# Evaluate Surface

In this video tutorial, I will explain how you can extract a parametric point from a surface by using “Evaluate Surface”. Evaluate Surface can be used to extract a point from a NURBS surface.

In this video tutorial, I will explain how you can extract a parametric point from a surface by using “Evaluate Surface”. Evaluate Surface can be used to extract a point from a NURBS surface.

Posted in Rhino Grasshopper Tutorials.

- 2nd July 2018
### Intersect Crv/Crv

In this Grasshopper Tutorial I will use the Intersect Crv/Crv tool to produce a parametric structure. First I will linear Array a line and then intersect it with two set of parametric polylines. Then I will move the intersection to produce the parametric model.

- 27th February 2019
### Parametric Reuleaux Triangle

In this Rhino Grasshopper Tutorial, we are going to model a Parametric Reuleaux Triangle and make a pattern by dividing the edges, connecting the points based on relative paths and produce a new pattern by changing the polygon, division number & other parameters which define the geometry.

- 31st December 2018
### RMIT Design Hub

In this Rhino Grasshopper Tutorial, I will model the rotating circular panels of the RMIT Design Hub Building. First, we will take a look at the building’s facade and how its constructed. Then we will make the circles in Rhino and then export them into Grasshopper and start rotating them based on a point attractor. We will also model the rotating axis of the windows.

- 4th October 2018
### Camboo Pavilion

In this Grasshopper tutorial, I will model the Camboo Pavilion in Grasshopper and teach how you can model the pipes and the Panels. First I will explain the Enneper surface and how you can use the lunchbox plugin to make it and then I will use the Isocurve technique to extract the curves

- 13th April 2019
### Twisted Louvers

In this Grasshopper tutorial, we will model a series of twisted Louvers by using the Twist command and Iso Curve. First, we will take a base surface to model the strips (Using the Isotrim component) and then we will use the Iso Curve tool to extract the axis and twist the surface. We will also use the Graph Mapper component to change the linear distribution of the twisted louvers and finish the tutorial.

- 16th December 2017
### Evaluate Curve

In this tutorial, I will be using evaluate curve to produce a seashell geometry. Understanding the curve’s tangent and producing different controllable data with “range” is used in is this tutorial. the rotating-scale technique can be…

- 17th July 2018
### Al Bahar Towers facade

In this grasshopper tutorial, I will show you how you can use the 4point surface tool to fold a surface inspired by the al bahar facade mechanism. First, we will study the techniques we can use to model the module and then we will make it parametric with grasshopper.

- 29th April 2019
### Firefly Grasshopper (Leap)

In this Firefly Grasshopper tutorial, we will use several examples to show how you can use the Leap finger tracker component in Grasshopper. Actually, Leap Motion Inc. (leapmotion.com) is an American company that manufactures and markets a computer hardware sensor device that supports hand and finger motions as input, analogous to a mouse, but requires [...] - 25th September 2018
### Parametric Furniture

In this Parametric Furniture tutorial, I will teach you how you can model a parametric chair in Grasshopper by defining two polylines. First, we will draw the polylines and then by modeling the base surface and by using the contour tool, we will make the curves.

- 27th August 2018
### Parametric Brick Wall

In this tutorial, I will model a Parametric Brick Wall in Grasshopper and I will show you how you can use the horizontal frames to orient a brick on a freeform surface and make the Parametric Brick Wall.

- 16th September 2018
### Spiral Pattern

In this Spiral pattern grasshopper tutorial, I will show you how you can use a set of circles to produce a spiral pattern. First, we will talk about how dividing the circles will produce the base points and then by rotating the circles and connecting the points, we can produce the spirals.

- 11th March 2019
### Geometric Cake

In this tutorial, we will model the Dinara Kasko algorithmic cake in Grasshopper. First, we will start with a series of square cells and then by moving them up, scaling and rotating them, we will form the base curves. Then we will use the grasshopper attractor techniques to connect the scale factor to the attractor and finish the tutorial.

- 26th December 2017
### Voronoi

In this Tutorial, I will be show you how you can use the Voronoi command in Grasshopper and how you can use it to produce the Voronoi cells. First we will talk about the random nature of voronoi cells and then we will use populate…

- 5th September 2018
### Anemone Grasshopper

In this anemone grasshopper tutorial, I will show you how you can use anemone to produce a simple hexagonal fractal in grasshopper. First I will use anemone to deconstruct a hexagon into its segments and then we will use the “point on curve” tool to extract …

- 28th April 2018
### Bend Deform

In this Video tutorial, I will explain how you can use the Bend Deform component in grasshopper. You can easily bend geometry with this tool. First we will use a simple Arc SED tool to produce the arc and then we will bend a box with the Bend Deform tool.

- 14th November 2018
### Diamond Panels

In this Lunchbox grasshopper tutorial, I will show you how you can make complete diamond panels on a closed NURBS surface. First, we will use the lunchbox plugin to produce the panels and then we fix the triangle panels by combining them into diamonds and finally combine them back together.

- 26th February 2018
### Octree

In this Video tutorial, I will explain how you can use the Octree component in grasshopper. You can easily make a parametric octree with random points and then use the random reduce component to delete the boxes which are created by octree.

- 15th May 2018
### Voronoi3d

In this video tutorial, I will show you how you can use the Voronoi3d tool and how you can use it to produce Voronoi cells on a 3d NURBS model. You can easily produce 3d voronoi cells in grasshopper with the Voronoi3d tool and random distributed points.

- 18th October 2018
### Bow Building

In this Rhino Grasshopper Tutorial, I will model the Bow Building in Calgary. First I’m going to use the plan picture to draw the curves in Rhino and then I’m going to extrude the facade surfaces and panel them using Lunchbox and Weaverbird

- 18th February 2018
### Sweep1

In this video tutorial, I will talk about how you can use sweep1 to produce a parametric surface. first we will define a curve for the rail parameter and then we will orient a section in to the curve and finally sweep the section with the rail to produce the result.

- 5th November 2018
### Lincoln Zoo Pavilion

In this Grasshopper tutorial we will model the Lincoln Zoo Pavilion. First I will explain how you can model the curves , mirror it and finally model it as a solid. By technique you can produce a sine curve on a freeform surface.

- 22nd April 2019
### Felix Candela Shell

In this Grasshopper tutorial, we are going to model the AD Classics by Felix Candela (Or the Los Manantiales Restaurant). First, we are going to start with a circle and then we will divide it into Perpendicular frames. We will use these planes and the Bezier Span component to model the shell. You can also [...] - 28th July 2018
### Weaverbird Grasshopper

In this video tutorial, I will use three different plugins (Weaverbird, Cocoon, and Kangaroo) which will take your modeling to a whole new level! First, we will model our solid mesh with Cocoon and then we will refine the mesh with Kangaroo and at the end, we use weaverbird to give our mesh some power.

- 4th March 2019
### Schüco Parametric System

In this Parametric Architecture video we will take a look at the Schüco Parametric System and how it works. Then we will model the panels in Grasshopper by producing a base surface and then dividing the surface in to panels. We will also use a range of numbers combine by Graph mapper to produce a sine wave.