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439 lines
8.0 KiB
C
439 lines
8.0 KiB
C
//:Header:187, "llgfx_lines", 3b93fb52
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//
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// File: llgfx_lines.h
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//
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// G A M E.O.N.E - LOW LEVEL LIB V1.0
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// Copyright (C) 2001 LEVEL ONE ENTERTAINMENT,
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// Licensed under the terms of LGPL.
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//:---------------------------------------------------------------------------
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//:Description
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//
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#if !defined(LLGFX_LINES_INCLUDED)
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#define LLGFX_LINES_INCLUDED
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#include "lib_base.h"
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#include "ll3d_math.h"
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#include "llgfx.h"
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//:> +------------------------------------+
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//:>-------------------| Global Function Declarations |-------------------
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//:> +------------------------------------+
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//::25
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// +------------------+
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// | Adddirtyrect() |
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// +------------------+
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inline void Adddirtyrect(
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int x1,
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int y1,
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int x2,
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int y2);
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//::24
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// +--------------------+
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// | llgfx_ClipLine() |
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// +--------------------+
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inline bool llgfx_ClipLine(
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int &x1,
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int &y1,
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int &x2,
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int &y2,
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int xmin,
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int ymin,
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int xmax,
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int ymax);
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//::30
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// +----------------------------+
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// | llgfx_DrawGradientLine() |
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// +----------------------------+
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void llgfx_DrawGradientLine(
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llgfx_id idx,
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int x1,
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int y1,
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int x2,
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int y2,
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TxU32 startcolor,
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TxU32 endcolor);
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//::36
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// +----------------------------+
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// | llgfx_DrawGradientRect() |
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// +----------------------------+
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void llgfx_DrawGradientRect(
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llgfx_id idx,
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int x1,
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int y1,
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int x2,
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int y2,
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TxU32 startcolor,
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TxU32 endcolor);
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//::42
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// +----------------------------+
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// | llgfx_DrawGradientRect() |
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// +----------------------------+
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void llgfx_DrawGradientRect(
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llgfx_id idx,
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llgfx_sRECT *dstrect,
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TxU32 startcolor,
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TxU32 endcolor);
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//::26
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// +--------------------+
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// | llgfx_DrawLine() |
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// +--------------------+
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void llgfx_DrawLine(
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llgfx_id idx,
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int x1,
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int y1,
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int x2,
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int y2,
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TxU32 color);
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void llgfx_DrawLine(
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llgfx_id idx,
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float x1,
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float y1,
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float x2,
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float y2,
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TxU32 color);
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//::27
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// +-------------------------+
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// | llgfx_DrawLineAlpha() |
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// +-------------------------+
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void llgfx_DrawLineAlpha(
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llgfx_id idx,
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int x1,
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int y1,
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int x2,
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int y2,
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TxU8 alpha,
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TxU32 color);
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//::31
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// +-----------------------------------+
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// | llgfx_DrawPatternGradientLine() |
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// +-----------------------------------+
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void llgfx_DrawPatternGradientLine(
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llgfx_id idx,
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int x1,
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int y1,
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int x2,
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int y2,
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TxU32 pattern,
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TxU32 startcolor,
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TxU32 endcolor);
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//::37
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// +-----------------------------------+
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// | llgfx_DrawPatternGradientRect() |
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// +-----------------------------------+
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void llgfx_DrawPatternGradientRect(
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llgfx_id idx,
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int x1,
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int y1,
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int x2,
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int y2,
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TxU32 pattern,
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TxU32 startcolor,
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TxU32 endcolor);
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//::43
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// +-----------------------------------+
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// | llgfx_DrawPatternGradientRect() |
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// +-----------------------------------+
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void llgfx_DrawPatternGradientRect(
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llgfx_id idx,
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llgfx_sRECT *dstrect,
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TxU32 pattern,
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TxU32 startcolor,
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TxU32 endcolor);
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//::29
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// +---------------------------+
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// | llgfx_DrawPatternLine() |
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// +---------------------------+
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void llgfx_DrawPatternLine(
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llgfx_id idx,
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int x1,
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int y1,
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int x2,
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int y2,
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TxU32 pattern,
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TxU32 color);
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//::28
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// +--------------------------------+
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// | llgfx_DrawPatternLineAlpha() |
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// +--------------------------------+
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void llgfx_DrawPatternLineAlpha(
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llgfx_id idx,
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int x1,
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int y1,
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int x2,
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int y2,
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TxU32 pattern,
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TxU8 alpha,
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TxU32 color);
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//::34
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// +---------------------------+
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// | llgfx_DrawPatternRect() |
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// +---------------------------+
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void llgfx_DrawPatternRect(
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llgfx_id idx,
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int x1,
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int y1,
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int x2,
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int y2,
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TxU32 pattern,
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TxU32 color);
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//::40
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// +---------------------------+
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// | llgfx_DrawPatternRect() |
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// +---------------------------+
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void llgfx_DrawPatternRect(
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llgfx_id idx,
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llgfx_sRECT *dstrect,
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TxU32 pattern,
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TxU32 color);
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//::35
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// +--------------------------------+
