Atomic bomb with Blender!

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Dwight Tyler
5 years ago
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1 New version! Atomic bomb with Blender! Previous version: Fweibel.com 1/ Fweibel

Introduction This article was created for people who are interested in creating virtual special effects with blender. This is the 2 nd tutorial I wrote about this subject.

2 Introduction This article was created for people who are interested in creating virtual special effects with blender. This is the 2 nd tutorial I wrote about this subject. This one has been simplified. Anyway, it requires some basis with blender Global method This technique I developed to simulate a massive explosion mainly uses the displace modifier: Raw meshes objects (without displacement) Fireball ColumnTop Column Shockwave Meshes objects (with displacement and subsurf level 4) Fweibel.com 2/ Fweibel

use 3 empty s which will be uses for displaced texture s coords.

3 Massive explosion smoke dynamics This picture shows the global dynamic of gazes produced by nuclear fission: Warm burning gases rises and cool down with the altitude, which creates this rolling effect on the fireball To simulate this, we ll use 3 empty s which will be uses for displaced texture s coords. «Empty s» for texture s animations «Up» «Fix» «Down» Adjust their size to obtain the best looking result when the modifiers have been added (see below) Fweibel.com 3/ Fweibel

4 IPOs: «Up» «Down» Textures used for displacement Displ 1 Large noise, this texture will be used to change the global aspect of each mesh objects. Displ 2 Displ 3 Small noise, for more details Fweibel.com 4/ Fweibel

5 Meshes: Shockwave Animation IPO keys (scale): Frame 100 : X,Y,Z = 0.0 Frame 500 : X, Y = 2.0 ; Z = 1.5 The shape of the curves are important, it will give the damping effect : Quick growth at the begining, then slowing down Note : Shockwave grew less in height than in width Modifiers Subsurf : Here you can change the level of details. High values will increase the render time 1 st deformation level: Make the global shape of the object changes 2 nd deformation level: More detailed. I used vertex groups to randomize the displacement level over the object s surface. 3 rd deformation level: Also use of vertex groups Fweibel.com 5/ Fweibel

6 Mesh : Column Animation Simplified tutorial: Massive explosion - Blender IPO keys (scale) : Frame 100 : X,Y,Z = 0.0 Frame 500 : X,Y,Z = 1.2 Curve of Z axis is different. You ll need to adjust it depending of the rising speed of the fireball object Modifiers This will give the sensation that hot gases are rising up Fweibel.com 6/ Fweibel

7 Mesh : ColumnTop Animation Simplified tutorial: Massive explosion - Blender IPO keys (scale) : Frame 100 : X,Y,Z = 0.0 Frame 500 : X,Y,Z = 1.5 IPO keys (loc) : Frame 100 : Z = 0.0 Frame 500 : Z= 10.0 Z loc, to make the object rising Modifiers Fweibel.com 7/ Fweibel

8 Mesh : Fireball Animation Simplified tutorial: Massive explosion - Blender IPO keys (scale) : Same than the previous object IPO keys (loc) : Same than the previous object Same IPO block than the ColumnTop object Modifiers Important : For the «rolling» gases effect Fweibel.com 8/ Fweibel

Materials : Here we are going to see how to create the burning in the

For this we ll use 4 times ONE texture which will react to the

Creating the 4 lamps Add 4 lamps (renamed to FireBallL 1,2,3,4 ) and

9 Materials : Here we are going to see how to create the burning in the core of the fireball. For this we ll use 4 times ONE texture which will react to the lighting of 4 lamps. Each texture will be linked to one lamp. Creating the 4 lamps Add 4 lamps (renamed to FireBallL 1,2,3,4 ) and linked them to the object fireball (parent) Place the lamps randomly in the fireball. Lamp settings: Fweibel.com 9/ Fweibel

Add an IPO curve for th lamp s power (combustion

column, columntop and fireball (actually, every objects )

different channels) Every texture will have a linked lamp

FireBallL2, Tex in channel 1: FireBallL3, Tex in channel

10 Add an IPO curve for th lamp s power (combustion attenuates) Material It will be used for shockwave, column, columntop and fireball (actually, every objects ) Texture Assign 4 times this texture to the material (in 4 different channels) Every texture will have a linked lamp : Tex in channel 1: FIreBallL1, Tex in channel 1: FireBallL2, Tex in channel 1: FireBallL3, Tex in channel 1: FireBallL4 Activate «Emit» and «TransLu». Fweibel.com 10/ Fweibel

Halos First, put the 3d cursor on the fireball.

fireball, this is why the spots must be parented to the

11 Halos First, put the 3d cursor on the fireball. Then add 4 spots. For each one, add a constraint track to, to direct them to the active camera: The glare comes mainly from the fireball, this is why the spots must be parented to the object fireball. Spots settings Add an IPO curve the control the spot size (for the attenuation) Fweibel.com 11/ Fweibel

12 Conclusion Thanks for following this tutorial! I hope it was useful. Visit my web site My youtube channel: Fweibel.com 12/ Fweibel

Chapter 13 - Modifiers

Chapter 13 - Modifiers The modifier list continues to grow with each new release of Blender. We have already discussed the Subdivision Surface (SubSurf) and Ocean modifiers in previous chapters and will