CnC_Remastered_Collection

Command and Conquer: Red Alert
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SURFACE.CPP (5677B)

      1 //
      2 // Copyright 2020 Electronic Arts Inc.
      3 //
      4 // TiberianDawn.DLL and RedAlert.dll and corresponding source code is free 
      5 // software: you can redistribute it and/or modify it under the terms of 
      6 // the GNU General Public License as published by the Free Software Foundation, 
      7 // either version 3 of the License, or (at your option) any later version.
      8 
      9 // TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed 
     10 // in the hope that it will be useful, but with permitted additional restrictions 
     11 // under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT 
     12 // distributed with this program. You should have received a copy of the 
     13 // GNU General Public License along with permitted additional restrictions 
     14 // with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
     15 
     16 /* $Header: /CounterStrike/SURFACE.CPP 1     3/03/97 10:25a Joe_bostic $ */
     17 /***********************************************************************************************
     18  ***              C O N F I D E N T I A L  ---  W E S T W O O D  S T U D I O S               ***
     19  ***********************************************************************************************
     20  *                                                                                             *
     21  *                 Project Name : Command & Conquer                                            *
     22  *                                                                                             *
     23  *                    File Name : SURFACE.CPP                                                  *
     24  *                                                                                             *
     25  *                   Programmer : Joe L. Bostic                                                *
     26  *                                                                                             *
     27  *                   Start Date : 09/08/96                                                     *
     28  *                                                                                             *
     29  *                  Last Update : September 8, 1996 [JLB]                                      *
     30  *                                                                                             *
     31  *---------------------------------------------------------------------------------------------*
     32  * Functions:                                                                                  *
     33  * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
     34 #if (0)//PG
     35 #include "FUNCTION.H"
     36 #include "surface.h"
     37 
     38 
     39 Surface::Surface(int w, int h, Buffer const * buffer, int pitch) :
     40 	Width(w),
     41 	Height(h),
     42 	Pitch(pitch)
     43 {
     44 	/*
     45 	**	If a buffer was specified, then this means that the surface will use the buffer memory
     46 	**	and thus not allocate and manage its own memory.
     47 	*/
     48 	if (buffer != NULL) {
     49 		SurfaceData = *buffer;
     50 
     51 		/*
     52 		**	Reduce the dimensions if the buffer is not big enough. This size bounding is only
     53 		**	possible if the buffer size is known. Otherwise, presume that it is big enough.
     54 		*/
     55 		if (buffer->Get_Size() > 0 && Get_Size() > buffer->Get_Size()) {
     56 
     57 			Height = buffer->Get_Size() / (Width+Pitch);
     58 			if (Height == 0) {
     59 				Height = 1;
     60 				Width = buffer->Get_Size();
     61 			}
     62 		}
     63 	} else {
     64 		/*
     65 		**	A new buffer without existing memory specified, will allocate and manage its
     66 		**	own memory for the surface.
     67 		*/
     68 		new(&SurfaceData) Buffer(Logical_Size());
     69 	}
     70 }
     71 
     72 
     73 Surface::Surface(Surface const & surface, int x, int y, int w, int h) :
     74 	Width(w),
     75 	Height(h),
     76 	Pitch(surface.Bytes_Per_Line() % w)
     77 {
     78 	new(&SurfaceData) Buffer((char*)surface.Get_Buffer() + y*surface.Bytes_Per_Line() + x);
     79 }
     80 
     81 
     82 void Surface::Copy_To(Buffer & buffer, int x, int y, int w, int h) const
     83 {
     84 	assert(buffer.Is_Valid());
     85 
     86 	/*
     87 	**	Determine the width of the region to copy from this surface.
     88 	*/
     89 	int width = w;
     90 	if (width == -1) {
     91 		width = Width;
     92 	}
     93 
     94 	/*
     95 	**	Determine the height of the region to copy from this surface.
     96 	*/
     97 	int height = h;
     98 	if (height == -1) {
     99 		height = Height;
    100 	}
    101 
    102 	Copy_To(Rect(x, y, width, height), buffer);
    103 }
    104 
    105 
    106 void Surface::Copy_To(Rect const & fromrect, Buffer & tobuffer) const
    107 {
    108 	assert(fromrect.Is_Valid());
    109 	assert(tobuffer.Is_Valid());
    110 
    111 	/*
    112 	**	Determine the copy-from rectangle. The size is bounded to the source
    113 	**	size of the surface, regardless of what was specified as the source
    114 	**	rectangle.
    115 	*/
    116 	Rect rect = fromrect.Intersect(Rect(0, 0, Width, Height));
    117 
    118 	/*
    119 	**	Determine the number of bytes to copy. If this number would be
    120 	**	larger than the size of the destination buffer (presuming the size
    121 	**	of the destination buffer is known), then limit the copy size
    122 	**	to the buffer size.
    123 	*/
    124 	int tocopy = rect.Size();
    125 	if (tobuffer.Get_Size() > 0 && tobuffer.Get_Size() > tocopy) {
    126 		tocopy = tobuffer.Get_Size();
    127 	}
    128 
    129 	/*
    130 	**	Determine the source starting byte pointer.
    131 	*/
    132 	char * source = (char*)Get_Buffer() + rect.Y*Bytes_Per_Line() + rect.X;
    133 
    134 	/*
    135 	**	Determine the destination buffer pointer. This will always be the
    136 	**	start of the destination buffer object specified.
    137 	*/
    138 	char * dest = tobuffer;
    139 
    140 	/*
    141 	**	Determine the working pitch value to use. For full width surface
    142 	**	copies on surfaces that have no inherent pitch, then a very fast
    143 	**	copy-in-one-fast-step operation can be performed.
    144 	*/
    145 	int pitch = Bytes_Per_Line() % rect.Width;
    146 	if (pitch == 0) {
    147 		memmove(dest, source, tocopy);
    148 	} else {
    149 
    150 		/*
    151 		**	Copy the source to the destination in line segments.
    152 		*/
    153 		for (int y = 0; y < rect.Height; y++) {
    154 			memmove(dest, source, width);
    155 			dest += rect.Width;
    156 			source += rect.Width + pitch;
    157 		}
    158 	}
    159 }
    160 #endif