Eastsun 发表于 2007-6-25 16:34:43

这里有我以前发的一些图形相关的汇编代码:
http://emsky.net/bbs/read.php?tid=14591
里面有画圆的代码

Isword 发表于 2007-6-25 16:36:17

;-----------------------------------------------------------------------
;作圆

CircleA:.MACRO x,y,r,type
LDA #x
STA Graph_x1
LDA #y
STA Graph_y1
LDA #r
STA GraphType
int m_CircleA
    .ENDM
   
CircleB:.MACRO x,y,r,type
LDA #x
STA Graph_x1
LDA #y
STA Graph_y1
LDA #r
STA GraphType
int m_CircleB
    .ENDM
   
;-----------------------------------------------------------------------
;作椭圆

EllipseA:.MACRO x,y,a,b,type
LDA #x
STA Graph_x1
LDA #y
STA Graph_y1
LDA #a
STA Graph_a
LDA #b
STA Graph_b
LDA #type
STA GraphType
int m_EllipseA
    .ENDM
   
EllipseB:.MACRO x,y,a,b,type
LDA x
STA Graph_x1
LDA y
STA Graph_y1
LDA a
STA Graph_a
LDA b
STA Graph_b
LDA type
STA GraphType
int m_EllipseB
    .ENDM

;-----------------------------------------------------------------------

Isword 发表于 2007-6-25 16:36:53

发出来了.

Eastsun 发表于 2007-6-25 16:38:23

楼上用的是系统中断,楼主要原生的代码.

Isword 发表于 2007-6-25 16:40:12

记得NC3000上有直接可以用的画圆和椭圆的中断,可以直接调用的.

Isword 发表于 2007-6-25 16:41:02

哦,那就直接反一下中断好了.

yan 发表于 2007-6-25 16:55:28

谢谢啦。

yan 发表于 2007-6-25 18:48:54

Eastsun的代码只有circle函数?

POTO 发表于 2007-6-25 22:10:35

NC3000.h
晕~我原先竟然没想到！做一个这样的文件对写程序很有用~~
哦……又跑题了！
---------------------------
yan还要ellipse的代码！

Isword 发表于 2007-6-25 22:57:49

引用第9楼POTO于2007-06-25 22:10发表的“”:
NC3000.h
晕~我原先竟然没想到！做一个这样的文件对写程序很有用~~
哦……又跑题了！
---------------------------
yan还要ellipse的代码！
这样写程序才比较有条理,呵呵.

Eastsun 发表于 2007-6-26 00:11:37

引用第8楼yan于2007-06-25 18:48发表的“”:
Eastsun的代码只有circle函数?
嗯,因为Circle的简单,:-)
当初为了写这些代码还研究了一番基本图形生成算法.

leesoft 发表于 2007-6-26 00:13:11

ellipse有普适性

yan 发表于 2007-6-25 16:29:53

[求助]circle和ellipse的汇编代码

本人的汇编太差，写不出来。
哪位高手能将以下的代码用汇编写出来，谢谢了。
void cpoint(int xCenter,int yCenter,int x,int y,int type)
{Point(xCenter+x,yCenter+y,type);
Point(xCenter-x,yCenter+y,type);
Point(xCenter+x,yCenter-y,type);
Point(xCenter-x,yCenter-y,type);
Point(xCenter+y,yCenter+x,type);
Point(xCenter-y,yCenter+x,type);
Point(xCenter+y,yCenter-x,type);
Point(xCenter-y,yCenter-x,type);
}
void circle(int xCenter,int yCenter,int radius,int type)
{int x;
int p;
cpoint(xCenter,yCenter,0,radius,type);
x=0;p=1-radius;
while(x++<radius)
{if(p<0)p=p+(x<<1)+1;
else
   {radius--;
    p=p+((x-radius)<<1)+1;
   }
cpoint(xCenter,yCenter,x,radius,type);
}
}
void epoint(int xCenter,int yCenter,int x,int y,int type)
{Point(xCenter+x,yCenter+y,type);
Point(xCenter-x,yCenter+y,type);
Point(xCenter+x,yCenter-y,type);
Point(xCenter-x,yCenter-y,type);
}
void ellispe(int xCenter,int yCenter,int Rx,int Ry,int type)
{int Rx2,Ry2;
int twoRx2,twoRy2;
long p;
int x,y;
long px,py;
x=0;px=0;
Rx2=Rx*Rx;Ry2=Ry*Ry;
twoRx2=Rx2<<1;twoRy2=Ry2<<1;
y=Ry;py=twoRx2*y;
epoint(xCenter,yCenter,x,y,type);
p=Ry2-Rx2*Ry+((Rx2+2)>>2);
while(px<py)
{x++;px=px+twoRy2;
if(p<0)p=p+Ry2+px;
else
   {y--;
    py=py-twoRx2;
    p=p+Ry2+px-py;
   }
epoint(xCenter,yCenter,x,y,type);
}
p=Ry2*x*x+Ry2*x+Rx2*(y-1)*(y-1)-Rx2*Ry2+((Ry2+2)>>2);
while(y-->0)
{py=py-twoRx2;
if(p>0)p=p+Rx2-py;
else{x++;px=px+twoRy2;p=p+Rx2-py+px;}
epoint(xCenter,yCenter,x,y,type);
}
}
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