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// | llgfx_DrawPatternRectAlpha() |
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// +--------------------------------+
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void llgfx_DrawPatternRectAlpha(
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llgfx_id idx,
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int x1,
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int y1,
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int x2,
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int y2,
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TxU32 pattern,
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TxU8 alpha,
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TxU32 color);
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//::41
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// +--------------------------------+
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// | llgfx_DrawPatternRectAlpha() |
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// +--------------------------------+
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void llgfx_DrawPatternRectAlpha(
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llgfx_id idx,
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llgfx_sRECT *dstrect,
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TxU32 pattern,
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TxU8 alpha,
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TxU32 color);
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//::32
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// +--------------------+
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// | llgfx_DrawRect() |
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// +--------------------+
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void llgfx_DrawRect(
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llgfx_id idx,
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int x1,
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int y1,
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int x2,
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int y2,
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TxU32 color);
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//::38
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// +--------------------+
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// | llgfx_DrawRect() |
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// +--------------------+
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void llgfx_DrawRect(
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llgfx_id idx,
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llgfx_sRECT *dstrect,
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TxU32 color);
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//::33
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// +-------------------------+
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// | llgfx_DrawRectAlpha() |
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// +-------------------------+
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void llgfx_DrawRectAlpha(
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llgfx_id idx,
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int x1,
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int y1,
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int x2,
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int y2,
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TxU8 alpha,
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TxU32 color);
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//::39
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// +-------------------------+
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// | llgfx_DrawRectAlpha() |
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// +-------------------------+
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void llgfx_DrawRectAlpha(
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llgfx_id idx,
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llgfx_sRECT *dstrect,
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TxU8 alpha,
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TxU32 color);
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//:> +-----------------------------------+
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//:>-------------------| Global Function Definitions |--------------------
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//:> +-----------------------------------+
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//::25
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// +------------------+
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// | Adddirtyrect() |
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// +------------------+
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inline void Adddirtyrect(
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int x1,
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int y1,
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int x2,
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int y2)
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{
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llgfx_sRECT re;
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if( x1 > x2 )
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{
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re.x1=x2;
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re.x2=x1;
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}
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else
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{
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re.x1=x1;
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re.x2=x2;
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}
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if( y1 > y2 )
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{
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re.y1=y2;
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re.y2=y1;
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}
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else
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{
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re.y1=y1;
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re.y2=y2;
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}
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re.x2++;
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re.y2++;
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llgfx_AddDirtyRect(re);
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}
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//::24
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// +--------------------+
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// | llgfx_ClipLine() |
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// +--------------------+
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inline bool llgfx_ClipLine(
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int &x1,
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int &y1,
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int &x2,
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int &y2,
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int xmin,
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int ymin,
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int xmax,
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int ymax)
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{
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bool Inside,Outside;
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char ocu1,ocu2;
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xmax--; ymax--;
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#ifndef CLIP_LEFT
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#define CLIP_LEFT 0x01
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#define CLIP_TOP 0x02
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#define CLIP_RIGHT 0x04
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#define CLIP_BOTTOM 0x08
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#define SetOutCodes(u, x, y) \
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if (x < xmin) u = CLIP_LEFT; else u = 0; \
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if (y < ymin) u |= CLIP_TOP; \
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if (x > xmax) u |= CLIP_RIGHT; \
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if (y > ymax) u |= CLIP_BOTTOM;
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#endif
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#define ISWAP(a,b) { int __tmp__ = a; a = b; b = __tmp__; }
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#define CSWAP(a,b) { char __tmp__ = a; a = b; b = __tmp__; }
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SetOutCodes (ocu1, x1, y1);
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SetOutCodes (ocu2, x2, y2);
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Inside = (ocu1 | ocu2) == 0;
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Outside = (ocu1 & ocu2) != 0;
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while ((!Outside) && (!Inside))
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{
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if (ocu1 == 0) // swap endpoints if necessary
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{ // so that (x1,y1) needs to be clipped
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ISWAP (x1, x2);
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ISWAP (y1,y2);
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CSWAP (ocu1, ocu2);
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}
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if (ocu1 & CLIP_LEFT) // clip left
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{
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y1 = y1 + ((y2 - y1) * (xmin - x1)) / (x2 - x1);
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x1 = xmin;
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}
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else if (ocu1 & CLIP_TOP) // clip above
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{
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x1 = x1 + ((x2 - x1) * (ymin - y1)) / (y2 - y1);
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y1 = ymin;
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}
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else if (ocu1 & CLIP_RIGHT) // clip right
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{
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y1 = y1 + ((y2 - y1) * (xmax - x1)) / (x2 - x1);
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x1 = xmax;
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}
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else if (ocu1 & CLIP_BOTTOM) // clip below
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{
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x1 = x1 + ((x2 - x1) * (ymax - y1)) / (y2 - y1);
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y1 = ymax;
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}
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SetOutCodes (ocu1, x1, y1); // update for (x1,y1)
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Inside = (ocu1 | ocu2) == 0;
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Outside = (ocu1 & ocu2) != 0;
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}
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return Outside;
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}
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// +--------------------+
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// | llgfx_ClipLine() |
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// +--------------------+
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void llgfx_DrawFillRect( llgfx_id idx, int x1, int y1, int x2, int y2, TxU32 color );
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void llgfx_DrawCircle( llgfx_id dstgfx, int x, int y, int radius, TxU32 color);
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void llgfx_DrawCircle( llgfx_id dstgfx, float x, float y, float radius, TxU32 color);
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void llgfx_DrawCircleAlpha( llgfx_id dstgfx, int x, int y, int radius, TxU8 alpha, TxU32 color);
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void llgfx_DrawCircleAlpha( llgfx_id dstgfx, float x, float y, float radius, TxU8 alpha, TxU32 color);
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void llgfx_BeginDrawLines(llgfx_id idx);
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void llgfx_BeginDrawLines(llgfx_id idx, TxU32 color);
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//void llgfx_AddLine( int x, int y);
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//void llgfx_AddLine( int x, int y, TxU32 color);
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void llgfx_EndDrawLines();
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void llgfx_LineColor(TxU32 color);
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#endif // LLGFX_LINES_INCLUDED
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