Chaos Corona for Cinema 4D > [C4D] I need help!
Sun complete revolution impossible ?? :O
Cinemike:
I might not quite understand what your problem is (but I think you are making things more complicated for yourself than they actually are), but you DO know that your sun rotation can be bigger than 360°, so you can start anywhere and end whereever you want, without being "blocked" at some point?
In other words: Add 360 or 720 degrees to whatever you need and go from there. More than enough space.
aler:
I tried. It's a go, ...and I didn't suffer at all :)
I took the geographical coordinates of the northern (N.Latitude - 64°), 10 may.
In order for the sun to make a full circle (but not ping-pong), the last keyframe was set at 23:59 (instead of 00:00).
If you need a specific shape/slope of the shadows, then you can adjust the coordinates of the Sun/season.
BigAl3D:
I guess another way would be to use a C4D Infinite light source. It gives you a nice orange line to easily see exactly where your light is aiming at. Might be worth a try. I'd be interested to hear any drawbacks to using a light instead of the sun, as long as you match the color and intensity of course.
In my very quick, 15-pass example, I did not match the angle exactly, but I think it would work. You would have no limits in this technique either. Whatever works for you.
Tazok:
--- Quote from: Cinemike on 2023-05-10, 15:03:25 ---I might not quite understand what your problem is (but I think you are making things more complicated for yourself than they actually are), but you DO know that your sun rotation can be bigger than 360°, so you can start anywhere and end whereever you want, without being "blocked" at some point?
In other words: Add 360 or 720 degrees to whatever you need and go from there. More than enough space.
--- End quote ---
I think i don't understand what your saying neither :D i want more "angle", not rotation, and i can't add nothing to the angle, it's stupidly blocked between -90° and 90°. You can't reach 180, 360 or whatever.
--- Quote from: aler on 2023-05-10, 15:12:06 ---I tried. It's a go, ...and I didn't suffer at all :)
I took the geographical coordinates of the northern (N.Latitude - 64°), 10 may.
In order for the sun to make a full circle (but not ping-pong), the last keyframe was set at 23:59 (instead of 00:00).
If you need a specific shape/slope of the shadows, then you can adjust the coordinates of the Sun/season.
--- End quote ---
Yes you didn't suffer at all because it's not what i want to do. I need my sun really much higher, and yes it's not "realistic" but i need this for the very precise movement shadow the client asking me. And i can't do it easily because the angle movement is bloqued between -90° and 90°.
I need to do what there is on my first screenshot. Total revolution with very high sun. And it is not easily possible, without adding keys on the rotation too and tricks and whatever.
If the angle was not blocked, i put only 2 keys on it, -90° for the first key and 270° for the second key and voila, job done. But no... because angle is blocked for no reason.
--- Quote from: BigAl3D on 2023-05-10, 17:15:43 ---I guess another way would be to use a C4D Infinite light source. It gives you a nice orange line to easily see exactly where your light is aiming at. Might be worth a try. I'd be interested to hear any drawbacks to using a light instead of the sun, as long as you match the color and intensity of course.
In my very quick, 15-pass example, I did not match the angle exactly, but I think it would work. You would have no limits in this technique either. Whatever works for you.
--- End quote ---
Yes, there is this solution too, but much complicated, keys for the color, the intensity, the movement and whatever because you can forgot the link with the corona sky........
....Whereas if corona sun angle was not blocked between -90° and 90° (so only a 180° angle movement possible), it could be done in 5 seconds !
In short, there are solutions, they complicate everything for nothing when it would be enough to unblock this damn angle ^^'
I have trick with a 180° rotation when i reach the maximum angle and go back after. It's not perfect but it will be fine.
aler:
--- Quote from: Tazok on 2023-05-11, 11:23:26 ---And i can't do it easily because the angle movement is bloqued between -90° and 90°.
--- End quote ---
Well, that's right it's blocked, :) because Corona is a physics rendering engine and everything is like in life.
But I used TomG way:
--- Quote from: TomG on 2023-05-09, 19:39:09 ---Sun tag would be easiest way - other thing is to flip the Rotation from 0 to 180 in one keyframe when sun hits angle of 90, then repeat going from 90 to 0 in angle as now that goes in the opposite direction :)
--- End quote ---
and again everything worked out for me, and at the same time, again, I didn’t even sweat :)
(I have the Corona Sun moving through the zenith)
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