Object

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

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

eu.svjatoslav.sixth.e3d.renderer.raster.shapes.basic.texturedpolygon.TexturedTriangle

public class TexturedTriangle
extends AbstractCoordinateShape

A textured triangle renderer with perspective-correct texture mapping.

This class renders triangles with UV-mapped textures. For large triangles, the rendering may be tessellated into smaller pieces for better perspective correction.

Perspective-correct texture rendering:

• Small triangles are rendered without perspective correction
• Larger triangles are tessellated into smaller pieces for accurate perspective

See Also:

• Texture
• Vertex.textureCoordinate

Field Summary

Fields

Modifier and Type	Field	Description
final Texture	texture	The texture to apply to this triangle.

Fields inherited from class eu.svjatoslav.sixth.e3d.renderer.raster.shapes.AbstractCoordinateShape

onScreenZ, shapeId, vertices

Fields inherited from class eu.svjatoslav.sixth.e3d.renderer.raster.shapes.AbstractShape

cachedBoundingBox, mouseInteractionController

Constructor Summary

Constructors

Constructor	Description
TexturedTriangle(Vertex p1, Vertex p2, Vertex p3, Texture texture)	Creates a textured triangle with the specified vertices and texture.

Method Summary

Modifier and Type	Method	Description
boolean	isBackfaceCullingEnabled()	Checks if backface culling is enabled for this triangle.
void	paint(RenderingContext renderBuffer)	Renders this textured triangle to the screen.
void	setBackfaceCulling(boolean backfaceCulling)	Enables or disables backface culling for this triangle.

Methods inherited from class eu.svjatoslav.sixth.e3d.renderer.raster.shapes.AbstractCoordinateShape

getBoundingBox, getZ, transform, translate

Methods inherited from class eu.svjatoslav.sixth.e3d.renderer.raster.shapes.AbstractShape

invalidateBounds, setMouseInteractionController

Methods inherited from class java.lang.Object

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

Field Details

texture

public final Texture texture

The texture to apply to this triangle.

Constructor Details

TexturedTriangle

public TexturedTriangle(Vertex p1,
 Vertex p2,
 Vertex p3,
 Texture texture)

Creates a textured triangle with the specified vertices and texture.

Parameters:

p1 - the first vertex (must have textureCoordinate set)

p2 - the second vertex (must have textureCoordinate set)

p3 - the third vertex (must have textureCoordinate set)

texture - the texture to apply

Method Details

paint

public void paint(RenderingContext renderBuffer)

Renders this textured triangle to the screen.

This method performs:

• Backface culling check (if enabled)
• Mouse interaction detection
• Mipmap level selection based on screen coverage
• Scanline rasterization with texture sampling

Specified by:

paint in class AbstractCoordinateShape

Parameters:

renderBuffer - the rendering context containing the pixel buffer

isBackfaceCullingEnabled

public boolean isBackfaceCullingEnabled()

Checks if backface culling is enabled for this triangle.

Returns:

true if backface culling is enabled

setBackfaceCulling

public void setBackfaceCulling(boolean backfaceCulling)

Enables or disables backface culling for this triangle.

Parameters:

backfaceCulling - true to enable backface culling