From ea1947ffcc606d757357398b24e74a3f4ecefa07 Mon Sep 17 00:00:00 2001 From: neonloop Date: Wed, 20 Oct 2021 14:54:27 +0000 Subject: Initial commit from steward-fu release --- modules/libdraw/Makefile | 609 ++++++++++++++++ modules/libdraw/Makefile.am | 14 + modules/libdraw/Makefile.in | 609 ++++++++++++++++ modules/libdraw/libdraw.c | 1633 +++++++++++++++++++++++++++++++++++++++++++ modules/libdraw/libdraw.h | 51 ++ 5 files changed, 2916 insertions(+) create mode 100644 modules/libdraw/Makefile create mode 100644 modules/libdraw/Makefile.am create mode 100644 modules/libdraw/Makefile.in create mode 100644 modules/libdraw/libdraw.c create mode 100644 modules/libdraw/libdraw.h (limited to 'modules/libdraw') diff --git a/modules/libdraw/Makefile b/modules/libdraw/Makefile new file mode 100644 index 0000000..8e26c38 --- /dev/null +++ b/modules/libdraw/Makefile @@ -0,0 +1,609 @@ +# Makefile.in generated by automake 1.12.1 from Makefile.am. +# libdraw/Makefile. 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installdirs maintainer-clean \ + maintainer-clean-generic mostlyclean mostlyclean-compile \ + mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \ + tags uninstall uninstall-am uninstall-libLTLIBRARIES + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/modules/libdraw/libdraw.c b/modules/libdraw/libdraw.c new file mode 100644 index 0000000..9884ec9 --- /dev/null +++ b/modules/libdraw/libdraw.c @@ -0,0 +1,1633 @@ +/* + * Copyright © 2006-2016 SplinterGU (Fenix/Bennugd) + * Copyright © 2002-2006 Fenix Team (Fenix) + * Copyright © 1999-2002 José Luis Cebrián Pagüe (Fenix) + * + * This file is part of Bennu - Game Development + * + * This software is provided 'as-is', without any express or implied + * warranty. In no event will the authors be held liable for any damages + * arising from the use of this software. + * + * Permission is granted to anyone to use this software for any purpose, + * including commercial applications, and to alter it and redistribute it + * freely, subject to the following restrictions: + * + * 1. The origin of this software must not be misrepresented; you must not + * claim that you wrote the original software. If you use this software + * in a product, an acknowledgment in the product documentation would be + * appreciated but is not required. + * + * 2. Altered source versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * + * 3. This notice may not be removed or altered from any source + * distribution. + * + */ + +/* --------------------------------------------------------------------------- */ + +#include +#include + +#include "bgdrtm.h" + +#include "bgddl.h" +#include "libblit.h" +#include "libdraw.h" +#include "fmath.h" + +/* --------------------------------------------------------------------------- */ + +uint32_t drawing_stipple = 0xFFFFFFFF; + +/* --------------------------------------------------------------------------- */ + +#ifdef __GNUC__ +#define _inline inline +#endif + +_inline void _HLine8_nostipple( uint8_t * ptr, uint32_t length ) +{ + if ( pixel_alpha == 255 ) + { + memset( ptr, pixel_color8, length + 1 ) ; + } + else + { + register int n; + for ( n = length; n >= 0; n--, ptr++ ) + *ptr = pixel_alpha8[( pixel_color8 << 8 ) + *ptr ]; + } +} + +/* --------------------------------------------------------------------------- */ + +_inline void _HLine8_stipple( uint8_t * ptr, uint32_t length ) +{ + register int n; + + if ( pixel_alpha == 255 ) + { + for ( n = length; n >= 0; n--, ptr++ ) + { + if ( drawing_stipple & 1 ) * ptr = pixel_color8; + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + } + } + else + { + for ( n = length; n >= 0; n--, ptr++ ) + { + if ( drawing_stipple & 1 ) * ptr = pixel_alpha8[( pixel_color8 << 8 ) + *ptr ]; + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + } + } +} + +/* --------------------------------------------------------------------------- */ + +_inline void _HLine16_nostipple( uint16_t * ptr, uint32_t length ) +{ + register int n ; + + if ( pixel_alpha == 255 ) + { + for ( n = length; n >= 0; n-- ) *ptr++ = pixel_color16 ; + } + else + { + for ( n = length; n >= 0; n--, ptr++ ) *ptr = pixel_alpha16[ *ptr ] + pixel_color16_alpha ; + } +} + +/* --------------------------------------------------------------------------- */ + +_inline void _HLine16_stipple( uint16_t * ptr, uint32_t length ) +{ + register int n ; + + if ( pixel_alpha == 255 ) + { + for ( n = length; n >= 0; n--, ptr++ ) + { + if ( drawing_stipple & 1 ) * ptr = pixel_color16 ; + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + } + } + else + { + for ( n = length; n >= 0; n--, ptr++ ) + { + if ( drawing_stipple & 1 ) * ptr = pixel_alpha16[ *ptr ] + pixel_color16_alpha ; + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + } + } +} + +/* --------------------------------------------------------------------------- */ + +_inline void _HLine32_nostipple( uint32_t * ptr, uint32_t length ) +{ + register int n ; + + if ( pixel_alpha == 255 && ( pixel_color32 & 0xff000000 ) == 0xff000000 ) + { + for ( n = length; n >= 0; n-- ) *ptr++ = pixel_color32 ; + } + else + { + unsigned int _f = pixel_color32 & 