Jump to content


Bronze Supporter
  • Content Count

  • Joined

  • Last visited

  • Days Won


jed last won the day on December 4

jed had the most liked content!

Community Reputation

387 Excellent


About jed

  • Rank
  • Birthday 12/22/1949

Profile Information

  • First Name
  • Last Name
  • C4D Ver
    R20.026 Studio
  • Location
    Manchester, UK
  • Interests
    building + repairing computers, C4D

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. @madmarvin you could use the same math to make a calculator in XPresso to get the 100% align frame value for a regular align to spline on a uniform spline, then enter this manually. The object would travel at the designated kph, and would scrub. kphcalculate.c4d the thing with the addition method for speed, is that it can be adjusted on the fly - for normal objects as well as align to spline. A helicopter blade, with the rotation done using addition, can be spun up and down - from stopped to max to stop again. When you get the helicopter blade speed by multiplying time (seconds or frame), it goes backwards when you try to slow it down.
  2. Position velocity is interesting because, if you hover your mouse over it, it shows as a vector. However, if that port is connected to a real input, XP does the 3D Pythagoras conversion for you ie speed = sqrt(x^2 + y^2 + z^2)
  3. I think this does it. There's a slider in kph, and it agrees with the XPresso position velocity kilometers.c4d you'll have to double check my math - I'm used to cm/frame not kph
  4. I use modulo a lot, eg if I want to trigger some event every 10F I use if frame modulo 10 = 0 <do something> pseudocode
  5. I don't understand your maths, but this is how I'd do 2 oscillating lights 2lights.c4d edit - probably should have been >= not >, but you get the idea
  6. Follow position and follow rotation under the dynamic force tab let you go from dynamic to 'normal'.
  7. I was asked by a member for XPresso ideas to drive a clock sweep second hand, so I've zipped up a few scenes that might interest anyone learning XPresso. I used modulo to get the second pulse, a monoflop as a counter and delay effector for a small overshoot and wobble on the hand. In one file there's a ticking sound, but you can't really export sound easily in C4D, so my method is to record the sound in real time in Cinema using Audacity set to 'what you hear', and add it in After Effects. In the past when I've used the Audacity method on big scenes, the sound track can end up longer than the animation, but AE has tools for shrinking tracks. In this clip I exaggerated the hand overshoot to show the effect (has sound) - it's not rocket science, but might help XPresso beginners second_hand2.zip
  8. If you just want to enable the splines in sequence, you could use iteration. You can animate the slider in this file splines.c4d although I'm guessing you want to animate smoothly. If you have access to R20 C4D, there's the new volumes thing, where you may be able to subtract say a cube from your model and animate the position. I'm not up to speed with volumes but if it's possible, someone here could probably advise.
  9. jed

    Modelling a Rounded Form

    This video has some info on front and back decals.
  10. jed

    Particle Object Collisions?

    @madmarvin - regular collision needs objects to be polygons, but dynamic collision node also works with primitives. Depending on scene, dynamic collision often only needs one object input eg 'has object A collided with anything'.
  11. The file on that page gave an error messaged 'too old for R20', so I opened it in R19 and resaved. It seems to work the same in R20 as R19. r20-DelayCamera.c4d
  12. Maybe like this CAMERA_DOLLY_RIG3.c4d you can adjust the noise params (freq etc) in attrib manager
  13. If you just want some sliders that can be keyframed - CAMERA_DOLLY_RIG2.c4d you might have to go control, user data, manage user data to change values. The degree sliders actually output radians in the XP window, but the rotation inputs are in rads.
  14. Increasing steps per frame (in doc settings) often fixes dynamic stuff intercepting.
  15. jed

    Particle Object Collisions?

    The emitter seems to get detected with dynamic collision node. xpresso_button_flip2.c4d