65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
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#include <stdio.h>
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#define ABS(x) (((x)>0)?(x):(-(x)))
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struct point{
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double x,y;
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};
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struct retangle{
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struct point p1,p2;
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};
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double in_target(struct retangle f_a, struct retangle f_b);
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double field(struct retangle t_a);
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int main(void){
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struct retangle rtg[2], t_rg[2];
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while(scanf("%lf %lf %lf %lf %lf %lf %lf %lf",&rtg[0].p1.x,&rtg[0].p1.y,&rtg[0].p2.x,&rtg[0].p2.y,&rtg[1].p1.x,&rtg[1].p1.y,&rtg[1].p2.x,&rtg[1].p2.y) == 8){
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int max = 0, i, count = 0;
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if(field(rtg[0]) < field(rtg[1])){
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max = 1;
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}
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t_rg[0].p1.x = rtg[max].p1.x;
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t_rg[0].p2.x = rtg[max].p2.x;
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t_rg[1].p1.x = rtg[!max].p1.x;
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t_rg[1].p2.x = rtg[!max].p2.x;
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double t_f = in_target(t_rg[0], t_rg[1]);
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t_rg[0].p1.x = rtg[max].p1.y;
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t_rg[0].p2.x = rtg[max].p2.y;
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t_rg[1].p1.x = rtg[!max].p1.y;
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t_rg[1].p2.x = rtg[!max].p2.y;
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t_f *= in_target(t_rg[0], t_rg[1]);
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printf("%.2lf\n",t_f);
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}
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return 0;
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}
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double in_target(struct retangle f_a, struct retangle f_b){
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int count = 0;
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double x1 = f_a.p1.x, x2 = f_a.p2.x, temp, p_x1, p_x2;
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if(f_a.p1.x > f_a.p2.x){
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temp = x1;
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x1 = x2;
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x2 = temp;
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}
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if(f_b.p1.x > x1 && f_b.p1.x < x2) p_x1 = f_b.p1.x, p_x2 = f_b.p2.x, count++;
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if(f_b.p2.x > x1 && f_b.p2.x < x2) p_x1 = f_b.p2.x, p_x2 = f_b.p1.x, count++;
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double inl = 0.0, a_l = ABS(f_b.p1.x - x1), b_l = ABS(f_b.p2.x - x2);
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if(count == 0) inl = 0.0;
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else if(count == 2) inl = ABS(f_b.p1.x - f_b.p2.x);
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else if(ABS(p_x2 - x1) > ABS(p_x2 - x2)){
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inl = ABS(p_x1 - x2);
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}
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else{
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inl = ABS(p_x1 - x1);
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}
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return inl;
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}
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double field(struct retangle t_a){
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double r_f = ABS(t_a.p1.x - t_a.p2.x) * ABS(t_a.p1.y - t_a.p2.y);
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return r_f;
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}
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