0xff000000, _f2 ; + unsigned int _c1, _c2, _c3 ; + unsigned int r, g, b ; + + _f = ( _f >> 24 ) * pixel_alpha / 255 ; + _f2 = 255 - _f ; + + if ( _f != 0x000000ff ) + { + _c1 = ( pixel_color32 & 0x00ff0000 ) * _f ; + _c2 = ( pixel_color32 & 0x0000ff00 ) * _f ; + _c3 = ( pixel_color32 & 0x000000ff ) * _f ; + + _f <<= 24 ; + + for ( n = length; n >= 0; n-- ) + { + r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ; + g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ; + b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ; + + if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ; + if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ; + if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ; + + *ptr++ = _f | r | g | b ; + } + } + else + { + _c1 = ( pixel_color32 & 0x00ff0000 ) * pixel_alpha ; + _c2 = ( pixel_color32 & 0x0000ff00 ) * pixel_alpha ; + _c3 = ( pixel_color32 & 0x000000ff ) * pixel_alpha ; + + for ( n = length; n >= 0; n-- ) + { + r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ; + g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ; + b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ; + + if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ; + if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ; + if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ; + + *ptr++ = 0xff000000 | r | g | b ; + } + } + } +} + +/* --------------------------------------------------------------------------- */ + +_inline void _HLine32_stipple( uint32_t * ptr, uint32_t length ) +{ + register int n ; + + if ( pixel_alpha == 255 && ( pixel_color32 & 0xff000000 ) == 0xff000000 ) + { + for ( n = length; n >= 0; n-- ) + { + if ( drawing_stipple & 1 ) *ptr = pixel_color32 ; + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + } + } + else + { + unsigned int _f = pixel_color32 & 0xff000000, _f2 ; + unsigned int _c1, _c2, _c3 ; + unsigned int r, g, b ; + + _f = ( _f >> 24 ) * pixel_alpha / 255 ; + _f2 = 255 - _f ; + + if ( _f != 0x000000ff ) + { + _c1 = ( pixel_color32 & 0x00ff0000 ) * _f ; + _c2 = ( pixel_color32 & 0x0000ff00 ) * _f ; + _c3 = ( pixel_color32 & 0x000000ff ) * _f ; + + _f <<= 24 ; + + for ( n = length; n >= 0; n-- ) + { + if ( drawing_stipple & 1 ) + { + r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ; + g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ; + b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ; + + if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ; + if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ; + if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ; + + *ptr++ = _f | r | g | b ; + } + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + } + } + else + { + _c1 = ( pixel_color32 & 0x00ff0000 ) * pixel_alpha ; + _c2 = ( pixel_color32 & 0x0000ff00 ) * pixel_alpha ; + _c3 = ( pixel_color32 & 0x000000ff ) * pixel_alpha ; + + for ( n = length; n >= 0; n-- ) + { + if ( drawing_stipple & 1 ) + { + r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ; + g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ; + b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ; + + if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ; + if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ; + if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ; + + *ptr++ = 0xff000000 | r | g | b ; + } + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + } + } + } +} + +/* --------------------------------------------------------------------------- */ +/* + * FUNCTION : draw_vline + * + * Draw a vertical line + * + * PARAMS : + * dest Destination bitmap or NULL for screen + * clip Clipping region or NULL for the whole screen + * x, y Coordinates of the top-left pixel + * h Height in pixels + * + * RETURN VALUE : + * None + * + */ + +void draw_vline( GRAPH * dest, REGION * clip, int x, int y, int h ) +{ + REGION base_clip ; + int old_stipple = drawing_stipple; + + if ( !dest ) dest = scrbitmap ; + if ( !clip ) + { + clip = &base_clip ; + clip->x = 0 ; + clip->y = 0 ; + clip->x2 = dest->width - 1 ; + clip->y2 = dest->height - 1 ; + } + else + { + base_clip = *clip ; + clip = &base_clip ; + clip->x = MAX( MIN( clip->x, clip->x2 ), 0 ) ; + clip->y = MAX( MIN( clip->y, clip->y2 ), 0 ) ; + clip->x2 = MIN( MAX( clip->x, clip->x2 ), dest->width - 1 ) ; + clip->y2 = MIN( MAX( clip->y, clip->y2 ), dest->height - 1 ) ; + } + + dest->modified = 2 ; + dest->info_flags &= ~GI_CLEAN; + + if ( h < 0 ) h = -h, y -= ( h /*- 1*/ ) ; + + if ( x < clip->x || x > clip->x2 ) return ; + + if ( y < clip->y ) h += y - clip->y, y = clip->y; + if ( y + h > clip->y2 ) h = clip->y2 - y /*+ 1*/ ; + + switch ( dest->format->depth ) + { + case 1: + { + uint8_t * ptr = dest->data; + int mask ; + ptr += dest->pitch * y + ( x >> 3 ) ; + mask = ( 1 << ( 7 - ( x & 7 ) ) ); + if ( drawing_stipple != 0xFFFFFFFF ) + { + while ( h-- >= 0 ) + { + if ( drawing_stipple & 1 ) + { + if ( !pixel_color8 ) + * ptr &= ~mask; + else + *ptr |= mask; + } + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + ptr += dest->pitch ; + } + } + else + { + while ( h-- >= 0 ) + { + if ( !pixel_color8 ) + * ptr &= ~mask; + else + *ptr |= mask; + ptr += dest->pitch ; + } + } + } + + case 8: + { + uint8_t * ptr = dest->data ; + ptr += dest->pitch * y + x ; + if ( drawing_stipple != 0xFFFFFFFF ) + { + while ( h-- >= 0 ) + { + if ( drawing_stipple & 1 ) _Pixel8( ptr, pixel_color8 ) ; + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + ptr += dest->pitch ; + } + } + else + { + while ( h-- >= 0 ) + { + _Pixel8( ptr, pixel_color8 ) ; + ptr += dest->pitch ; + } + } + } + break; + + case 16: + { + uint16_t * ptr = dest->data ; + int inc = dest->pitch >> 1 ; + ptr += inc * y + x ; + if ( drawing_stipple != 0xFFFFFFFF ) + { + while ( h-- >= 0 ) + { + if ( drawing_stipple & 1 ) _Pixel16( ptr, pixel_color16, pixel_color16_alpha ) ; + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + ptr += inc ; + } + } + else + { + while ( h-- >= 0 ) + { + _Pixel16( ptr, pixel_color16, pixel_color16_alpha ) ; + ptr += inc ; + } + } + } + break; + + case 32: + { + uint32_t * ptr = dest->data ; + int inc = dest->pitch >> 2 ; + ptr += inc * y + x ; + if ( drawing_stipple != 0xFFFFFFFF ) + { + if ( pixel_alpha == 255 && ( pixel_color32 & 0xff000000 ) == 0xff000000 ) + { + while ( h-- >= 0 ) + { + if ( drawing_stipple & 1 ) * ptr = pixel_color32 ; + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + ptr += inc ; + } + } + else + { + unsigned int _f = pixel_color32 & 0xff000000, _f2 ; + unsigned int _c1, _c2, _c3 ; + unsigned int r, g, b ; + + _f = ( _f >> 24 ) * pixel_alpha / 255 ; + _f2 = 255 - _f ; + + if ( _f != 0x000000ff ) + { + _c1 = ( pixel_color32 & 0x00ff0000 ) * _f ; + _c2 = ( pixel_color32 & 0x0000ff00 ) * _f ; + _c3 = ( pixel_color32 & 0x000000ff ) * _f ; + + _f <<= 24 ; + + while ( h-- >= 0 ) + { + if ( drawing_stipple & 1 ) + { + r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ; + g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ; + b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ; + + if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ; + if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ; + if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ; + + *ptr = _f | r | g | b ; + } + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + ptr += inc; + } + } + else + { + _c1 = ( pixel_color32 & 0x00ff0000 ) * pixel_alpha ; + _c2 = ( pixel_color32 & 0x0000ff00 ) * pixel_alpha ; + _c3 = ( pixel_color32 & 0x000000ff ) * pixel_alpha ; + + while ( h-- >= 0 ) + { + if ( drawing_stipple & 1 ) + { + r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ; + g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ; + b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ; + + if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ; + if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ; + if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ; + + *ptr = 0xff000000 | r | g | b ; + } + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + ptr += inc; + } + } + } + } + else + { + if ( pixel_alpha == 255 && ( pixel_color32 & 0xff000000 ) == 0xff000000 ) + { + while ( h-- >= 0 ) + { + * ptr = pixel_color32 ; + ptr += inc ; + } + } + else + { + unsigned int _f = pixel_color32 & 0xff000000, _f2 ; + unsigned int _c1, _c2, _c3 ; + unsigned int r, g, b ; + + _f = ( _f >> 24 ) * pixel_alpha / 255 ; + _f2 = 255 - _f ; + + if ( _f != 0x000000ff ) + { + _c1 = ( pixel_color32 & 0x00ff0000 ) * _f ; + _c2 = ( pixel_color32 & 0x0000ff00 ) * _f ; + _c3 = ( pixel_color32 & 0x000000ff ) * _f ; + + _f <<= 24 ; + + while ( h-- >= 0 ) + { + r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ; + g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ; + b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ; + + if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ; + if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ; + if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ; + + *ptr = _f | r | g | b ; + ptr += inc; + } + } + else + { + _c1 = ( pixel_color32 & 0x00ff0000 ) * pixel_alpha ; + _c2 = ( pixel_color32 & 0x0000ff00 ) * pixel_alpha ; + _c3 = ( pixel_color32 & 0x000000ff ) * pixel_alpha ; + + while ( h-- >= 0 ) + { + r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ; + g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ; + b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ; + + if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ; + if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ; + if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ; + + *ptr = 0xff000000 | r | g | b ; + ptr += inc; + } + } + } + } + } + break; + } + + drawing_stipple = old_stipple; +} + +/* --------------------------------------------------------------------------- */ +/* + * FUNCTION : gr_gline + * + * Draw an horizontal line + * + * PARAMS : + * dest Destination bitmap or NULL for screen + * clip Clipping region or NULL for the whole screen + * x, y Coordinates of the top-left pixel + * w Width in pixels + * + * RETURN VALUE : + * None + * + */ + +void draw_hline( GRAPH * dest, REGION * clip, int x, int y, int w ) +{ + REGION base_clip ; + int old_stipple = drawing_stipple; + + if ( !dest ) dest = scrbitmap ; + if ( !clip ) + { + clip = &base_clip ; + clip->x = 0 ; + clip->y = 0 ; + clip->x2 = dest->width - 1 ; + clip->y2 = dest->height - 1 ; + } + else + { + base_clip = *clip ; + clip = &base_clip ; + clip->x = MAX( MIN( clip->x, clip->x2 ), 0 ) ; + clip->y = MAX( MIN( clip->y, clip->y2 ), 0 ) ; + clip->x2 = MIN( MAX( clip->x, clip->x2 ), dest->width - 1 ) ; + clip->y2 = MIN( MAX( clip->y, clip->y2 ), dest->height - 1 ) ; + } + + dest->modified = 2 ; + dest->info_flags &= ~GI_CLEAN; + + if ( w < 0 ) w = -w, x -= ( w /*- 1*/ ) ; + + if ( y < clip->y || y > clip->y2 ) return ; + + if ( x < clip->x ) w += x - clip->x, x = clip->x ; + if ( x + w > clip->x2 ) w = clip->x2 - x /* + 1*/ ; + + switch ( dest->format->depth ) + { + case 1: + { + uint8_t * ptr = dest->data; + int mask ; + ptr += dest->pitch * y + ( x >> 3 ); + mask = ( 1 << ( 7 - ( x & 7 ) ) ); + + if ( drawing_stipple != 0xFFFFFFFF ) + { + while ( w-- > 0 ) + { + if ( drawing_stipple & 1 ) + { + if ( !pixel_color8 ) + * ptr &= ~mask; + else + *ptr |= mask; + } + mask >>= 1; + if ( !mask ) + { + mask = 0x80; + ptr++; + } + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + } + } + else + { + while ( w-- > 0 ) + { + if ( !pixel_color8 ) + * ptr &= ~mask; + else + *ptr |= mask; + mask >>= 1; + if ( !mask ) + { + mask = 0x80; + ptr++; + } + } + } + } + break; + + case 8: + { + uint8_t * ptr = dest->data ; + ptr += dest->pitch * y + x ; + if ( drawing_stipple == 0xFFFFFFFF ) + _HLine8_nostipple( ptr, w ) ; + else + _HLine8_stipple( ptr, w ) ; + } + break; + + case 16: + { + uint16_t * ptr = dest->data ; + ptr += ( dest->pitch >> 1 ) * y + x ; + if ( drawing_stipple == 0xFFFFFFFF ) + _HLine16_nostipple( ptr, w ) ; + else + _HLine16_stipple( ptr, w ) ; + } + break; + + case 32: + { + uint32_t * ptr = dest->data ; + ptr += ( dest->pitch >> 2 ) * y + x ; + if ( drawing_stipple == 0xFFFFFFFF ) + _HLine32_nostipple( ptr, w ) ; + else + _HLine32_stipple( ptr, w ) ; + } + break; + } + + drawing_stipple = old_stipple; +} + +/* --------------------------------------------------------------------------- */ +/* + * FUNCTION : draw_box + * + * Draw a filled rectangle + * + * PARAMS : + * dest Destination bitmap or NULL for screen + * clip Clipping region or NULL for the whole screen + * x, y Coordinates of the top-left pixel + * w Width in pixels + * h Height in pixels + * + * RETURN VALUE : + * None + * + */ + +void draw_box( GRAPH * dest, REGION * clip, int x, int y, int w, int h ) +{ + REGION base_clip ; + + if ( !dest ) dest = scrbitmap ; + if ( !clip ) + { + clip = &base_clip ; + clip->x = 0 ; + clip->y = 0 ; + clip->x2 = dest->width - 1 ; + clip->y2 = dest->height - 1 ; + } + else + { + base_clip = *clip ; + clip = &base_clip ; + clip->x = MAX( MIN( clip->x, clip->x2 ), 0 ) ; + clip->y = MAX( MIN( clip->y, clip->y2 ), 0 ) ; + clip->x2 = MIN( MAX( clip->x, clip->x2 ), dest->width - 1 ) ; + clip->y2 = MIN( MAX( clip->y, clip->y2 ), dest->height - 1 ) ; + } + + dest->modified = 2 ; + dest->info_flags &= ~GI_CLEAN; + + if ( w < 0 ) w = -w, x -= ( w /*- 1*/ ) ; + if ( h < 0 ) h = -h, y -= ( h /*- 1*/ ) ; + + if ( x < clip->x ) w += x - clip->x, x = clip->x ; + if ( y < clip->y ) h += y - clip->y, y = clip->y ; + + if ( x + w > clip->x2 ) w = clip->x2 - ( x /*+ 1*/ ) ; + if ( y + h > clip->y2 ) h = clip->y2 - ( y /*+ 1*/ ) ; + + if ( w < 0 || h < 0 ) return ; + + switch ( dest->format->depth ) + { + case 1: + { + int old_stipple = drawing_stipple; + drawing_stipple = 0xFFFFFFFF; + + while ( h-- >= 0 ) draw_hline( dest, clip, x, y + h, w ); + + drawing_stipple = old_stipple; + } + break; + + case 8: + { + uint8_t * ptr = dest->data ; + ptr += dest->pitch * y + x ; + while ( h-- >= 0 ) + { + _HLine8_nostipple( ptr, w ) ; + ptr += dest->pitch ; + } + } + break; + + case 16: + { + uint16_t * ptr = dest->data ; + int inc = dest->pitch >> 1 ; + ptr += inc * y + x ; + while ( h-- >= 0 ) + { + _HLine16_nostipple( ptr, w ) ; + ptr += inc ; + } + } + break; + + case 32: + { + uint32_t * ptr = dest->data ; + int inc = dest->pitch >> 2 ; + ptr += inc * y + x ; + while ( h-- >= 0 ) + { + _HLine32_nostipple( ptr, w ) ; + ptr += inc ; + } + } + break; + } +} + +/* --------------------------------------------------------------------------- */ +/* + * FUNCTION : draw_rectangle + * + * Draw a rectangle (non-filled) + * + * PARAMS : + * dest Destination bitmap or NULL for screen + * clip Clipping region or NULL for the whole screen + * x, y Coordinates of the top-left pixel + * w Width in pixels + * h Height in pixels + * + * RETURN VALUE : + * None + * + */ + +void draw_rectangle( GRAPH * dest, REGION * clip, int x, int y, int w, int h ) +{ + int stipple = drawing_stipple ; + int iw, ih; + + iw = SGN( w ); + ih = SGN( h ); + + draw_hline( dest, clip, x, y, w - iw ); + if ( h ) draw_vline( dest, clip, x + w, y, h - ih ); + if ( w && h ) draw_hline( dest, clip, x + w, y + h, -( w - iw ) ); + if ( h && w ) draw_vline( dest, clip, x, y + h, -( h - ih ) ); + + drawing_stipple = stipple ; +} + +/* --------------------------------------------------------------------------- */ +/* + * FUNCTION : draw_circle + * + * Draw a circle + * + * PARAMS : + * dest Destination bitmap or NULL for screen + * clip Clipping region or NULL for the whole screen + * x, y Coordinates of the center + * r Radius, in pixels + * + * RETURN VALUE : + * None + * + */ + +void draw_circle( GRAPH * dest, REGION * clip, int x, int y, int r ) +{ + int cx = 0, cy = r; + int lcy = -1; + int df = 1 - r, de = 3, dse = -2 * r + 5; + int old_stipple = drawing_stipple; + REGION base_clip ; + int color = 0; + + if ( !dest ) dest = scrbitmap ; + if ( !clip ) + { + clip = &base_clip ; + clip->x = 0 ; + clip->y = 0 ; + clip->x2 = dest->width - 1 ; + clip->y2 = dest->height - 1 ; + } + else + { + base_clip = *clip ; + clip = &base_clip ; + clip->x = MAX( MIN( clip->x, clip->x2 ), 0 ) ; + clip->y = MAX( MIN( clip->y, clip->y2 ), 0 ) ; + clip->x2 = MIN( MAX( clip->x, clip->x2 ), dest->width - 1 ) ; + clip->y2 = MIN( MAX( clip->y, clip->y2 ), dest->height - 1 ) ; + } + + dest->modified = 2 ; + dest->info_flags &= ~GI_CLEAN; + + if ( dest->format->depth == 8 || dest->format->depth == 1 ) + { + color = pixel_color8; + } + else if ( dest->format->depth == 16 ) + { + color = pixel_color16; + } + else if ( dest->format->depth == 32 ) + { + color = pixel_color32; + } + + do + { + if ( drawing_stipple & 1 ) + { + gr_put_pixelc( dest, clip, x - cx, y - cy, color ) ; + if ( cx ) gr_put_pixelc( dest, clip, x + cx, y - cy, color ) ; + + if ( cy ) + { + gr_put_pixelc( dest, clip, x - cx, y + cy, color ) ; + if ( cx ) gr_put_pixelc( dest, clip, x + cx, y + cy, color ) ; + } + + if ( cx != cy ) + { + gr_put_pixelc( dest, clip, x - cy, y - cx, color ) ; + if ( cy ) gr_put_pixelc( dest, clip, x + cy, y - cx, color ) ; + } + + if ( cx && cy != cx ) + { + gr_put_pixelc( dest, clip, x - cy, y + cx, color ) ; + if ( cy ) gr_put_pixelc( dest, clip, x + cy, y + cx, color ) ; + } + } + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + + lcy = cy; + cx++ ; + if ( df < 0 ) df += de, de += 2, dse += 2 ; + else df += dse, de += 2, dse += 4, cy-- ; + } + while ( cx <= cy ) ; + + drawing_stipple = old_stipple; + +} + +/* --------------------------------------------------------------------------- */ +/* + * FUNCTION : draw_fcircle + * + * Draw a filled circle + * + * PARAMS : + * dest Destination bitmap or NULL for screen + * clip Clipping region or NULL for the whole screen + * x, y Coordinates of the center + * r Radius, in pixels + * + * RETURN VALUE : + * None + * + */ + +void draw_fcircle( GRAPH * dest, REGION * clip, int x, int y, int r ) +{ + int cx = 0, cy = r; + int df = 1 - r, de = 3, dse = -2 * r + 5; + int old_stipple = drawing_stipple; + drawing_stipple = 0xFFFFFFFF; + + do + { + if ( cx != cy ) + { + draw_hline( dest, clip, x - cy, y - cx, cy << 1 /*+1*/ ) ; + if ( cx ) draw_hline( dest, clip, x - cy, y + cx, cy << 1 /*+1*/ ) ; + } + if ( df < 0 ) + { + df += de, de += 2, dse += 2 ; + } + else + { + df += dse, de += 2, dse += 4; + draw_hline( dest, clip, x - cx, y - cy, cx << 1 /*+1*/ ) ; + if ( cy ) draw_hline( dest, clip, x - cx, y + cy, cx << 1 /*+1*/ ) ; + cy-- ; + } + cx++ ; + } + while ( cx <= cy ) ; + + drawing_stipple = old_stipple; +} + +/* --------------------------------------------------------------------------- */ +/* + * FUNCTION : draw_line + * + * Draw a line + * + * PARAMS : + * dest Destination bitmap or NULL for screen + * clip Clipping region or NULL for the whole screen + * x, y Coordinates of the first point + * w, h Distance to the second point + * + * RETURN VALUE : + * None + * + */ + +void draw_line( GRAPH * dest, REGION * clip, int x, int y, int w, int h ) +{ + int n, m, hinc, vinc ; + REGION base_clip ; + int old_stipple = drawing_stipple; + int i1, i2, dd ; + int w1, h1; + + if ( !w ) + { + draw_vline( dest, clip, x, y, h ) ; + return ; + } + + if ( !h ) + { + draw_hline( dest, clip, x, y, w ) ; + return ; + } + + if ( !dest ) dest = scrbitmap ; + if ( !clip ) + { + clip = &base_clip ; + clip->x = 0 ; + clip->y = 0 ; + clip->x2 = dest->width - 1 ; + clip->y2 = dest->height - 1 ; + } + else + { + base_clip = *clip ; + clip = &base_clip ; + clip->x = MAX( MIN( clip->x, clip->x2 ), 0 ) ; + clip->y = MAX( MIN( clip->y, clip->y2 ), 0 ) ; + clip->x2 = MIN( MAX( clip->x, clip->x2 ), dest->width - 1 ) ; + clip->y2 = MIN( MAX( clip->y, clip->y2 ), dest->height - 1 ) ; + } + + dest->modified = 2 ; + dest->info_flags &= ~GI_CLEAN; + + w1 = ABS( w ); + h1 = ABS( h ); + + /* Clipping de la línea - INCORRECTO pero funcional */ + + /* TODO: SE NECESITA CORREGIR CLIPPING EN LINE */ + + if ( x < clip->x ) + { /* izquierda */ + if (( x + w ) < clip->x ) return ; + n = clip->x - x; + m = w ? ( n * h ) / ABS( w ) : 0; + x += n, w -= n, y += m, h -= m ; // if (w == 0) return ; + } + if (( x + w ) < clip->x ) + { /* w < 0 */ + n = clip->x - ( x + w ); + m = w ? ( n * h ) / ABS( w ) : 0; + w += n, h -= m ; // if (w == 0) return ; + } + if ( y < clip->y ) + { /* arriba */ + if (( y + h ) < clip->y ) return ; + m = clip->y - y; + n = h ? ( m * w ) / ABS( h ) : 0; + x += n, w -= n, y += m, h -= m ; // if (h == 0) return ; + } + if (( y + h ) < clip->y ) + { /* h < 0 */ + m = clip->y - ( y + h ); + n = h ? ( m * w ) / ABS( h ) : 0; + w -= n, h += m ; // if (h == 0) return ; + } + if ( x > clip->x2 ) + { /* derecha */ + if (( x + w ) > clip->x2 ) return ; + n = x - clip->x2; + m = w ? ( n * h ) / ABS( w ) : 0; + x -= n, w += n, y += m, h -= m ; // if (w == 0) return ; + } + if (( x + w ) > clip->x2 ) + { /* w > 0 */ + n = ( x + w ) - clip->x2; + m = w ? ( n * h ) / ABS( w ) : 0; + w -= n, h -= m ; // if (w == 0) return ; + } + if ( y > clip->y2 ) + { /* abajo */ + if (( y + h ) > clip->y2 ) return ; + m = y - clip->y2; + n = h ? ( m * w ) / ABS( h ) : 0; + x += n, w -= n, y -= m, h += m ; // if (h == 0) return ; + } + if (( y + h ) > clip->y2 ) + { /* h > 0 */ + m = ( y + h ) - clip->y2; + n = h ? ( m * w ) / ABS( h ) : 0; + w -= n, h -= m ; // if (h == 0) return ; + } + + hinc = ( w > 0 ) ? 