Linked Questions

22
votes
4answers
9k views

How to create and animate the water reflection (Caustics) on an object?

What is the best method to create this kind of reflection and how to animate it?
15
votes
3answers
4k views

reflecting direct light on glossy surface in Cycles

Working in Cycles. Say I have a "disco ball" with a glossy shader. I'm pointing a spot light to it, and I'm trying to have the reflections of that light illuminate the diffuse material on the walls ...
9
votes
3answers
5k views

Correct vector input to map texture light in Cycles

What is the correct vector input for a texture connected to a Cycles lamp so that I can make a projector-like textured light? I am trying to make an projector-like effect with a textured light in ...
8
votes
2answers
3k views

Coordinates of corners of camera view border

How to get coordinates of corners of camera border in camera view relative to the viewport area? After checking ...
3
votes
0answers
821 views

Calculating / Estimating the normal at any location on a face

In a recent answer I employed Object.ray_cast which returns the location and normal of a ray hitting a face. The normal is needed to calculate the rays reflection, ...
2
votes
1answer
712 views

How to do a ray_cast from camera origin(position) to object in scene in such a way that ray would pas through a given pixel coordinate in camera view?

As question states, I want to "extract" global coordinates of 3D point that generated information in a specific pixel in camera view(rendered image). I have a pixel coordinate in a rendered image ...
2
votes
0answers
59 views

Tracing a light ray with paths

I'm trying to simulate optical rays within blender and am not really advanced within coding for blender or using BGE, so I figured I'd come here for help. The setup I'm making involves animated ...
2
votes
0answers
172 views

shape acquisition from structured light

I am working on 3D reconstruction using structured light technique. Can the hardware(consisting of camera,a projector) be simulated in blender to generate the light pattern and project it on the ...
1
vote
0answers
468 views

RayCasting from Perspective Camera View into 3D Scene?

I am using Templates->Python->Operator Modal View3D Raycast template script which uses event.mouse_region_x, event.mouse_region_y to create raycasts into the ...
1
vote
0answers
186 views

Spot light through glass cube

I'm rather new to Blender, and try to learn it to make physics animations and visualise my data. However, I have difficulties getting the refraction working. I hope I am doing something stupid wrong, ...
0
votes
2answers
214 views

Projecting light through a lens (refraction) onto a surface

I made a lens in Freecad which I imported into Blender. Being new to Blender I managed to; a) position a red bulb behind the object b) give the object a material, set transparency, raytrace and a ...
0
votes
1answer
53 views

Apply “backface culling” if the surface is not visible from the given point

Given the point (x,y,z) and meshes scattered around this point in the space, where each triangle on the mesh has its normal known, I want to be able to detect which triangles are not visible to the ...