ej.microvg.image

Interface ImageGenerator

All Known Implementing Classes:

NemaImageGenerator, VgliteImageGenerator

public interface ImageGenerator

A generator is able to generate images into a GPU format.

The implementation of this class is required by the VEE Port. Two implementations are already provided: vglite and nema.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	ImageGenerator.Command List of path commands.
static class	ImageGenerator.FillRule List of rules to fill a path.
static class	ImageGenerator.Format List of image's formats.

Method Summary

Modifier and Type	Method and Description
int	encodeColor(java.awt.Color color, float opacity) Encodes the GPU color from a Color and an opacity.
int	encodeCommand(ImageGenerator.Command command) Encodes the GPU command from a ImageGenerator.Command
byte[]	encodeGradient(LinearGradient gradient) Encodes a linear gradient for the GPU.
byte[]	encodePath(Path path) Encodes a path for the GPU (path header + path commands + path commands parameters).
default java.nio.ByteBuffer	newByteBuffer(int size) Creates a byte buffer for the given size, ordered in little endian.

Method Detail

encodeCommand

int encodeCommand(ImageGenerator.Command command)

Encodes the GPU command from a ImageGenerator.Command

Parameters:

command - the command to convert.

Returns:

GPU command representation.

encodeColor

int encodeColor(java.awt.Color color,
                float opacity)

Encodes the GPU color from a Color and an opacity.

Parameters:

color - the color to convert.

opacity - the opacity to apply, a value between 0f and 1f.

Returns:

GPU color representation.

encodeGradient

byte[] encodeGradient(LinearGradient gradient)

Encodes a linear gradient for the GPU.

Parameters:

gradient - the gradient to encode

Returns:

GPU linear gradient representation

encodePath

byte[] encodePath(Path path)

Encodes a path for the GPU (path header + path commands + path commands parameters).

The Path.encode(PathData) method should be used to browse the commands of the path. These commands are encoded by encodeCommand(Command) and append to the associated path data.

Parameters:

path - the path to encode

Returns:

the encoded path

newByteBuffer

default java.nio.ByteBuffer newByteBuffer(int size)

Creates a byte buffer for the given size, ordered in little endian.

Parameters:

size - the byte buffer size

Returns:

the little endian byte buffer