home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Risc World 3
/
Risc World 3.iso
/
SOFTWARE
/
ISSUE6
/
PD
/
PDF
/
DrawFile
/
c++
/
GuiDrawFileSprite
< prev
next >
Wrap
Text File
|
2003-02-14
|
5KB
|
150 lines
//--------------------------------------------------------------------------
//
// Copyright (c) 2002, Colin Granville
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or
// without modification, are permitted provided that the following
// conditions are met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials
// provided with the distribution.
//
// * The name Colin Granville may not be used to endorse or promote
// products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
// OF THE POSSIBILITY OF SUCH DAMAGE.
//
//--------------------------------------------------------------------------
#include "GuiDrawFileSprite.h"
GuiDrawFileSprite::GuiDrawFileSprite(GuiDrawFile& d)
: drawfile(d)
{
}
//***************************************************************
GuiDrawFileSprite::~GuiDrawFileSprite()
{
}
//***************************************************************
void GuiDrawFileSprite::start(int width_pix,int height_pix,int bpp)
{
startPos=drawfile.startObject(sizeof(GuiDrawFileGraphicsObject) +
sizeof(GuiTransform) +
sizeof(GuiDrawFileSpriteBlock));
if (drawfile.hasFailed()) return;
sprite.offsetToMask=-1;
int* p=(int*)sprite.name;
p[0]= 's';p[1]=p[2]=0;
if (bpp>16) {bpp=32;sprite.mode = (6<<27) | (90<<14) | (90<<1) | 1;}
else if (bpp>8) {bpp=16;sprite.mode = (5<<27) | (90<<14) | (90<<1) | 1;}
else if (bpp>4) {bpp=8; sprite.mode = 28;}
else if (bpp>2) {bpp=4; sprite.mode = 27;}
else if (bpp>1) {bpp=2; sprite.mode = 26;}
else {bpp=1; sprite.mode = 25;}
sprite.leftHandWastage = 0;
sprite.height = height_pix-1;
int bits=width_pix*bpp-1;
sprite.width = bits/32;
sprite.lastBitUsed = bits & 31;
if (height_pix*width_pix > (1024*512))
{
int spriteSize=(bits/8)*height_pix;
if (sprite.mode>>27)
{
int bits=(sprite.width*32) + sprite.lastBitUsed;
int pix=((bits+1) >> ((sprite.mode >> 27)-1));
spriteSize += (4*(pix + 31)/32);
}
else
spriteSize*=2;
drawfile.ensureMem(spriteSize+(1024*4));
}
}
//***************************************************************
void GuiDrawFileSprite::startImage()
{
sprite.offsetToImage = drawfile.getSize() -
startPos -
sizeof(GuiDrawFileGraphicsObject) -
sizeof(GuiTransform);
if (sprite.offsetToMask==-1) sprite.offsetToMask = sprite.offsetToImage;
}
//***************************************************************
void GuiDrawFileSprite::startMask()
{
sprite.offsetToMask = drawfile.getSize() -
startPos -
sizeof(GuiDrawFileGraphicsObject) -
sizeof(GuiTransform);
}
//***************************************************************
void GuiDrawFileSprite::startMaskFill()
{
unsigned int words = sprite.width+1;
if (sprite.mode>>27)
{
int bits=(sprite.width*32) + sprite.lastBitUsed;
int pix=((bits+1) >> ((sprite.mode >> 27)-1));
words = (pix + 31)/32;
}
words*= (sprite.height+1);
startMask();
for (;words;words--) put(0u);
}
//***************************************************************
void GuiDrawFileSprite::end(const GuiTransform& transform, const GuiBBox& bounds)
{
if (drawfile.hasFailed()) return;
GuiDrawFileGraphicsObject& object = *(GuiDrawFileGraphicsObject*)drawfile.getPtr(startPos);
object.typeId = OBJECT_ID;
object.size = drawfile.getSize() - startPos;
object.bounds = bounds;
*(GuiTransform*) ( (char*)(&object+1) ) = transform;
sprite.size=object.size - sizeof(GuiDrawFileGraphicsObject) - sizeof(GuiTransform);
*(GuiDrawFileSpriteBlock*)( (char*)(&object+1) + sizeof(GuiTransform) ) = sprite;
drawfile.addBBox(bounds);
drawfile.endObject();
}