| #include "mplot.h" | |
| void frame(double xs, double ys, double xf, double yf){ | |
| register double osidex, osidey; | |
| osidex = e1->sidex; | |
| osidey = e1->sidey; | |
| e1->left = e0->left + xs * e0->sidex; | |
| e1->bottom = e0->bottom + ys * e0->sidey; | |
| e1->sidex = (xf-xs)*e0->sidex; | |
| e1->sidey = (yf-ys)*e0->sidey; | |
| e1->scalex *= (e1->sidex / osidex); | |
| e1->scaley *= (e1->sidey / osidey); | |
| e1->quantum=e0->quantum/sqrt(e1->scalex*e1->scalex + | |
| e1->scaley*e1->scaley); | |
| if(e1->quantum < .01) | |
| e1->quantum = .01; | |
| } |