Join Paul F. Aubin for an in-depth discussion in this video Working with the sun path, part of Revit: Rendering.
- In this movie, we're going to look at the sun path. Now, the sun path is an on-screen control that makes manipulating the position of the sun, the time of day, and the date and the year, a little bit more interactive, directly on screen. So, in the previous movie, we looked at the sun setting's dialogue, and that's an alternative way to do it, but this will be a little bit more visual and interactive. So, I'm in a site-plan view, and I've got my shadows turned on, and I do have it set to one of my still rendering presets. Now, this is important, because when you turn on the sun path, if your sun settings are set to Lighting, it's not going to show anything.
And I mentioned in the previous movie that Lighting does not actually use the sun. It's just a generic lighting. So, make sure that it's one of these, and I'm going to keep it at Still, and then it doesn't matter which preset you're using. I have the Winter Solstice. So, what I want to do is zoom out a little bit, because when I turn on the sun path, it actually is larger than the building, and so I want to make sure that we see it. So, I'm going to come over here to sun icon and click, and turn the sun path on. Now, you'll see this line appear here, kind of across.
You can see that that's the actual sun path, but we're still not really seeing anything. So, the other thing that we need to do is turn off the cropping of this view. So, I'm going to come down here and disable the cropping of the view. Then I'll type "zf," to zoom to fit, to see the sun path. Now, it's actually a bit farther away from the building than I would like it to be. You can actually resize this. So, if I select the sun path, you'll see over here that the sun path's size defaults to 150% of the size of the extents of the building.
Now, you may be looking at this and thinking it looks a little larger than that. But, when you come over here, and you highlight the terrain model, then you kind of see what it's using a calculation. So, it's actually taking that linked file into account, and it's 150% larger than that. So, on that basis, I should be able to get away with something much smaller. So, I'm going to try 100% and apply that. And you can see that that brings the sun path in much closer to the building.
The size of it is really a matter of personal preference, so you really don't have to have it that large at all. It's really up to you. In fact, I could make it significantly smaller if I wanted to. Now, notice what you get here. You get this little compass on the ground. You get these dates and times, this little yellow path with these dots on there, and then this little blue ball. That blue ball is the sun. The dates and times are actually editable, temporary dimensions. So, if I clicked on one of those, they create these little spinners here, and I could see what this looks like at 10am.
And it becomes very interactive. Or you know, earlier, at maybe 9am. Or let's go even later in the day, and see the way the shadows move. Likewise, you could click on the date and try a different date. Now, in that case, I just typed it in. Notice the yellow line move as I do that. What happens in October? So, you can see the path changing and, all the while, we're keeping the same time. Now, if you want it to be even more interactive, you can actually grab-hold of that yellow path and start to drag it.
And it will actually be changing the dates interactively as you do that, and you'll see them kind of there, on this right-hand side. You can grab-hold of the little sun ball and drag it across the sky. And you'll see the time interactively changing, and then when you let go, it will update. Now, you can even drag the sun, as this little tool-tip shows, along the analemma, and you'll see it there, moving in that sort of figure-eight configuration across the sky, throughout the year at that same point-in-time during the day.
So, there's a lot of ways you can use this thing very interactively, and of course, all the shadows and so-forth will update in real-time, as you do that. Now, you can turn the sun path on in any view. So, I thought this bird's eye view here in the site-plan would be a good way to talk about it, but if you want to go to some other view, like an Aerial View (Axon), and let me kind of spin this around, the shadows are going to cast this way, so let's spin it around here.
And then zoom out, and let's turn on the sun path. And what'll happen is, this view doesn't currently have the sun setting set to a still rendering. It's got them set to lighting. And if I were to continue with those settings, then basically the sun path is only going to show a compass. Okay, so let me show you what that looks like. Right? It just shows the compass. It doesn't really show anything useful. So, let's undo that. But if I turned on the sun path and instead say this first option, well then it will go and switch to one of the other options, and in this case, it switched to the Still rendering, In Session.
But you could choose any one of the presets and so forth, in order to manipulate it. But now, notice that if you spin this thing around that that yellow path of the sun is actually rendered three-dimensionally. So, it's a really nice interactive tool that you can use to have a really good understanding of how the sun is going to behave and move across the sky in your rendering. And so, feel free to experiment with that, and use it in conjunction with the sun settings and the location settings dialogues.
- Creating 3D views and 3D cutaway views
- Adding details to the model
- Creating and editing materials
- Working with the sun system
- Working with lighting groups
- Configuring render settings
- Preparing a cloud render
- Creating a walkthrough
- Rendering a plan