Package jgl.context.render

Class gl_render

java.lang.Object

jgl.context.render.gl_render

Direct Known Subclasses:

gl_depth, gl_select_render

public class gl_render
extends Object

gl_render is the basic rendering class of JavaGL 2.1. The most important method is draw_line(gl_vertex, gl_vertex) which paints the pixel between 2 2D points. The third dimension of the vertex represents the depth of the pixel. Note that considering depth for drawing a pixel is made in gl_depth (a subclass of gl_render)

Version:

0.4, 29 Nov 1999

Author:

Robin Bing-Yu Chen

Field Summary

Fields

Modifier and Type	Field	Description
protected gl_context	CC
protected int	color
protected int	dxl
protected int	dxr
protected int	dyl
protected int	dyl2
protected int	dyr
protected int	dyr2
protected int	LeftPoint
protected gl_render_pixel	pixel
protected int	RightPoint
protected int	x
protected int	y

Constructor Summary

Constructors

Constructor	Description
gl_render(gl_context cc)

Method Summary

Modifier and Type	Method	Description
protected void	dec_x()
protected void	dec_x_inc_y()
protected void	draw_horizontal_line()	Draw a flat horizontal line in the Color Buffer, assume that x1 is in the left side of x2
protected void	draw_horizontal_line(int y)
protected void	draw_horizontal_line(int x1, int x2, int y)	Draw a flat horizontal line in the Color Buffer, assume that x1 is in the left side of x2
void	draw_line(gl_vertex v1, gl_vertex v2)	Draw a line in the Color Buffer
void	draw_line(gl_vertex v1, gl_vertex v2, int color)	Draw a flat line in the Color Buffer
protected void	draw_point(gl_vertex v)
protected void	draw_point(gl_vertex v, int color)
void	draw_polygon(gl_polygon p)
void	draw_polygon(gl_polygon p, int color)
void	draw_triangle(gl_vertex v1, gl_vertex v2, gl_vertex v3)	Draw a flat triangle in the Color Buffer
void	draw_triangle(gl_vertex v1, gl_vertex v2, gl_vertex v3, int color)
protected void	inc_left()
protected void	inc_left_xy()
protected void	inc_right()
protected void	inc_right_xy()
protected void	inc_x()
protected void	inc_x_inc_y()
protected void	inc_y()
protected void	inc_y_more()
protected void	inc_y_once()
protected void	init(gl_vertex v1, gl_vertex v2)
protected void	init(gl_vertex v1, gl_vertex v2, gl_vertex v3)
protected void	init_dx(int dx)
protected void	init_dx_dy(int dx, int dy)
protected void	init_dx_dy(int area, int left, int right, int top)
protected void	init_dy(int dy)
protected void	init_left(int down, int top)
protected void	init_left_xy()
protected void	init_other(boolean delta, int dy)
protected void	init_right(int down, int top)
protected void	init_right_xy()
protected void	init_xy(gl_vertex v1, gl_vertex v2)
protected void	init_xy(gl_vertex v1, gl_vertex v2, gl_vertex v3)
protected void	put_pixel()	Will color the given pixel WITHOUT verifying depth buffer (see gl_depth.put_pixel()
protected void	put_pixel_by_index()	Will color the given pixel WITHOUT verifying depth buffer (see gl_depth.put_pixel_by_index()
protected void	set_first_point()
protected void	set_first_xy()
protected void	set_left(int pos)
protected void	set_left_xy(int pos)
void	set_pixel(gl_render_pixel p)
protected void	set_right(int pos)
protected void	set_right_xy(int pos)
protected void	x_dec_x()
protected void	x_inc_x()
protected void	y_inc_y()

Methods inherited from class java.lang.Object

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

Field Detail

CC

protected gl_context CC

pixel

protected gl_render_pixel pixel

x

protected int x

y

protected int y

color

protected int color

RightPoint

protected int RightPoint

LeftPoint

protected int LeftPoint

dyl

protected int dyl

dyl2

protected int dyl2

dyr

protected int dyr

dyr2

protected int dyr2

dxl

protected int dxl

dxr

protected int dxr

Constructor Detail

gl_render

public gl_render(gl_context cc)

Method Detail

init_xy

protected void init_xy(gl_vertex v1,
                       gl_vertex v2)

init

protected void init(gl_vertex v1,
                    gl_vertex v2)

set_first_xy

protected void set_first_xy()

set_first_point

protected void set_first_point()

init_dx

protected void init_dx(int dx)

init_dy

protected void init_dy(int dy)

init_dx_dy

protected void init_dx_dy(int dx,
                          int dy)

x_inc_x

protected void x_inc_x()

x_dec_x

protected void x_dec_x()

y_inc_y

protected void y_inc_y()

inc_x

protected void inc_x()

dec_x

protected void dec_x()

inc_y

protected void inc_y()

inc_x_inc_y

protected void inc_x_inc_y()

dec_x_inc_y

protected void dec_x_inc_y()

put_pixel

protected void put_pixel()

Will color the given pixel WITHOUT verifying depth buffer (see gl_depth.put_pixel()

put_pixel_by_index

protected void put_pixel_by_index()

Will color the given pixel WITHOUT verifying depth buffer (see gl_depth.put_pixel_by_index()

draw_point

protected void draw_point(gl_vertex v)

draw_point

protected void draw_point(gl_vertex v,
                          int color)

draw_horizontal_line

protected void draw_horizontal_line(int x1,
                                    int x2,
                                    int y)

Draw a flat horizontal line in the Color Buffer, assume that x1 is in the left side of x2

draw_horizontal_line

protected void draw_horizontal_line()

Draw a flat horizontal line in the Color Buffer, assume that x1 is in the left side of x2

draw_line

public void draw_line(gl_vertex v1,
                      gl_vertex v2)

Draw a line in the Color Buffer

draw_line

public void draw_line(gl_vertex v1,
                      gl_vertex v2,
                      int color)

Draw a flat line in the Color Buffer

init_xy

protected void init_xy(gl_vertex v1,
                       gl_vertex v2,
                       gl_vertex v3)

init

protected void init(gl_vertex v1,
                    gl_vertex v2,
                    gl_vertex v3)

set_left_xy

protected void set_left_xy(int pos)

set_right_xy

protected void set_right_xy(int pos)

set_left

protected void set_left(int pos)

set_right

protected void set_right(int pos)

init_dx_dy

protected void init_dx_dy(int area,
                          int left,
                          int right,
                          int top)

init_other

protected void init_other(boolean delta,
                          int dy)

init_left_xy

protected void init_left_xy()

init_right_xy

protected void init_right_xy()

init_left

protected void init_left(int down,
                         int top)

init_right

protected void init_right(int down,
                          int top)

inc_y_once

protected void inc_y_once()

inc_y_more

protected void inc_y_more()

inc_left_xy

protected void inc_left_xy()

inc_right_xy

protected void inc_right_xy()

inc_left

protected void inc_left()

inc_right

protected void inc_right()

draw_horizontal_line

protected void draw_horizontal_line(int y)

draw_triangle

public void draw_triangle(gl_vertex v1,
                          gl_vertex v2,
                          gl_vertex v3)

Draw a flat triangle in the Color Buffer

draw_triangle

public void draw_triangle(gl_vertex v1,
                          gl_vertex v2,
                          gl_vertex v3,
                          int color)

draw_polygon

public void draw_polygon(gl_polygon p)

draw_polygon

public void draw_polygon(gl_polygon p,
                         int color)

set_pixel

public void set_pixel(gl_render_pixel p)