Drawing system.
[C API]

---

Detailed Description

Drawing system.

dcplaya drawing system API provides functions for drawing text and geometrical primitives towards tile accelerator.

dcplaya drawing system provides functions for :

• 2D text primitives
• 2D clipping
• Boxes drawing
• Texture manager
• Triangle primitive
• Strip primitive

Author:

benjamin gerard

Files
file	draw.h
	drawing system
Modules
Boxes Primitives
	non textured boxes primitives
Clipping Primitives
	clipping primitives
Color Definition
	color definition
Graphic Context
	graphic context
Draw Primitives
	draw primitives
Tile Accelerator (TA)
	tile accelerator (TA) interface
Draw text
	draw text
Texture Manager
	texture manager
Viewport
	viewport
Data Structures
struct	gc_t
	Graphic context structure. More...
Drawing system initialization functions.
int	draw_init (const float screen_width, const float screen_height)
	Initialize the drawing system.
void	draw_shutdown (void)
	Shutdown the drawing system.
Drawing system globals.
float	draw_screen_width
	Current drawing system screen width.
float	draw_screen_height
	Current drawing system screen height.
viewport_t	draw_viewport
	Current drawing system viewport.
matrix_t	draw_projection
	Current drawing system projection.
float	draw_znear
	Current draw projection Z near.
float	draw_ooznear
	Current draw projection 1/Z near.

---

Function Documentation

int draw_init (  const float  screen_width, const float  screen_height )

Initialize the drawing system. The draw_init() function initializes all drawing system components : Set a default viewport on the screen box. Set a default projection matrix with an open angle of 70 degree a zFar at 250 and retrieves zNear. Initialize the rendering engine with the draw_init_render() function. Initialize the texture manager with the texture_init() function. Initialize the graphic context with the gc_init() function Parameters: screen_width  Screen width in pixel. screen_height  Screen height in pixel. Returns: error-code Return values: 0  Success <0  Failure

---

dcplaya documentation version 1.2

Generated on January 2004 by doxygen 1.3.5