Cats don't poop on the floor continuously because they are "mad" at a person. It's either a medical reason, the box is not kept clean enough, it is in a bad location (busy traffic area), another animal is intimidating the cat from using the box, there are not enough boxes for the number of cats, or another cat is causing a cat stress to make him mark his territory (usually done with urine, though). Medical reasons would be my first guess if it is continual.
Cat's prefer to use a litter box, or dirt outside, to poop in. If a cat is defecating outside the box, the first thing to do is to totally clean the litter box. Dump out all the litter and WASH the box, with something that does not leave a scent. Diluted bleach, rinsed very, very well is an excellent choice. Lysol is toxic to cats, so don't use that ever. The boxes need to be washed every week or so, and thrown away when the plastic has absorbed too much urine scent to ever get really cleaned anymore.
If the cat still goes outside the box, take it to the vet for a health check. There are many medical reasons that could cause a cat to go outside the box. People often conclude the cat is just "mad", but then sadly find out weeks later that their cat is suffering from something such as Irritable Bowel Disorder, worms (which can be microscopic so you don't know), etc.
Be sure that there is never any solid waste in the box, as best as is humanly possible. Scoop, scoop, scoop. Change out the litter totally every few days. Urine scented litter will make a cat stop using the box. Cats also have individual preferences for litter. If you suddenly change to a new type of litter (eg clay to pellets) the cat might stop using the box. New types of litters have to be mixed in a little at a time. "Deoderant" scented litters repel many cats. So do air fresheners placed near the box, especially citrus scents.