Anyone know of good tutorials or other info on doing blood effects? Specifically I need to do three sort: Splattered against a wall and then draining down, as from someone lined up against that wall and shot. Pooling around a body - so I need to design a good ground texture. The logical appearance of a gunshot injury to the head... I don't tend to do violent images, but in this case I'm working on a war scene... I also need to do a particle generation of an injury happening at the moment of render, but that's one for the Carrara forum...

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bkmk

bkmk?

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means bookmark. i'm interested 2. posted a msg so when thers a reply i get to know

Attached Link: http://http://www.renderosity.com/viewed.ez?galleryid=1136029&Start=1&Artist=thundering1&ByArtist=Y

http://www.renderosity.com/viewed.ez?galleryid=1136029&Start=1&Artist=thundering1&ByArtist=Yes 3D Bathroom view seen from the hallway, big blood splats and drips - not very pleasant to look at so keep that in mind should you decide to look at it. Is this kind of what you're looking for? The walls were rendered clean - all blood and grunge was added in PS. In PS I chose a splatter-like brush, hit F5, checked and tweaked the "Jitter" (as well as Roundness, Angle, Minimum) under Shape Dynamics, made it further spacing to where it ALMOST was separate splats but still a line, checked Noise - played until I liked the texture of the brush. I chose a medium Red color, left the Opacity at 100% and painted away on a new layer on top of the original image. Change the Layer Mode to Multiply and it goes DARK - which is why I chose a medium red. The reason to change the Layer to Multiply is because you'll have the colors you just painted, but the texture of the walls/surfaces underneath. The cracks in the mirror were painted on a Layer below the blood. The blood overtop the mirror was separated onto its own layer, moved just a bit to show it's not the same depth as the blood on the wall, then THAT was duplicated, reduced opacity to 50% and moved just a hint up and to the right (I think 2 nudges up and right with the arrow keys) to show it is reflected on the silver below the glass of the mirror (which is what the blood would actually be SITTING on). Now, if you know how to create your own textures in PS to apply to surfaces, you can use this technique to just make it part of the texture Color map. Then when you make a Bump map it'll fit perfectly, and when you make the Specularity map, the underlying surface can be semi-reflective while the blood itself will be VERY reflective. Hope that helps- -Lew ;-)

Your effect looks more like a 'post event smear' - like a psycho went and splashed patterns or a body was wiped across the wall. I need gunshot effects on a back wall (splatter), and pooling around a lying body as well as beneath a hung figure... I'll need to do it texture map wise due to complexity of the scene and lighting effects I intend to add. I -think- you technique might work in part for the figure against the column, who would have slumped into position after the injury. That means it will need both 'smear' and 'splatter'. This is an 'early WIP' - and as I noted, one figure did not even import successfully. What I am thinking is I will make some 'blood effect shapes' in photoshop or illustrator, and use them to make terrain maps that I will place at the proper locations in the scene. This is one of the only violent images I've done, and it's intended as a statement on racial conflict normally 'concealed' in fantasy.

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I only created that brush specifically for it to be messy - the general technique would work for any of the "wall" blood sprays and runs, as well as on objects - you can paint it dripping off of objects to the ground or on another surface. You can make a cleaner brush for generically running blood, or one that's really spread wide for a loose "splat" kinda thing for the gunshot splatter, and paint more concentrated in the middle/epicenter. Yeah, the blood pooling directly on the ground is harder to do. What program are you using - Vue? Bryce? Poser? If it's Vue, you could create an Alpha Plane with a painting of blood for the "color", and copy the image to use as the "alpha" so it remains just the painted pool. Rotate it 90 degrees to be flat to the ground, and click the "drop" icon to have it rest directly on the next lower surface (in this case the ground). I can't remember if Bryce's "drop" does it to the next surface or takes it all the way down to ground level regardless of what it passes. And I have NO idea how to do that in Poser but there must be a way. Either way, you could do the same in those and "lay" it on the ground surface. Good luck- -Lew ;-)

I have blood brushes in my free stuff, "halloween blood brushes" try that. If you need blood on the floor just add perspective with perspective transform tool under edit -- transform -- perspective. For old blood effect duplicate the layer and set the blend mode to multiply, flaten and add curves adjustment layer tweak the contrast and if Im remember good set the blend mode to color :) Hope this help :) Tihomir

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Attached Link: http://www.projectfiregun.com/assets/external/sk-ptkrr-c.jpg

I use various splatter brushes in PS as well, but am still a long way from getting it right, here's one with an attempt at pooling as well... Using a separate layer in multiply mode with dark red seems the best choice overall. Depending on the view angle, slight reflections in the pools can help too, I think.

Lunqvist - that is awesome!

Lun that image is excellent, really well done :) Tihomir

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My application is Carrara. I used a plane with an image map in it for a splatter on a wall, and I haven't yet managed to get the 'blank' parts of the image map fully transparent, but I don't expect a problem with this (I didn't know about it until I did a render just before going to bed last night). The image map was made in photoshop with some 'scatter' brushes and a wacom tablet as per thundering1's advice. After render I noticed the color was too bright, so I've adjusted it, and will render again when I get home. Attached is my project so far. In the upper right I have a small version of my corrected 'texture map' for the blood effect that I will apply tonight - unless people think it needs other improvements. :) For the blood on the ground, I just did mountain terrain maps with filters to flatten the edges and peaks - nothing photoshop there. ;) The victim being shot in the background is getting done with a particle generator, also not photoshop. The textures on these last two effects might need color adjustment. For the particle-victim, I need to find a balance in lighting and coloring to make the effect noticed for those who pay attention, but not glaring.

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On looking at Lunqvist's image, I'm thinking I may want to add more splatter to the ground effects. I could do that pre or post render, and I'll see what I come up with tonight.

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Arcady - looks really good so far. The blood splat you made is great - creepy! And good idea about the terrains just colored red - didn't even think of that one! Looking forward to seeing its progress! -Lew ;-)

Attached Link: http://www.renderosity.com/viewed.ez?galleryid=1168211&Start=1&Artist=arcady&ByArtist=Yes

Final image is now posted at the link. In the end the splatter against the wall had to be converted to a terrain map based upon the photoshop image - but that was due to a Carrara problem with transparent planes... It was refusing to make the planes transparent when I used sky lights or ambient occlusion. The photoshop work was critical in getting the shape down, but I would have preferred to be able to use the plane over a terrain map for the vertical splatter. Given the fog and spotlights, I did not feel comfortable trying to handle it post render...

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