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資源簡介

設(shè)計(jì)和實(shí)現(xiàn)一個(gè)圖形函數(shù)庫,具有繪制直線段、任意圓弧、橢圓弧、多邊形區(qū)域的陰影填充和顏色填充等功能。(僅調(diào)用畫點(diǎn)函數(shù))

資源截圖

代碼片段和文件信息

#include?
#include?
#include
void?DDA(HDC?hdcint?x0int?y0int?xnint?yn)
{
/*確定增量dxdy*/
int?max;
double?dxdy;
int?d_x=abs(xn-x0);
int?d_y=abs(yn-y0);
if(d_x>=d_y)
max=d_x;
else
max=d_y;
dx=(xn-x0)/max;
dy=(yn-y0)/max;
/*繪點(diǎn)*/
double?xi=x0yi=y0;
int?pix_x=floor(xi)pix_y=floor(yi);
????SetPixel(hdcpix_xpix_yRGB(232423));
????for(int?i=0;i!=max;++i){
xi+=dx;
yi+=dy;
????????pix_x=floor(xi);
pix_y=floor(yi);
????????SetPixel(hdcpix_xpix_yRGB(232423));
}

}

void?Bresenham(HDC?hdc?int?x1?int?y1?int?x2?int?y2)
{
int?x?y?dx?dy?e;
dx?=?abs(x2?-?x1);
dy?=?abs(y2?-?y1);
e?=?2?*?dy?-?dx;
x?=?x1;
y?=?y1;
for?(int?i?=?0;?i? SetPixel(hdc?x?y?RGB(0?0?0));
if?(e?>=?0)?{
y++;
e?=?e?-?2?*?dx;
}
x++;
e?=?e?+?2?*?dy;
}

return;
}

void?RoundArc(HDC?hdc?int?x?int?y?int?r)
{
int?X?Y?d;
X?=?x;
Y?=?y?-?r;
d?=?(y?-?Y)*(y?-?Y)?+?(Y?+?1?-y)*(Y?+?1?-y)?-?2?*?r?*?r?;

????while((X?-?x)?<=?(y?-?Y))
{
if(d?>=?0)
{
????Y++;
d?=?d?+?4*(X?+?Y)-4*(x?+?y)?+?10;
????????}
else
{
d?=?d?+?4*X?-?4*x?+6;
}

SetPixel(hdc?X?Y?RGB(0?0?0));
SetPixel(hdc?(2?*?x?-?X)?YRGB(0?0?0));
SetPixel(hdc?X?(2?*?y?-?Y)?RGB(0?0?0));
SetPixel(hdc?(2?*?x?-?X)?(2?*?y?-?Y)?RGB(0?0?0));
SetPixel(hdc?(x?+?(y?-?Y))?(y?-(X?-?x))RGB(0?0?0));
SetPixel(hdc?(x?+?(y?-?Y))?(y?+(X?-?x))RGB(0?0?0));
SetPixel(hdc?(x?-?(y?-?Y))?(y?-(X?-?x))RGB(0?0?0));
SetPixel(hdc?(x?-?(y?-?Y))?(y?+(X?-?x))RGB(0?0?0));

X++;
}
}


void?EllipseArc(HDC?hdc?int?x?int?y?int?a?int?b)
{
float?t?=?0?dt?=?0.001;
int?x1?=?x?+?a?y1?=?y?x2?y2;
while?(t? t?+=?dt;
x2?=?x?+?(int)(a?*?cos(t));
y2?=?y?+?(int)(b?*?sin(t));
Bresenham(hdc?x1?y1?x2?y2);
x1?=?x2;
y1?=?y2;
}
}

void?bubbleSort(double?array[][2]int?size)
{
bool?changed=true;
int?n=0;
do{
changed=false;
for(int?i=0;i if(array[i][0]>array[i+1][0]){
int?temp;
temp=array[i][0];
array[i][0]=array[i+1][0];
array[i+1][0]=temp;
temp=array[i][1];
array[i][1]=array[i+1][1];
array[i+1][1]=temp;
changed=true;
}
}
n++;
}while(changed);
}


void?shadowFill(HDC?hdcint?P[][2]int?mnint?mdouble?hdouble?a)
{
const?double?k=1.0;
const?double?db=3.0;
double?B[8][2];
int?ij;
for(i=0;(i+1)<=(m-1);++i){
B[i][0]=(double)(P[i][1]-k*P[i][0]);
B[i][1]=(double)(P[i+1][1]-k*P[i+1][0]);
if(B[i][0]>B[i][1]){
double?temp=B[i][0];
B[i][0]=B[i][1];
B[i][1]=temp;
}
}
B[m-1][0]=(double)(P[m-1][1]-k*P[m-1][0]);
B[m-1][1]=(double)(P[0][1]-k*P[0][0]);
if(B[m-1][0]>B[m-1][1]){
double?temp=B[m-1][0];
????B[m-1][0]=B[m-1][1];
B[m-1][1]=temp;
}
for(i=m;(i+1)<=(mn-1);++i){
B[i][0]=(double)(P[i][1]-k*P[i][0]);
B[i][1]=(double)(P[i+1][1]-k*P[i+1

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