PaintTool SAI also features perspective rulers including 1VP, 2VP, 3VP, 2VP grid, and 3VP grid.PaintTool SAI has five main ruler options in the ruler menu: Straight, Ellipse, Parallel Lines, Concentric Ellipse, and Vanishing Point.
How to Use PaintTool SAI’s One-Point Perspective Ruler.How to Use PaintTool SAI’s Concentric Ellipse Ruler.How to Use PaintTool SAI’s Parallel Lines Ruler.How to Use PaintTool SAI’s Ellipse Ruler.How to Use PaintTool SAI’s Straight Ruler.