Simple 3D Enviroment with Materials

Two simple 3D scenes, one with lighting, one without.

3D Scene with Sphere

Check out the scene below. The Sphere (one of Nuke's 3D primitives) is being textured by a Grid. The Shuffle node is only there to add a solid white to the alpha. If it was not there the Sphere becomes semi-transparent. However, the result is 'flat' with no sense of volume to the Sphere.

In the example scene below, the following key nodes have been used:

• Sphere: One of Nuke's basic geometric primitives. See the page Sphere
• ScanlineRender: This converts 3D info to 2d. See the page ScanlineRender
• Camera: This provides the viewpoint to the 3D environment. See the page Camera.
• Grid: This generates a grid pattern in 2D. Piped into the Sphere, it provides texture information.

There is no light in the scene, so the color comes entirely from the grid.

A simple 3D scene, with no lighting effect.

Press 'Expand' and select and copy everything below this line, then paste into the Nuke node graph.

set cut_paste_input [stack 0]
version 6.3 v2
Camera2 {
 inputs 0
 translate {0 0 7.53000021}
 name Camera1
 selected true
 xpos -313
 ypos -388
}
push $cut_paste_input
Grid {
 output rgb
 number 30
 size 16.5
 name Grid1
 selected true
 xpos -166
 ypos -672
}
Shuffle {
 alpha white
 name Shuffle1
 selected true
 xpos -166
 ypos -648
}
Sphere {
 name Sphere1
 selected true
 xpos -166
 ypos -573
}
Scene {
 name Scene1
 selected true
 xpos -156
 ypos -513
}
push 0
ScanlineRender {
 inputs 3
 output_motion_vectors_type accurate
 name ScanlineRender1
 selected true
 xpos -166
 ypos -367
}

3D Scene with sphere, material and light

In the example below, in addition to the nodes used in the previous scene, the following key nodes have been added:

• ApplyMaterial: See the page ApplyMaterial.
• BasicMaterial: See the page BasicMaterial
• Lights: See the page on the Point, Direct, Spot and Environment lights.

Instead of being piped directly into the sphere, the textures have been applied via an ApplyMaterial (which prepares the Sphere for a material) and a BasicMaterial (which specifies the specific properties of the material).

A light has also been added. In order for it to have an effect upon the texture, it must share space with the Sphere. This is done using a Scene node.

The diffuse and specular properties of a sphere applied through a BasicMaterial and an ApplyMaterial node.

Press 'Expand' and select and copy everything below this line, then paste into the Nuke node graph.

set cut_paste_input [stack 0]
version 9.0 v7
BackdropNode {
 inputs 0
 name "BLUE BOUNCED LIGHT"
 tile_color 0x87854701
 gl_color 0x87854701
 label "BLUE BOUNCED LIGHT"
 note_font "Arial Black"
 note_font_size 20
 selected true
 xpos -996
 ypos -1004
 bdwidth 244
 bdheight 166
}
BackdropNode {
 inputs 0
 name "DIFFUSE MAP"
 tile_color 0x87854701
 gl_color 0x87854701
 label "DIFFUSE MAP"
 note_font "Arial Black"
 note_font_size 20
 selected true
 xpos -869
 ypos -1365
 bdwidth 200
 bdheight 170
}
BackdropNode {
 inputs 0
 name MAIN_LIGHT
 tile_color 0x87854701
 gl_color 0x87854701
 label "MAIN LIGHT"
 note_font "Arial Black"
 note_font_size 20
 selected true
 xpos -558
 ypos -1015
 bdwidth 206
 bdheight 185
}
BackdropNode {
 inputs 0
 name "SPECULAR MAP"
 tile_color 0x87854701
 gl_color 0x87854701
 label "SPECULAR MAP"
 note_font "Arial Black"
 note_font_size 20
 selected true
 xpos -1139
 ypos -1236
 bdwidth 200
 bdheight 150
}
Camera2 {
 inputs 0
 translate {0 0 15}
 pivot {0 0 -15}
 name Camera7
 selected true
 xpos -765
 ypos -808
}
Light2 {
 inputs 0
 color {0.178416 0.334345 0.747239}
 color_panelDropped true
 intensity 2.1
 translate {-1.440000057 -1.230000019 -0.27999997}
 depthmap_slope_bias 0.01
 name Light1
 selected true
 xpos -976
 ypos -924
}
Light2 {
 inputs 0
 intensity 2.1
 translate {2.430000067 1.409999967 3}
 depthmap_slope_bias 0.01
 name Light5
 selected true
 xpos -540
 ypos -924
}
Grid {
 inputs 0
 size 33
 name Grid3
 selected true
 xpos -1088
 ypos -1166
}
Grade {
 channels rgba
 black 0.17
 name Grade2
 selected true
 xpos -1088
 ypos -1139
}
push 0
Grid {
 inputs 0
 size 45
 color {0.455 0.138432 0 0.455}
 color_panelDropped true
 name Grid5
 selected true
 xpos -849
 ypos -1285
}
push 0
BasicMaterial {
 inputs 4
 diffuse 0.36
 specular 0.48
 min_shininess 19
 max_shininess 3.05
 name BasicMaterial2
 selected true
 xpos -849
 ypos -1139
}
push $cut_paste_input
Sphere {
 selectable false
 name Sphere4
 selected true
 xpos -655
 ypos -1163
}
ApplyMaterial {
 inputs 2
 name ApplyMaterial2
 selected true
 xpos -655
 ypos -1139
}
Scene {
 inputs 3
 name Scene5
 selected true
 xpos -645
 ypos -924
}
push 0
ScanlineRender {
 inputs 3
 conservative_shader_sampling false
 motion_vectors_type distance
 name ScanlineRender7
 selected true
 xpos -655
 ypos -787
}
Write {
 name Write6
 selected true
 xpos -655
 ypos -722
}