Fusion Basics Tutorial 16 - 3D Lights

hi guys today we're going to be talking about lights in the 3D space infusion within DaVinci Resolve let's get to it [Music] let's put in a fusion comp that's on the effects on the toolbox effects Fusion comp let's go to the fusion page so they are basically four lights in a 3D space infusion the best place to see them all stacked together is under effects on the tools you'll see lights all four lights are here so let's pull them all in ambient light directional lights Point light and spotlight all four of them have an orange input that orange input you can connect it 3D mesh to it you can also correct another connect another light to it as long as the 3D node you can connect it to this now to each of the lights let's start with ambient light um let's put in a 3D mesh as a shape 3D let's connect let's bring in a merge node to use lights the standard way to use light is to connect it to a merge node and connect the 3D mesh to that merge node let's drag that to the right viewer let's make this a single VR so we see what we're working with for shape 3D let's make it a cube okay so let's bring in a renderer node and connect this to the renderer node the render node let's enable lighting and let's drag this to the viewer so we see this thing here let's rotate the object by going to transform Tab and rotating it a bit so we get to see it and maybe pull this down like that you'll see that ambient light doesn't give the 3D Shape definition it just essentially brightens the whole the whole scene evenly if I increase it you see it just increases it reduces it that's all it does it doesn't give it definition and then you can change the color of the of the ambient light you can change it to something like the blue so it costs the purple shield on the object right on the 3D scene you can have multiple objects in here either so you give them the same color tint right you can increase the intensity of it you can reduce the intensity then in transform with ambient light if you move X or Y or Z it doesn't have any effect so transform does not have any effect on ambient light it is just so you don't moving it around doesn't change anything that's that for ambient light and now for ambient light also it does not cast a shadow let's move it back disconnect it move on to directional light let's connect that to the scene bam this gives the shape definition as you can see but it does not cast its shadow ignore that there is a shadow setting here it does not cast a shadow then also you can give it a color tint but there's still some level of definition but for directional light what happens if you move the translation up and down nothing happens because for directional light it's almost like the Sun so it's rotation that has an effect on it if I move it about you see it has an effect on the scene you can rotate it X Y or Z then it has an effect on the scene but translation effects XYZ does not have an effect on it that's that's for directional light or you can drag the 3D merge 3D here let's zoom out a bit to 25 you can move it around okay so there it is so you see here so that angle we put it at but you see this thing here shows where it is pointing to if you want it to point to this you just rotate it like that so it should be the sun shining on the object okay so that's how directional light works let's disconnect that let's even make it a dual viewer let's close effects tab so we can bring renderer on the right viewer and bring merge 3D to the left viewer let's connect Point light too much 3D and you'll see that nothing really seems to have happened right you can as always for all of them you can change the color IT projects and the image but it doesn't seem to have any effect it's because it's within the object this is much 3D one here it's within the object so you need to pull it out so we can go to transform and we pull it out and then you see it shining across okay so that's how Point light works notice that there's no rotation for it because rotating it doesn't change anything because it shines the light evenly around about it that's how that works you can change the the shine type to linear quadratic quadratic is more along the lines of how light shines realistically but linear is it looks nicer on the screen because it reduces the light intensity in direct proportional to the distance from the object all right you can reduce the decorate increase it to cure it and all ignore the shadow thing it does not cast a shadow all right doesn't cast a shadow how do I verify this I can bring in an image plane connect an image plane to this and let's increase the size of this image plane like like so let's um make the image plain interior it's white that's fine this point like you can move it back a bit more so that we can see the light on the image plane as it is it's supposed to cast a bit of Shadow let's go to render 3D and enable Shadow supposed to cast some Shadow on this image plane but it is not doing that very good to do quite light I can move it around it never casts a shadow all right so ignore that it has Shadow listed here if it does not cast a shadow let's disconnect that and then finally we go to Spotlight if you want to cast a shadow on an object you use spotlights let's move up to 25 so we see where it is at you see it doesn't seem to have any effect on the scene is because it's in the center of the scene starting to move it out so I go to spotlight on the spotlight there are some settings the color settings the Decay type the cone angle the cone angle is usually 40 by default I usually increase mine to 90 to increase the coverage the penumbra angle let me show you how that works let's go to transform let's move it back by increasing the Z value so you see that so you see the edges of the light if I go to controls and I increase per number angle it softens that edge of the lens that's what that does right then this drop-off can now contracts the softened edges that's how that works then you'll see on that here Shadows let me move it around so you can see it cast a bit of Shadow let's move it to the side let's move it down actually it's a little bit down a bit then I want to rotate it up I can click on this red of it hit it up you can already see that it is casting a shadow of this box on the image plane okay now like I said in the renderer 3D last week the rendering of shadow on the software renderer is better and more consistent on software renderer than it is on open gear renderer so if we go to the spotlight we can now go to shadows and you can set the color of the Shadow you can set the density if I increase density to 1 it becomes this then if I reduce that almost like it dictates the opacity of the Shadow so um then I go to multiplicative buyers and additive buyers is where you have multiple objects casting Shadow on each other I really don't touch the shadow map side Shadow map proxy multiplicative bias additive bias I don't touch this I just ignore them then I move to the sampling quality I leave it at medium but what I also do is I make sure the softness I make it variable fast so you see it cross the shadow if you want to be a little better you can save variable and then it's it's just like a regular shadow right then if you put constant constant just leaves the Shadow the same intensity from closer to the object down to the end of the object but I usually leave it a variable fast so it's a bit sharper here then it gradually fits off to the getting blurrier as it moves away from the object so that's how Shadows work here and um if I decide to now move the slides you can see the shadow moving like that you can move the X see the shadow moving like that all right so that's that's how that works here there you can move it around you can change the rotation translation works for spotlight rotation Works Spotlight and then the pivot also works now let me just do a little thing here so to drive this home this Cube let me disconnect this Cube let's bring in a text 3D connect this text 3D here this series result let's increase the size then let's go to Extrusion and give it like an expression of 0.2 it looks like the sizes at least it's too big I would use the size a whole lot like that something like this because this is if you throw that great so you can see how if I now decide to move the spotlight let's assume I pick this Spotlight and I move it here and this Spotlight let's assume I say use I want to pick a Target I want to use you can click and drag and I want to use this as Target then I can go to Spotlight and I can now move this Street always focuses on the text I go to here and I drag it here okay and I keyframe it here and keyframe it here and I go to perhaps let's say 30. is here like that something like that secretly this you see the shadow moving across like that something like that this is the kind of quick and dirty right but you get the drift if you move the light further backwards we can make this shadow look a little nicer so that's basically it for the lights in 3D infusion and I hope you learned one or two things these are just quick and dirty straightforward basic things that you need to be able to get up and running in 3D space indication and next week we are going to be doing like a model as a book a book opening all done completely in Fusion all right so looking forward to sharing that with you thanks for joining me on this one and um have a nice one cheers

Channel: Mad Resolve

Views: 1,793

Keywords: Tutorial, Fusion, Davinci Resolve, Basics, Beginner, Noob, 3d, Visual Effect, stunning, 3d lights, lights

Id: R9NQ0pioZuk

Length: 12min 0sec (720 seconds)

Published: Tue May 30 2023