This section explains the types of Snap and its usage.
Snap can be used by selecting an icon from the “Tool Options bar” when the “Brush Tool” is selected, by designating from the “Snap” menu, or by pressing a shortcut key.
The types of snaps include the following.
①Snap Off : Snap is not selected.
②Parallel Snap : Users can draw parallel lines.
③Crisscross Snap : Users can draw vertical and horizontal lines.
④Vanishing Point Snap : By setting two lines, you can draw lines in perspective extending from the same vanishing point.
⑤Radial Snap : Users can draw a line extending toward the set point. It can also be used to draw a perspective line with a vanishing point.
⑥Circle Snap : Users can draw concentric circles.
⑦Curve Snap : Users can set up a simple Bezier-like curve guide and draw a line along it.
⑧3D Perspective Snap : Users can draw lines in perspective along with 3D model.
⑨Grid Snap : Users can draw lines along the grid.
⑩Guide Snap : Users can draw lines along the guide.
⑪Snap Settings : Reset the active snap.
Parallel Snap
Users can draw parallel lines.
How to use
①Choose [Parallel Snap]
②Click [Snap Settings] 
to change the snap angle.
③Click any position to fix the snap position.
④Draw a line along the snap.
Crisscross Snap
Users can draw vertical and horizontal lines.
How to use
①Choose [Crisscross Snap]
②The guide will appear and users can draw lines along it.
Vanishing Point Snap
By setting two lines, you can draw lines in perspective extending from the same vanishing point.
How to use
①Choose [Vanishing Point Snap]
②Click [Snap Settings] to change the snap position.
③Click 4 times at any position and set 2 parse lines to decide the snap position.
④Draw a line along the snap.
Radial Snap
Users can draw a line extending toward the set point. It can also be used to draw a perspective line with a vanishing point.
How to use
①Choose [Radial Snap]
②Click [Snap Settings] to change the snap position.
③Click at any position to decide the snap position.
④Draw a line along the snap.
Circle Snap
Users can draw concentric circles.
How to use
①Choose [Circle Snap]
②Click [Snap Settings] to change the snap position.
③Click at any position to decide the snap position.
④Draw a line along the snap.
Curve Snap
Users can set up a simple Bezier-like curve guide and draw a line along it.
How to use
①Choose [Curve Snap]
②Click [Snap Settings] to change the shape of the snap.
③Click at any position to set the curve point.
④Double-click to set the end point of the curve and confirm the snap shape. The confirmed snap can be moved, rotated, scaled and flipped up and down / left and right.
⑤Draw a line along the snap.
3D Perspective Snap
Users can draw lines in perspective along with 3D model.
How to use
①Click [Snap] > [Add 3D Perspective] to add a 3D perspective layer and a three-dimensional object on the canvas. This object can be moved and scaled with the Operation Tool.
②Create a new layer above the 3D perspective layer.
③Choose [3D Perspective Snap]] to draw a line along the perspective of the 3D object.
If you cannot draw a line along the 3D model, click [Snap Settings] , hover to select the object for the perspective, and click to confirm.
How to edit a 3D object
Double-click the 3D perspective layer or click the gear symbol to the right of the layer name to open the [Edit 3D Perspective] dialog box.
[Edit 3D Perspective] dialog box
①Camera Mode : Click to turn on [Camera Mode], then users can change the viewpoint. To turn off [Camera Mode], click again.
②Select Tool : Select the object to be edited.
③Move Tool : Change the position of the object. Drag to move the box horizontally, or right-click and drag to move it up or down.
④Rotation Tool : Rotate the object in X, Y, or Z direction by moving the slider. The slider can be restored to its initial state by right-clicking on it.
⑤Show the Composite Canvas : Composite the image on the canvas.
⑥Ground an Object : Ground the object to the stage.
⑦Here edit objects. Initially, a stage and a box are placed. The box currently selected has the letters X, Y, and Z, and the board has the letters X and Z.
⑧Designate the size of the object and the number of divisions when displaying it in a grid. If the object is a square or cube, users can only edit [Div Num of Short Side]. If a camera is selected, users can edit the angle of view.
⑨Display a list of objects. On the list, the object’s name, type, size, color, and angle (for cameras) are displayed. Double-clicking on an object name opens the [3D Object Property] dialog box where users can rename the object.
⑩ON/OFF object display
⑪Add Box : Add a box object.
⑫Add Plane : Add a plane object.
⑬Add Camera : Add the current viewpoint as a camera. If users select a camera after changing the viewpoint, users can set back camera’s viewpoint.
⑭Duplicate : Duplicate an object or camera.
⑮Delete : Delete an object or camera.
Example of editing an object
Grid Snap
Users can draw lines along the grid.
How to use
①Choose [Grid Snap]
②A grid will be displayed, then draw a line along it.
Grid settings can be changed from the menu [View] > [Grid Settings].
Guide Snap
Users can draw lines along the guide.
How to use
①Set guide from the menu [View] > [Edit Guides].
②Choose [Guide Snap] and draw a line along the snap.
Use Multiple Snap Settings (Save Snap Function)
When multiple snap settings are needed, such as when drawing a two-point or three-point perspective landscape, the [Save Snap] function is useful. Since these settings are saved in the MDP file, the same settings can be used for the next process if saved in MDP format.
①Set [Vanishing Point Snap] or [Radial Snap] corresponding to the first vanishing point. If users know the location of the vanishing point, use [Radial Snap]. If users do not know it, use [Vanishing Point Snap].
②Click [Snap] > [Save Snap] in the menu and name the active snap setting to save. Here, we named it “1” for clarity.
Click [OK] to save the setting. Users can confirm it on the [Snap] menu.
③Click [Snap Settings] and set another snap for the second vanishing point in the same way as ① and ②. In the case of three-point perspective, repeat steps more again.
④By Referring to the [Snap] menu, users can draw without having to set the snap settings for each vanishing point each time.
10 settings can be saved; if more are saved, the former setting will be deleted (the order of them is updated as they are used). Once snap setting is saved, it cannot be individually selected for re-editing or delete.
