TheGameCreators - CodeBase - Splitting image

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Category: Image

Version: 1.0

Information

Uploaded: 15th Aug 2011 04:38

Modified: 1st Jan 1970 01:00

Author: s_i

Summary

Function for splitting image into many small images using memblocks.

Full Description

Function for splitting image (font, animation images) into many small images using memblocks. Translated to C++ from somebody's DarkBacic code (author is unknown).<br /> Russian: ÐÐ°Ñ€ÐµÐ·ÐºÐ° ÐºÐ°Ñ€Ñ‚Ð¸Ð½ÐºÐ¸ Ð½Ð° Ð¼ÐµÐ½ÑŒÑˆÐ¸Ðµ ÐºÐ°Ñ€Ñ‚Ð¸Ð½ÐºÐ¸.

C++ Source Code

` This code was downloaded from The Game Creators

` It is reproduced here with full permission

` http://www.thegamecreators.com

void MyImagesFromImage (int firstImage, int xN, int yN, int Nstart, int Nfinish, int baseImage)

{	int memBlock1=1,memBlock2,iW,iH,iD,imgWidth,imgHeight,mbSize;

int Y,X,image=1,newByte,rows,cols,offset1,offset2,offset3,offset4,imgDWord;

//xN,yN = number of squares: horisontal & vertical

//Nstart,Nfinish = number of first & last used squares (0 if you don't want to use this possibility)

//firstImage = global number of the first saved image in the program

//baseImage = global number of the base image in the program

while (dbMemblockExist(memBlock1)==1) {memBlock1++;}

dbMakeMemblockFromImage (memBlock1,baseImage);

iW = (dbMemblockDword(memBlock1,0));

iH = (dbMemblockDword(memBlock1,4));

iD = (dbMemblockDword(memBlock1,8));

imgWidth=iW/xN;

imgHeight=iH/yN;

mbSize=((imgWidth*imgHeight)+3)*4;

memBlock2=memBlock1+1;

while (dbMemblockExist(memBlock2)==1) {memBlock2++;}

dbMakeMemblock (memBlock2,mbSize);

dbWriteMemblockDword (memBlock2,0,imgWidth);

dbWriteMemblockDword (memBlock2,4,imgHeight);

dbWriteMemblockDword (memBlock2,8,iD);

for (Y=1; Y<=yN; Y++)

{	for (X=1; X<=xN; X++)

{	if (Nstart && (Y-1)*xN+X<Nstart) {continue;}

if (Nfinish && (Y-1)*xN+X>Nfinish) {continue;}

newByte=12;

for (rows=1; rows<=imgHeight; rows++)

{	for (cols=1; cols<=imgWidth; cols++)

{	offset1=(Y-1)*imgWidth*imgHeight*xN;

offset2=(iW*(rows-1));

offset3=imgWidth*(X-1);

offset4=cols-1;

imgDWord=(offset1+offset2+offset3+offset4+3)*4;

dbWriteMemblockDword (memBlock2, newByte, dbMemblockDword(memBlock1,imgDWord));

newByte+=4;

}

dbMakeImageFromMemblock (firstImage+image-1,memBlock2);

image++;

}

dbDeleteMemblock (memBlock1);

dbDeleteMemblock (memBlock2);

}

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Author Name:	s_i
CodeBase Entries:	2

CodeBase - Splitting image