给出多条三维线段 找出首尾相同的顶点并连接一起 用c语言代码实现
时间: 2023-06-05 19:08:13 浏览: 58
以下是一个简单的 C 代码实现,假设所有线段都是由两个点表示的三维线段:
#include <stdio.h>
typedef struct {
float x;
float y;
float z;
} Point;
typedef struct {
Point start;
Point end;
} Line;
int main() {
// 假设有三条线段
Line lines[3] = {
{{0.0, 0.0, 0.0}, {1.0, 1.0, 1.0}},
{{1.0, 1.0, 1.0}, {2.0, 2.0, 2.0}},
{{2.0, 2.0, 2.0}, {0.0, 0.0, 0.0}}
};
// 寻找首尾相同的顶点
Point shared_point;
int found_shared_point = 0;
for (int i = 0; i < 3; i++) {
for (int j = i + 1; j < 3; j++) {
if (lines[i].start.x == lines[j].start.x &&
lines[i].start.y == lines[j].start.y &&
lines[i].start.z == lines[j].start.z) {
shared_point = lines[i].start;
found_shared_point = 1;
break;
} else if (lines[i].start.x == lines[j].end.x &&
lines[i].start.y == lines[j].end.y &&
lines[i].start.z == lines[j].end.z) {
shared_point = lines[i].start;
found_shared_point = 1;
break;
} else if (lines[i].end.x == lines[j].start.x &&
lines[i].end.y == lines[j].start.y &&
lines[i].end.z == lines[j].start.z) {
shared_point = lines[i].end;
found_shared_point = 1;
break;
} else if (lines[i].end.x == lines[j].end.x &&
lines[i].end.y == lines[j].end.y &&
lines[i].end.z == lines[j].end.z) {
shared_point = lines[i].end;
found_shared_point = 1;
break;
}
}
if (found_shared_point) {
break;
}
}
// 输出连接起来后的坐标
printf("(%f, %f, %f) ", shared_point.x, shared_point.y, shared_point.z);
for (int i = 0; i < 3; i++) {
if (shared_point.x == lines[i].start.x &&
shared_point.y == lines[i].start.y &&
shared_point.z == lines[i].start.z) {
printf("(%f, %f, %f) ", lines[i].end.x, lines[i].end.y, lines[i].end.z);
} else {
printf("(%f, %f, %f) ", lines[i].start.x, lines[i].start.y, lines[i].start.z);
}
}
return 0;
}