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draw2D.cpp@5:1c78c0b4f513, 2011-02-06 (annotated)

Committer:: Midimetric
Date:: Sun Feb 06 13:30:28 2011 +0000
Revision:: 5:1c78c0b4f513
Parent:: 2:d6e572640dcc

Who changed what in which revision?

User	Revision	Line number	New contents of line
Midimetric	0:601fd83c75e0	1	#include "doggy.h"
Midimetric	0:601fd83c75e0	2
Midimetric	0:601fd83c75e0	3	void DogMLCD::LineH( int x0, int y, int x1, doggy_op raster )
Midimetric	0:601fd83c75e0	4	{
Midimetric	0:601fd83c75e0	5	if( y & 0xFFC0 ) return; // line is out of screen
Midimetric	0:601fd83c75e0	6	BOUND( x0, 0, 127 )
Midimetric	0:601fd83c75e0	7	BOUND( x1, 0, 127 )
Midimetric	0:601fd83c75e0	8	ORDER( x0, x1 )
Midimetric	0:601fd83c75e0	9
Midimetric	0:601fd83c75e0	10	int n = x1 - x0 + 1;
Midimetric	0:601fd83c75e0	11	char* p = b_ + (( y & 0x38 ) << 4) + x0;
Midimetric	0:601fd83c75e0	12	if( raster == poke )
Midimetric	0:601fd83c75e0	13	{
Midimetric	0:601fd83c75e0	14	char b = DOGMLCD_on[ y & 7 ];
Midimetric	0:601fd83c75e0	15	while( n-- )
Midimetric	0:601fd83c75e0	16	*p++ \|= b;
Midimetric	0:601fd83c75e0	17	}
Midimetric	0:601fd83c75e0	18	else if( raster == wipe )
Midimetric	0:601fd83c75e0	19	{
Midimetric	0:601fd83c75e0	20	char b = DOGMLCD_off[ y & 7 ];
Midimetric	0:601fd83c75e0	21	while( n-- )
Midimetric	0:601fd83c75e0	22	*p++ &= b;
Midimetric	0:601fd83c75e0	23	}
Midimetric	0:601fd83c75e0	24	else
Midimetric	0:601fd83c75e0	25	{
Midimetric	0:601fd83c75e0	26	char b = DOGMLCD_on[ y & 7 ];
Midimetric	0:601fd83c75e0	27	while( n-- )
Midimetric	0:601fd83c75e0	28	*p++ ^= b;
Midimetric	0:601fd83c75e0	29	}
Midimetric	0:601fd83c75e0	30	}
Midimetric	0:601fd83c75e0	31	void DogMLCD::LineV( int x, int y0, int y1, doggy_op raster )
Midimetric	0:601fd83c75e0	32	{
Midimetric	0:601fd83c75e0	33	if( x & 0xFF80 ) return; // line is out of screen
Midimetric	0:601fd83c75e0	34	BOUND( y0, 0, 63 )
Midimetric	0:601fd83c75e0	35	BOUND( y1, 0, 63 )
Midimetric	0:601fd83c75e0	36	ORDER( y0, y1 )
Midimetric	0:601fd83c75e0	37	RasterOp op = ((RasterOp[]){ &DogMLCD::Poke, &DogMLCD::Wipe, &DogMLCD::Inv })[raster];
Midimetric	0:601fd83c75e0	38	for( int y = y0 ; y <= y1 ; y++ )
Midimetric	0:601fd83c75e0	39	(this->*op)( x, y );
Midimetric	0:601fd83c75e0	40	}
Midimetric	5:1c78c0b4f513	41	void DogMLCD::Line( int x0, int y0, int x1, int y1, doggy_op raster )
Midimetric	5:1c78c0b4f513	42	{
Midimetric	5:1c78c0b4f513	43	bool steep = abs( y1 - y0 ) > abs( x1 - x0 );
Midimetric	5:1c78c0b4f513	44	if( steep ) { SWAP( x0, y0 ) SWAP( x1, y1 ) }
Midimetric	5:1c78c0b4f513	45	if( x0 > x1) { SWAP( x0, x1 ) SWAP( y0, y1 ) }
Midimetric	5:1c78c0b4f513	46
Midimetric	5:1c78c0b4f513	47	int dx = x1 - x0;
Midimetric	5:1c78c0b4f513	48	int dy = abs( y1 - y0 );
Midimetric	5:1c78c0b4f513	49	int e = dx / 2;
Midimetric	5:1c78c0b4f513	50	int ystep = y0 < y1 ? 1 : -1;
