The action painters were led by Jackson Pollock and Willem de Kooning, who worked in a spontaneous improvisatory manner often using large brushes to make sweeping gestural marks. Pollock famously placed his canvas on the ground and danced around it pouring paint from the can or trailing it from the brush or a stick. In this way the action painters directly placed their inner impulses onto the canvas.
the definition of the line and shape can determine mood for instants sharp jagged lines the mood would be intense or stressful however smooth lines are calm and soft.
