You can use the perspective ruler in CLIP STUDIO PAINT to create drawings using perspective.
In this lesson, I’ll show you how to make compositions with two-point perspective. We’ll try drawing equally spaces lines, like floor tiles, using a different method than in the lesson on one-point perspective.
Please read the following article to learn how to use perspective rulers.
 Creating a two-point perspective ruler
To make drawings with two-point perspective, I make a [Perspective ruler].
(1) From the [Tool] palette, I click the [Ruler] tool, then the sub tool [Perspective ruler].
(2) I place vanishing points on the left and right sides. I set the position of a vanishing point by setting two guide lines. Once I have set one vanishing point, the horizontal and vertical lines snap into place.
Left-side vanishing point:
Right-side vanishing point:
You can also create a two-point perspective ruler from the [Layer] menu, by going to [Ruler - Frame] > [Create Perspective Ruler], then, in the [Create Perspective Ruler] dialog box, click [2 point perspective].
However, this will create a perspective ruler with the vanishing points in the center of the canvas. If you have already decided the composition of your drawing in a rough sketch, it is quicker to use the [Perspective ruler] tool.
(3) To put the composition on a slanted angle (rotate the eye level), I use the [Object] tool and drag the plus icon [+] on the eye level to adjust the angle.
To make a composition that looks like it’s filmed at an angle, I draw using a two-point perspective with a tilted eye level.
 Drawing lines at regular intervals using traditional methods
In the lesson on one-point perspective, I explained how to divide shapes equally when the total width is known.
Dividing into two
Dividing into three
When dividing rectangles equally using the intersecting points of diagonal lines, it is easiest if the outline of the rectangle fits on the canvas.
However, in the following image, the space to be divided extends past the edge of the canvas. To divide this equally, we need a different method.
Using this method, we will multiply from the first dividing line. By using a composition like this where the windows of the building extend out of the canvas, I can create a powerful impression.
(1) How to add parallel lines at an equal distance
First, let’s learn how to add parallel lines on a flat surface.
(1) Add a line at any distance you like.
(2) Now draw diagonal lines in the rectangle you made.
(3) At the point where the diagonal lines meet, draw a horizontal line (shown as a green dotted line) to mark the halfway point between the blue lines.
(4) Now draw another diagonal line that crosses the point where this halfway mark meets the vertical line you drew in step (1).
(5) The end of this diagonal line is the same distance as the first red line. At this point, draw another vertical line downwards (shown in red).
(6) Draw the next vertical line in the same way. You can add equally spaced lines using this method.
(2) Drawing with perspective
Using the same method as on a flat surface, I am going to add straight vertical lines at an equal distance according to the perspective.
(1) I draw the first line (shown in red) at a distance I like. I add the diagonal lines (orange) inside this shape and then draw the line (green) to mark the horizontal halfway point.
You can make the green lines and red lines snap onto the [Perspective ruler]. However, the direction of the orange lines is different to the perspective. To draw these straight lines, use the [Pen] tool and click the start point (circled in blue), then hold the [Shift] key and click the end point (circled in red).
(2) I keep adding lines at an equal distance using the method in “(1) How to add parallel lines at an equal distance”.
 Drawing equally spaced lines using the perspective ruler grid
Now let’s try drawing equally spaced lines using the perspective ruler grid function.
(1) After making the [Perspective ruler], I select it using the [Object] tool. When the [Perspective ruler] is selected with the [Object] tool, the plus and circle handles become visible on the ruler.
(2) Select the [Object] tool, and under [Tool property], click so that the grid is displayed. In this example, I want to use the grid for this orange section, so I select the [XY plane] button.
(3) I adjust the lines of the grid to match the window frame by going to the [Tool Property] palette and changing the [Grid size] number, and by moving the green circle on the [Perspective ruler].
(4) Now the intervals are just right.
(5) Under the [View] menu, I turn [Snap to Grid] on, then draw the lines at equal distances.
(6) Using the same method, I adjust the grid and draw more equally spaced lines wherever needed to add detail.
You can use the [Grid] to draw patterns as well as to make equally spaced lines.
To make a brick pattern, use a vector layer and select the [Eraser] tool. On the [Tool Property] palette, choose the [Erase up to intersection] option, then erase the lines you don’t need.