* generate the base grid.
*/
params2->w = params->w / (1.0F + params->expandfactor);
- if (params2->w < 1) params2->w = 1;
- params2->h = params->h * (1.0F + params->expandfactor);
- if (params2->h < 1) params2->h = 1;
+ if (params2->w < 2 && params->w >= 2) params2->w = 2;
+ params2->h = params->h / (1.0F + params->expandfactor);
+ if (params2->h < 2 && params->h >= 2) params2->h = 2;
grid = snewn(params2->w * params2->h, int);