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player/Project/Src/MyWin/MyWinCore/mywin_lib.c

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2025-06-27 00:32:57 +08:00
#include "mywin_inc.h"
/******************队列操作相关函数**********************/
//初始化已实例化的队列
void QUEUE_Init (QUEUE_Struct *q,int blocksize,int blocknum)
{
q->queueByteSize=blocksize*blocknum;
q->blockByteSize=blocksize;
q->data=mymalloc (q->queueByteSize);
q->inPointer=q->data;
q->outPointer=q->data;
}
//销毁队列
void QUEUE_Delete (QUEUE_Struct *q)
{
myfree(q->data);
q->data=0;
}
//出队,如果队列为空返回0否则返回1
int QUEUE_Out (QUEUE_Struct *q,void *buff)
{
int ret=0;
if (q->data==0) return ret;
if ((q->outPointer!=q->inPointer)||q->fill==1)
{
ret=1;
mymemcpy (buff,q->outPointer,q->blockByteSize);
q->outPointer+=q->blockByteSize;
if (q->outPointer>=q->data+q->queueByteSize)
q->outPointer=q->data;
q->fill=0;//队列非满
}
return ret;
}
//入队如果队列已满返回1并且本次入队失败
int QUEUE_In (QUEUE_Struct *q,void *block)
{
if (q->data==0) return 1;
if (q->fill==1) return 1;
mymemcpy (q->inPointer,block,q->blockByteSize);
q->inPointer+=q->blockByteSize;
if (q->inPointer>=q->data+q->queueByteSize)
q->inPointer=q->data;
if (q->inPointer==q->outPointer)//如果入队指针和出队指针相等,则队列满
q->fill=1;
return 0;
}
//查看初始化
int QUEUE_CheckStart (QUEUE_Struct *q)
{
if (q->data==0) return 1;
q->checkPointer=q->checkPointer=q->outPointer;
if ((q->checkPointer!=q->inPointer)||q->fill==1)
q->checkEnd=0;
else q->checkEnd=1;
return 0;
}
//查看数据还有数据返回没有数据返回0
void *QUEUE_Check (QUEUE_Struct *q)
{
void *ret=0;
if (q->data==0) return ret;
if (q->checkEnd==0)
{
ret=q->checkPointer;
q->checkPointer+=q->blockByteSize;
if (q->checkPointer>=q->data+q->queueByteSize)
q->outPointer=q->data;
if (q->checkPointer==q->inPointer) q->checkEnd=1;
}
return ret;
}
/****************坐标计算*************************/
//判断两个点的距离是否超过了半径没超过返回0超过了返回非0
int POS_RoundPix (int r,int x1,int y1,int x2,int y2)
{
if ((x1-x2>r)||(x2-x1>r))
return -1;
if ((y1-y2>r)||(y2-y1>r))
return -1;
return 0;
}
//判断指定点是否在矩形内,1,在0不在
int POS_InRect (int rect_x,int rect_y,int rect_x_size,int rect_y_size,int x,int y)
{
if (((x>=rect_x)&&(x<=rect_x+rect_x_size-1))&&
((y>=rect_y)&&(y<=rect_y+rect_y_size-1)))
{
return 1;
}
else
{
return 0;
}
}
//两个矩形求交集,有交集返回1
int POS_RectIntersection (RECT_Struct *out,RECT_Struct *r1,RECT_Struct *r2)
{
//取得新矩形的左上角
int x_s=r1->x;
int y_s=r1->y;
if (x_s<r2->x)
x_s=r2->x;
if (y_s<r2->y)
y_s=r2->y;
//取得新矩形的右下角
int x_e=r1->x+r1->x_size-1;
int y_e=r1->y+r1->y_size-1;
if (x_e>r2->x+r2->x_size-1)
x_e=r2->x+r2->x_size-1;
if (y_e>r2->y+r2->y_size-1)
y_e=r2->y+r2->y_size-1;
out->x=x_s;
out->y=y_s;
out->x_size=x_e-x_s+1;
out->y_size=y_e-y_s+1;
if ((y_e>=y_s)&&(x_e>=x_s))
{
return 1;
}
else
{
return 0;
}
}
//求一个大矩形,包含两个小矩形
int POS_RectContain (RECT_Struct *out,RECT_Struct *r1,RECT_Struct *r2)
{
//取得新矩形的左上角
int x_s=r1->x;
int y_s=r1->y;
if (x_s>r2->x)
x_s=r2->x;
if (y_s>r2->y)
y_s=r2->y;
//取得新矩形的右下角
int x_e=r1->x+r1->x_size-1;
int y_e=r1->y+r1->y_size-1;
if (x_e<r2->x+r2->x_size-1)
x_e=r2->x+r2->x_size-1;
if (y_e<r2->y+r2->y_size-1)
y_e=r2->y+r2->y_size-1;
out->x=x_s;
out->y=y_s;
out->x_size=x_e-x_s+1;
out->y_size=y_e-y_s+1;
return 1;
}
//两个矩形相减如果r2大于r1,则输出为空矩形
int POS_RectSub (RECT_Struct *out,RECT_Struct *r1,RECT_Struct *r2)
{
RECT_Struct temp={0};
out->x=r1->x;
out->y=r1->y;
out->x_size=r1->x_size;
out->y_size=r1->y_size;
if(POS_RectIntersection(&temp,r1,r2))
{
//如果两个矩形有交集
if(temp.x_size<r1->x_size&&temp.y_size<r1->y_size)
{
//新矩形长和宽都小于原矩形,结果不受影响
return 1;
}
else if((temp.x>r1->x&&(temp.x+temp.x_size<r1->x+r1->x_size))||
(temp.y>r1->y&&(temp.y+temp.y_size<r1->y+r1->y_size)))
{
//新矩形在原矩形的中间,结果不受影响
return 1;
}
else if(POS_RectEqual(&temp,r1))
{
//新矩形与原矩形相等结果返回0
out->x=0;
out->x_size=0;
out->y=0;
out->y_size=0;
return 0;
}
else if(temp.x_size==r1->x_size)
{
//新矩形与原矩形的宽相等
if(r1->y==temp.y)
out->y+=temp.y_size;
out->y_size-=temp.y_size;
return 1;
}
else if(temp.y_size==r1->y_size)
{
//新矩形与原矩形的高相等
if(r1->x==temp.x)
out->x+=temp.x_size;
out->x_size-=temp.x_size;
return 1;
}
}
//其他情况,结果不受影响
return 1;
}
//判断两个矩形相等是返回1不是返回0
int POS_RectEqual (RECT_Struct *r1,RECT_Struct *r2)
{
if(r1->x==r2->x&&r1->y==r2->y&&r1->x_size==r2->x_size&&r1->y_size==r2->y_size)
return 1;
else
return 0;
}