Now in the curve tab, we use the “Perp Frames” component which generates perpendicular frames on the given curve and uses those frames as section planes for Brep|Plane component. Use the curve component and import that line as a curve into grasshopper. To define those planes first we need to draw a line with the length of the bench in rhino. The Brep|Plane component needs section planes as input. The Contour component needs a starting point and a distance so if we don’t have the exact length of the bench and don’t set the distance according to the length, the last section doesn’t align with the other side of the bench, and we are going to have a bigger or smaller distance between our sections in the end. In the Intersection > Mathematical we have two options: “Contour” and “Brep|Plane”.
#BREP COMPONENTS GRASSHOPPER RHINO 5 SERIES#
The next step is to produce a series of sections on this form. We can do it for both sides of the bench and now we have our form to use in grasshopper as a Brep. Then we can use gumball, click on that small circle in the X direction and give it the amount of extrusion we need. In order to do so we can hold Ctrl and Shift and click on the surface we want to extrude. To give this form some stability we can extrude both ends of the bench in the X-direction. Once we made those changes, we can turn the control points off and delete the bounding box. Now we have our control points and we can move them to change our form. It will help us edit our form with a bounding box.įor the “Select control object” we choose “BoundingBox”, For the “Coordinate system” we choose “World” and then for the “Cage parameters” that defines the number of points in X, Y and Z direction, we choose 5 points in the X direction and 2 points in the Y and Z direction, to have a smooth deformation on the solid.įinally for the “Region to edit” we choose Global. The next step is to use the “Cage Edit” tool. Now we can right click on “Show object control points / Points off” and turn off those control points. Here we select bottom points and use gumball to scale them. We can see that now we have points on the corners of our box, by selecting those points and moving them we can change the form of the box, for example change the height or length of it. If we want to be able to change the form of the box, we can select it and use “SolidptOn” Command. In order to do so we are going to draw a box in rhino. First step of this parametric bench tutorial is modeling the solid.
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