Porthole

A dynamic gradient shader effect featuring diagonal parallel stripes that create a sense of depth and movement. The composition uses a linear gradient transitioning from cyan/turquoise (#68cac5) on the left side to deep purple (#6205aa) on the right side. The gradient flows horizontally across the canvas at a 0-degree angle. Overlaid on this base gradient is a sawtooth wave distortion effect with a frequency of 7.7 and strength of 2, creating sharp, angular ridge-like patterns that run diagonally across the image. The wave distortion is modulated by an invisible circular mask positioned at the top-center of the canvas (coordinates 0.5, 0 with radius 1.8), which controls the angle variation of the waves between 70 and 110 degrees. This creates a subtle directional shift in the wave patterns from left to right. The overall effect produces a three-dimensional appearance with parallel diagonal bands that appear to fold and recede into space, creating a modern, sleek aesthetic with smooth color transitions and crisp geometric distortion patterns. The lighting and shading suggest depth, with the stripes appearing to cast subtle shadows on adjacent surfaces.