1 : -1 ; + vinc = ( h > 0 ) ? dest->pitch : -( int ) dest->pitch ; + + if ( dest->format->depth > 8 ) vinc /= dest->format->depthb; + + /* Aquí va una implementación deprisa y corriendo de Bresenham */ + + w = ABS( w ); + h = ABS( h ); + + if ( w > h ) + { + i1 = 2 * h1; + dd = i1 - w1; + i2 = dd - w1; + dd -= w1 - w; + } + else + { + i1 = 2 * w1; + dd = i1 - h1; + i2 = dd - h1; + dd -= h1 - h; + } + + switch ( dest->format->depth ) + { + case 1: + { + uint8_t * ptr = dest->data + dest->pitch * y + ( x >> 3 ) ; + uint8_t mask, rmask ; + mask = ( 1 << ( 7 - ( x & 7 ) ) ); + + if ( hinc < 0 ) rmask = 0x01 ; + else rmask = 0x80 ; + + if ( w > h ) while ( w-- > 0 ) + { + if ( drawing_stipple & 1 ) + { + if ( !pixel_color8 ) + { + * ptr &= ~mask; + } + else + { + *ptr |= mask; + } + } + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + /* Vertical */ + if ( dd >= 0 ) + { + ptr += vinc, dd += i2 ; + } + else + { + dd += i1 ; + } + /* Horizontal */ + if ( hinc < 0 ) + { + mask <<= 1; + } + else + { + mask >>= 1; + } + if ( !mask ) mask = rmask, ptr += hinc ; + } + else while ( h-- >= 0 ) + { + if ( drawing_stipple & 1 ) + { + if ( !pixel_color8 ) + { + * ptr &= ~mask ; + } + else + { + *ptr |= mask; + } + } + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + /* Vertical */ + ptr += vinc; + if ( dd >= 0 ) + { + dd += i2 ; + /* Horizontal */ + if ( hinc < 0 ) + { + mask <<= 1; + } + else + { + mask >>= 1; + } + if ( !mask ) mask = rmask, ptr += hinc ; + } + else + dd += i1 ; + } + } + break; + + case 8: + { + uint8_t * ptr = ( uint8_t * ) dest->data + dest->pitch * y + x; + + if ( w > h ) while ( w-- > 0 ) + { + if ( drawing_stipple & 1 ) _Pixel8( ptr, pixel_color8 ) ; + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + ptr += hinc; + if ( dd >= 0 ) ptr += vinc, dd += i2 ; + else dd += i1 ; + } + else while ( h-- >= 0 ) + { + if ( drawing_stipple & 1 ) _Pixel8( ptr, pixel_color8 ) ; + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + ptr += vinc; + if ( dd >= 0 ) ptr += hinc, dd += i2 ; + else dd += i1 ; + } + } + break; + case 16: + { + uint16_t * ptr = ( uint16_t * ) dest->data + ( dest->pitch >> 1 ) * y + x; + + if ( w > h ) while ( w-- > 0 ) + { + if ( drawing_stipple & 1 ) _Pixel16( ptr, pixel_color16, pixel_color16_alpha ) ; + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + ptr += hinc; + if ( dd >= 0 ) ptr += vinc, dd += i2 ; + else dd += i1 ; + } + else while ( h-- >= 0 ) + { + if ( drawing_stipple & 1 ) _Pixel16( ptr, pixel_color16, pixel_color16_alpha ) ; + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + ptr += vinc; + if ( dd >= 0 ) ptr += hinc, dd += i2 ; + else dd += i1 ; + } + } + break; + case 32: + { + uint32_t * ptr = ( uint32_t * ) dest->data + ( dest->pitch >> 2 ) * y + x; + + if ( drawing_stipple == 0xffffffff ) + { + if ( w > h ) + { + if ( pixel_alpha == 255 && ( pixel_color32 & 0xff000000 ) == 0xff000000 ) + { + while ( w-- > 0 ) + { + *ptr = pixel_color32 ; + ptr += hinc; + if ( dd >= 0 ) ptr += vinc, dd += i2 ; + else dd += i1 ; + } + } + else + { + unsigned int _f = pixel_color32 & 0xff000000, _f2 ; + unsigned int _c1, _c2, _c3 ; + unsigned int r, g, b ; + + _f = ( _f >> 24 ) * pixel_alpha / 255 ; + _f2 = 255 - _f ; + + if ( _f != 0x000000ff ) + { + _c1 = ( pixel_color32 & 0x00ff0000 ) * _f ; + _c2 = ( pixel_color32 & 0x0000ff00 ) * _f ; + _c3 = ( pixel_color32 & 0x000000ff ) * _f ; + + _f <<= 24 ; + + while ( w-- > 0 ) + { + r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ; + g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ; + b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ; + + if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ; + if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ; + if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ; + + *ptr = _f | r | g | b ; + ptr += hinc; + if ( dd >= 0 ) ptr += vinc, dd += i2 ; + else dd += i1 ; + } + } + else + { + _c1 = ( pixel_color32 & 0x00ff0000 ) * pixel_alpha ; + _c2 = ( pixel_color32 & 0x0000ff00 ) * pixel_alpha ; + _c3 = ( pixel_color32 & 0x000000ff ) * pixel_alpha ; + + while ( w-- > 0 ) + { + r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ; + g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ; + b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ; + + if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ; + if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ; + if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ; + + *ptr = 0xff000000 | r | g | b ; + ptr += hinc; + if ( dd >= 0 ) ptr += vinc, dd += i2 ; + else dd += i1 ; + } + } + } + } + else + { + if ( pixel_alpha == 255 && ( pixel_color32 & 0xff000000 ) == 0xff000000 ) + { + while ( h-- >= 0 ) + { + *ptr = pixel_color32 ; + ptr += vinc; + if ( dd >= 0 ) ptr += hinc, dd += i2 ; + else dd += i1 ; + } + } + else + { + unsigned int _f = pixel_color32 & 0xff000000, _f2 ; + unsigned int _c1, _c2, _c3 ; + unsigned int r, g, b ; + + _f = ( _f >> 24 ) * pixel_alpha / 255 ; + _f2 = 255 - _f ; + + if ( _f != 0x000000ff ) + { + _c1 = ( pixel_color32 & 0x00ff0000 ) * _f ; + _c2 = ( pixel_color32 & 0x0000ff00 ) * _f ; + _c3 = ( pixel_color32 & 0x000000ff ) * _f ; + + _f <<= 24 ; + + while ( h-- >= 0 ) + { + r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ; + g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ; + b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ; + + if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ; + if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ; + if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ; + + *ptr = _f | r | g | b ; + ptr += vinc; + if ( dd >= 0 ) ptr += hinc, dd += i2 ; + else dd += i1 ; + } + } + else + { + _c1 = ( pixel_color32 & 0x00ff0000 ) * pixel_alpha ; + _c2 = ( pixel_color32 & 0x0000ff00 ) * pixel_alpha ; + _c3 = ( pixel_color32 & 0x000000ff ) * pixel_alpha ; + + while ( h-- >= 0 ) + { + r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ; + g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ; + b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ; + + if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ; + if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ; + if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ; + + *ptr = 0xff000000 | r | g | b ; + ptr += vinc; + if ( dd >= 0 ) ptr += hinc, dd += i2 ; + else dd += i1 ; + } + } + } + } + } + else + { + if ( w > h ) + { + if ( pixel_alpha == 255 && ( pixel_color32 & 0xff000000 ) == 0xff000000 ) + { + while ( w-- > 0 ) + { + if ( drawing_stipple & 1 ) *ptr = pixel_color32 ; + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + ptr += hinc; + if ( dd >= 0 ) ptr += vinc, dd += i2 ; + else dd += i1 ; + } + } + else + { + unsigned int _f = pixel_color32 & 0xff000000, _f2 ; + unsigned int _c1, _c2, _c3 ; + unsigned int r, g, b ; + + _f = ( _f >> 24 ) * pixel_alpha / 255 ; + _f2 = 255 - _f ; + + if ( _f != 0x000000ff ) + { + _c1 = ( pixel_color32 & 0x00ff0000 ) * _f ; + _c2 = ( pixel_color32 & 0x0000ff00 ) * _f ; + _c3 = ( pixel_color32 & 0x000000ff ) * _f ; + + _f <<= 24 ; + + while ( w-- > 0 ) + { + if ( drawing_stipple & 1 ) + { + r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ; + g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ; + b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ; + + if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ; + if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ; + if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ; + + *ptr = _f | r | g | b ; + } + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + ptr += hinc; + if ( dd >= 0 ) ptr += vinc, dd += i2 ; + else dd += i1 ; + } + } + else + { + _c1 = ( pixel_color32 & 0x00ff0000 ) * pixel_alpha ; + _c2 = ( pixel_color32 & 0x0000ff00 ) * pixel_alpha ; + _c3 = ( pixel_color32 & 0x000000ff ) * pixel_alpha ; + + while ( w-- > 0 ) + { + if ( drawing_stipple & 1 ) + { + r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ; + g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ; + b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ; + + if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ; + if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ; + if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ; + + *ptr = 0xff000000 | r | g | b ; + } + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + ptr += hinc; + if ( dd >= 0 ) ptr += vinc, dd += i2 ; + else dd += i1 ; + } + } + } + } + else + { + if ( pixel_alpha == 255 && ( pixel_color32 & 0xff000000 ) == 0xff000000 ) + { + while ( h-- >= 0 ) + { + if ( drawing_stipple & 1 ) *ptr = pixel_color32 ; + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + ptr += vinc; + if ( dd >= 0 ) ptr += hinc, dd += i2 ; + else dd += i1 ; + } + } + else + { + unsigned int _f = pixel_color32 & 0xff000000, _f2 ; + unsigned int _c1, _c2, _c3 ; + unsigned int r, g, b ; + + _f = ( _f >> 24 ) * pixel_alpha / 255 ; + _f2 = 255 - _f ; + + if ( _f != 0x000000ff ) + { + _c1 = ( pixel_color32 & 0x00ff0000 ) * _f ; + _c2 = ( pixel_color32 & 0x0000ff00 ) * _f ; + _c3 = ( pixel_color32 & 0x000000ff ) * _f ; + + _f <<= 24 ; + + while ( h-- >= 0 ) + { + if ( drawing_stipple & 1 ) + { + r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ; + g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ; + b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ; + + if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ; + if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ; + if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ; + + *ptr = _f | r | g | b ; + } + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + ptr += vinc; + if ( dd >= 0 ) ptr += hinc, dd += i2 ; + else dd += i1 ; + } + } + else + { + _c1 = ( pixel_color32 & 0x00ff0000 ) * pixel_alpha ; + _c2 = ( pixel_color32 & 0x0000ff00 ) * pixel_alpha ; + _c3 = ( pixel_color32 & 0x000000ff ) * pixel_alpha ; + + while ( h-- >= 0 ) + { + if ( drawing_stipple & 1 ) + { + r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ; + g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ; + b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ; + + if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ; + if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ; + if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ; + + *ptr = 0xff000000 | r | g | b ; + } + drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) ); + ptr += vinc; + if ( dd >= 0 ) ptr += hinc, dd += i2 ; + else dd += i1 ; + } + } + } + } + } + } + } + + drawing_stipple = old_stipple; +} + +/* --------------------------------------------------------------------------- */ +/* + * FUNCTION : draw_bezier + * + * Draw a bezier curve + * + * PARAMS : + * dest Destination bitmap or NULL for screen + * clip Clipping region or NULL for the whole screen + * params Pointer to an integer array with the parameters: + * + * x1, y1 + * x2, y2 + * x3, y3 + * x4, y4 Curve points + * level Curve smoothness (1 to 15, 15 is more) + * + * RETURN VALUE : + * None + * + */ + +void draw_bezier( GRAPH * dest, REGION * clip, int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4, int level ) +{ + float x = ( float ) x1, y = ( float ) y1; + float xp = x, yp = y; + float delta; + float dx, d2x, d3x; + float dy, d2y, d3y; + float a, b, c; + int i; + int n = 1; + + dest->modified = 2 ; + dest->info_flags &= ~GI_CLEAN; + + /* Compute number of iterations */ + + if ( level < 1 ) level = 1; + if ( level >= 15 ) level = 15; + while ( level-- > 0 ) n *= 2; + delta = 1.0f / ( float ) n; + + /* Compute finite differences */ + /* a, b, c are the coefficient of the polynom in t defining the parametric curve */ + /* The computation is done independently for x and y */ + + a = ( float )( -x1 + 3 * x2 - 3 * x3 + x4 ); + b = ( float )( 3 * x1 - 6 * x2 + 3 * x3 ); + c = ( float )( -3 * x1 + 3 * x2 ); + + d3x = 6 * a * delta * delta * delta; + d2x = d3x + 2 * b * delta * delta; + dx = a * delta * delta * delta + b * delta * delta + c * delta; + + a = ( float )( -y1 + 3 * y2 - 3 * y3 + y4 ); + b = ( float )( 3 * y1 - 6 * y2 + 3 * y3 ); + c = ( float )( -3 * y1 + 3 * y2 ); + + d3y = 6 * a * delta * delta * delta; + d2y = d3y + 2 * b * delta * delta; + dy = a * delta * delta * delta + b * delta * delta + c * delta; + + for ( i = 0; i < n; i++ ) + { + x += dx; + dx += d2x; + d2x += d3x; + y += dy; + dy += d2y; + d2y += d3y; + if (( int16_t )( xp ) != ( int16_t )( x ) || ( int16_t )( yp ) != ( int16_t )( y ) ) + { + draw_line( dest, clip, ( int16_t ) xp, ( int16_t ) yp, ( int16_t ) x - ( int16_t ) xp, ( int16_t ) y - ( int16_t ) yp ); + } + xp = x; + yp = y; + } +} + +/* --------------------------------------------------------------------------- */ diff --git a/modules/libdraw/libdraw.h b/modules/libdraw/libdraw.h new file mode 100644 index 0000000..ca4d781 --- /dev/null +++ b/modules/libdraw/libdraw.h @@ -0,0 +1,51 @@ +/* + * Copyright © 2006-2013 SplinterGU (Fenix/Bennugd) + * Copyright © 2002-2006 Fenix Team (Fenix) + * Copyright © 1999-2002 José Luis Cebrián Pagüe (Fenix) + * + * This file is part of Bennu - Game Development + * + * This software is provided 'as-is', without any express or implied + * warranty. In no event will the authors be held liable for any damages + * arising from the use of this software. + * + * Permission is granted to anyone to use this software for any purpose, + * including commercial applications, and to alter it and redistribute it + * freely, subject to the following restrictions: + * + * 1. The origin of this software must not be misrepresented; you must not + * claim that you wrote the original software. If you use this software + * in a product, an acknowledgment in the product documentation would be + * appreciated but is not required. + * + * 2. Altered source versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * + * 3. This notice may not be removed or altered from any source + * distribution. + * + */ + +#ifndef __DRAW_H +#define __DRAW_H + +#include "libgrbase.h" + +/* --------------------------------------------------------------------------- */ + +extern uint32_t drawing_stipple; + +/* --------------------------------------------------------------------------- */ + +void draw_vline( GRAPH * dest, REGION * clip, int x, int y, int h ); +void draw_hline( GRAPH * dest, REGION * clip, int x, int y, int w ); +void draw_box( GRAPH * dest, REGION * clip, int x, int y, int w, int h ); +void draw_rectangle( GRAPH * dest, REGION * clip, int x, int y, int w, int h ); +void draw_circle( GRAPH * dest, REGION * clip, int x, int y, int r ); +void draw_fcircle( GRAPH * dest, REGION * clip, int x, int y, int r ); +void draw_line( GRAPH * dest, REGION * clip, int x, int y, int w, int h ); +void draw_bezier( GRAPH * dest, REGION * clip, int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4, int level ); + +/* --------------------------------------------------------------------------- */ + +#endif -- cgit v1.2.3