Shane, it’s not your fault that you’re confused. Lambert is an illumination model (with a physical basis) for the light reflected off a surface, expressed in terms of the incoming illumination’s direction with respect to the surface normal at the point of incidence. Phong is a more nuanced shading model (albeit a more hacky one) … Read more
You are using a function called Calculate3DPosition which calculates X, Y, Z positions from the angle and then those are used in a matrix.translate call. What you need is actually much simpler – you just need to call matrix.rotate with the angle. It might look surprisingly easy when you’ve finished, but honestly, the only complexity … Read more
Consider using of Woo and Amanatides grid traversal algorithm: article “Fast Voxel Traversal Algorithm…” Practical implementation is in grid traversal section here 2d-case illustration:
Update Nov 2018: Testing the snipet from the question in latest chrome and Firefox works. Although support for 3d transforms on svg elements isn’t very wide, browsers are implementing it more and more. Origin answer : 3D transforms aren’t supported on SVG elements. There are a few workarounds though : If the svg doesn’t contain … Read more
You can use matplotlib for this. matplotlib has a mplot3d module that will do exactly what you want. import matplotlib.pyplot as plt import random fig = plt.figure(figsize=(12, 12)) ax = fig.add_subplot(projection=’3d’) sequence_containing_x_vals = list(range(0, 100)) sequence_containing_y_vals = list(range(0, 100)) sequence_containing_z_vals = list(range(0, 100)) random.shuffle(sequence_containing_x_vals) random.shuffle(sequence_containing_y_vals) random.shuffle(sequence_containing_z_vals) ax.scatter(sequence_containing_x_vals, sequence_containing_y_vals, sequence_containing_z_vals) plt.show() The code above generates a … Read more
This shows the two-way interaction between Javascript and c#. Javascript calls a c# method C# gets the result of an expression in Javascript – Type scriptType = Type.GetTypeFromCLSID(Guid.Parse(“0E59F1D5-1FBE-11D0-8FF2-00A0D10038BC”)); dynamic obj = Activator.CreateInstance(scriptType, false); obj.Language = “javascript”; obj.AddObject(“MyClass”,new JSAccessibleClass()); obj.Eval(“MyClass.MsgBox(‘Hello World’)”); //<–1 var result = obj.Eval(“3+5”); //<–2 [ComVisible(true)] public class JSAccessibleClass { public void MsgBox(string s) … Read more
This is nowhere near my cup of tea so handle with extreme prejudice and also far form solution just some start point hints… First of all we need to define some constraints/assumptions in order to make this to work. user selects 4 lines representing 2 perpendicular planes and these 2 QUADs have the same height … Read more
Simple cylinder wrap with Canvas 2D Very simple example using sin and cos to create the curved map. The images is cut into strips approx 1 pixel wide then rendered as half a squashed circle. As perspective is a linear effect related to distance I also add a small amount of perspective by scaling up … Read more
Paraphrased from the wikipedia article on Mercator projection: Given a “mapping sphere” of radius R, the Mercator projection (x,y) of a given latitude and longitude is: x = R * longitude y = R * log( tan( (latitude + pi/2)/2 ) ) and the inverse mapping of a given map location (x,y) is: longitude = … Read more