Midimetric	5:1c78c0b4f513	51	RasterOp op = ((RasterOp[]){ &DogMLCD::Poke, &DogMLCD::Wipe, &DogMLCD::Inv })[raster];
Midimetric	5:1c78c0b4f513	52
Midimetric	5:1c78c0b4f513	53	if( steep ) for( int x = x0, y = y0 ; x <= x1 ; x++ )
Midimetric	5:1c78c0b4f513	54	{
Midimetric	5:1c78c0b4f513	55	(this->*op)( y, x );
Midimetric	5:1c78c0b4f513	56	if( ( e -= dy ) < 0 )
Midimetric	5:1c78c0b4f513	57	{
Midimetric	5:1c78c0b4f513	58	y += ystep;
Midimetric	5:1c78c0b4f513	59	e += dx;
Midimetric	5:1c78c0b4f513	60	}
Midimetric	5:1c78c0b4f513	61	}
Midimetric	5:1c78c0b4f513	62	else for( int x = x0, y = y0 ; x <= x1 ; x++ )
Midimetric	5:1c78c0b4f513	63	{
Midimetric	5:1c78c0b4f513	64	(this->*op)( x, y );
Midimetric	5:1c78c0b4f513	65	if( ( e -= dy ) < 0 )
Midimetric	5:1c78c0b4f513	66	{
Midimetric	5:1c78c0b4f513	67	y += ystep;
Midimetric	5:1c78c0b4f513	68	e += dx;
Midimetric	5:1c78c0b4f513	69	}
Midimetric	5:1c78c0b4f513	70	}
Midimetric	5:1c78c0b4f513	71	}
Midimetric	0:601fd83c75e0	72	void DogMLCD::Frame( int x0, int y0, int x1, int y1, doggy_op raster )
Midimetric	0:601fd83c75e0	73	{
Midimetric	0:601fd83c75e0	74	ORDER( x0, x1 )
Midimetric	0:601fd83c75e0	75	ORDER( y0, y1 )
Midimetric	0:601fd83c75e0	76
Midimetric	0:601fd83c75e0	77	LineH( x0, y0, x1, raster );
Midimetric	0:601fd83c75e0	78	if( y1 > y0 ) LineH( x0, y1, x1, raster );
Midimetric	0:601fd83c75e0	79
Midimetric	0:601fd83c75e0	80	y0++; // don't overlap at angles
Midimetric	0:601fd83c75e0	81	y1--;
Midimetric	0:601fd83c75e0	82	if( y1 >= y0 ) // don't overlap if horizontal lines where adjacent
Midimetric	0:601fd83c75e0	83	{
Midimetric	0:601fd83c75e0	84	LineV( x0, y0, y1, raster );
Midimetric	0:601fd83c75e0	85	if( x1 > x0 ) LineV( x1, y0, y1, raster );
Midimetric	0:601fd83c75e0	86	}
Midimetric	0:601fd83c75e0	87	}
Midimetric	2:d6e572640dcc	88	void DogMLCD::Rect( int x0, int y0, int x1, int y1, const unsigned char* p, doggy_op raster )
Midimetric	0:601fd83c75e0	89	{
Midimetric	0:601fd83c75e0	90	BOUND( x0, 0, 127 )
Midimetric	0:601fd83c75e0	91	BOUND( x1, 0, 127 )
Midimetric	0:601fd83c75e0	92	BOUND( y0, 0, 63 )
Midimetric	0:601fd83c75e0	93	BOUND( y1, 0, 63 )
Midimetric	0:601fd83c75e0	94	ORDER( x0, x1 )
Midimetric	0:601fd83c75e0	95	ORDER( y0, y1 )
Midimetric	2:d6e572640dcc	96	RasterOp op = ((RasterOp[]){ &DogMLCD::Poke, &DogMLCD::Wipe, &DogMLCD::Inv })[raster];
Midimetric	0:601fd83c75e0	97	for( int x = x0 ; x <= x1 ; x++ )
Midimetric	0:601fd83c75e0	98	for( int y = y0 ; y <= y1 ; y++ )
Midimetric	0:601fd83c75e0	99	if( p[x & 7] & ( 1 << ( y & 7 ) ) )
Midimetric	2:d6e572640dcc	100	(this->*op)( x, y );
Midimetric	0:601fd83c75e0	101	}

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Type:	Library
Created:	29 Dec 2010
Imports:	36
Forks:	0
Commits:	6
Dependents:	0
Dependencies:	0
Followers:	2

draw2D.cpp@5:1c78c0b4f513, 2011-02-06 (annotated)

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