// Various routines for manipulating 2D graphics
// coded by Scott Evans 8/4/97
// Last modified 16/4/97

#ifndef _2DGFX_H
#define _2DGFX_H

// Width and height of a texture page (in pixels)

#define TPWDTH	256
#define TPHGHT	256

// Semi-transparency effects

#define noEffects	0			// No transparency effects
#define pixelNormal	0x40000000	// Normal transparency effect
#define pixelAdd	0x50000000	// Pixel addition
#define pixelSub	0x60000000	// Pixel subtraction
#define pixelQAdd	0x70000000	// 25% pixel addition

#define displayOff	0x80000000	// stop displaying object

// Set the colour of a GsBOXF, GsLINE or GsGLINE

#define _SetColour(P,R,G,B) \
	(P)->r0=(R),(P)->g0=(G),(P)->b0=(B)

// Set GsBOXF (Filled box) parameters

#define _SetBOXF(P,A,X,Y,W,H,R,G,B) \
	(P)->attribute=(A),(P)->x=(X),(P)->y=(Y),(P)->w=(W),\
	(P)->h=(H),(P)->r=(R),(P)->g=(G),(P)->b=(B)

// Set GsLINE (straight line) parameters

#define _SetLINE(P,A,X,Y,X1,Y1,R,G,B) \
	(P)->attribute=(A),(P)->x0=(X),(P)->y0=(Y),(P)->x1=(X1),\
	(P)->y1=(Y1),(P)->r0=(R),(P)->g0=(G),(P)->b0=(B)

// Set GsGLINE (graduated line) parameters

#define _SetGLINE(P,A,X,Y,X1,Y1,R,G,B,R1,G1,B1) \
	_SetLINE(P,A,X,Y,X1,Y1,R,G,B),(P)->r1=(R1),\
	(P)->g1=(G1),(P)->b1=(B1)

// set GsCELL (background picture component)

#define _SetCELL(P,U,V,C,F,T) \
	(P)->u=(U),(P)->v=(V),(P)->cba=(C),(P)->flag=(F),(P)->tpage=(T)

// Set GsSPRITE
										
#define _SetSPRITE(P,A,X,Y,W,H,T,U,V,CX,CY,R,G,B,MX,MY,SX,SY,R1) \
	(P)->attribute=(A),(P)->x=(X),(P)->y=(Y),(P)->w=(W),(P)->h=(H),(P)->tpage=(T),\
	(P)->u=(U),(P)->v=(V),(P)->cx=(CX),(P)->cy=(CY),(P)->r=(R),(P)->g=(G),(P)->b=(B),\
	(P)->mx=(MX),(P)->my=(MY),(P)->scalex=(SX),(P)->scaley=(SY),(P)->rotate=(R1)

#endif