First I've created a plane with 1x1cm, applied an edit poly modifier to extrude and bevel, creating this way a single mirror.
step 2 of 18
Created a sphere with 15.9 cm radius - [(1cm x 100 /pi) / 2 ]- this way i would have 100 single mirrors on the diameter of the sphere.
Segments - 100
Converted to editable Poly, so I could use the fill mode in the graphite modeling tools.
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Filling the sphere with mirrors:
To start filling the ball with mirrors, select an horizontal edge loop of the sphere (editable poly), in the graphite modeling tools go to the object paint Tab, select single mirror as the object to be painted on the scene, and click Fill.
Use the fill# or spacing to adjust the amount of mirrors. I've also used a little randomness in position U and W (scatter parameters).
As you move up \ down in the sphere, it's better to adjust the scaling also!
with all mirrors in place, i have attached them in to one single edit poly.
step 4 of 18
Modeling the lamp:
For the lamp i used simple geometry, the base is a cone +edit poly mod.(extrude the base just a little to give thickness), the body is made with cylinders, spheres and a box with edit poly mod. to give a little more thickness in the center. the top is a cylinder with a taper modifier and a edit poly mod. to bevel the hole for the light bulb.
The light bulb it's a geosphere with taper mod.
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the Room it's a box with a shell mod. and an edit poly modifier to edit the polygon ID's. created a spline with sweep modifier for the skirting.
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After posing the objects in the room, I've modeled the cloth by creating a plane above the disco ball with 75 x 60 cm and 60 x 60 segments, applied a cloth modifier and added the disco ball and the room as collision objects.
made a local simulation, and when the cloth was the way i wanted IÂ´ve applied an edit poly modifier to adjust by moving, relaxing, pulling and conform with the freeform graphite modeling tools.
A shell modifier to give some thickness and a turbosmooth in the top.
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Base is a multi / sub-object with 2 id's (wall + floor)
floor- arch & design shader, for the diffuse map and bump i used a substance map and choose the texture checker.
reflection gloss= 0.75
-Material advanced rendering options-
reflections max distance 120 cm, fade to black.
step 8 of 18
arch & design with substance map applied to diffuse and bump channels. (stucco)
reflection gloss 0.3
highlights and FG only
step 9 of 18
Mirror ball material:
each single mirror has 3 id's:
1 id for the sides (for a black non reflective material), another for the main mirror material witch is an arch and design shader with reflection 1.0, glossines 1.0, Brdf 0 deg. reflection at 0.95, and a third id just to change the brdf to 0.70 on the sides of the main mirror.
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Desk Lamp material it's an arch & design shader, solid red color in the diffuse channel, reflection 0.6, reflection gloss 0.9, highlights and FG only, Metal material.
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Light bulb material:
arch & design with self illumination on.
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Arch & design shader, diffuse solid dark red, roughness 0.2, reflection 0.1, reflection gloss 0.25, highlights and FG only, IOR 1.9, brdf by IOR.
step 13 of 18
the scene as one light only, for the lamp.
raytraced shadows on
light shape point.
in the properties of the light bulb, exclude "cast shadows"
step 14 of 18
used photons and final gather.
1st, calculated the GI and caustics photon map and saved it to disk, then i did the same for the FG.
i did some adjustments on the mental ray exposure control: menu bar/ rendering menu/ environment.
by decreasing the whitening point i got a colder image, and also increase contrast by reducing mid tones.
step 15 of 18
for the final render (1600x1200)
increased the precision multipliers to 2x
samples per pixel at min.4 max 64
Filter type: Lanczos
with spatial contrast at 0.3
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I rendered some elements and save them as Hdr to edit in photoshop.
step 17 of 18
In photoshop I used the render elements to have a nice control over the final image. working in 32 bit HDR image, i only used the exposure to control the brightness of each element.
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To finalize i convert the image to 8bit (using exposure option when merging)
and add lens flare effect.