Rotate Sun smoothly to a target angle?

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Rotate Sun smoothly to a target angle? #398051 03/26/12 22:01 03/26/12 22:01
Joined: Mar 2008 Posts: 2,247 Baden Württemberg, Germany Espér OP Expert
Espér OP Expert Joined: Mar 2008 Posts: 2,247 Baden Württemberg, Germany	hi there.. i managed to rotate the sun of a level by hitting left/right key with this code: Code: sun_angle.pan += (key_cul-key_cur)*time_frame; sun_angle.pan %= 360; sun_angle.tilt = fsin(sun_angle.pan, 45) + 45; sun_light = sun_angle.tilt; That works very well.. but was still a dummycode.. Now i created buttons to manage 4 different daytimes (morning, noon, afternoon, night) I tried several ways now.. A while loop wich stops if the sun_angle.pan reaches the given position The smooth arithmetic .. But it won´t work. The sun keeps rotating, or stops at a number i don´t want My question now: how to rotate the sun_angle.pan to a given angle? The rotating speed needs to get faster at the start, and slower to the end (smooth rotating)... Any idea? ._. Last edited by Espér; 03/26/12 22:01. Selling my Acknex Engine Editions (A7 Com & A8 Pro): >> click here if you are interested <<

Re: Rotate Sun smoothly to a target angle? [Re: Espér] #398269 03/30/12 14:27 03/30/12 14:27
Joined: Mar 2008 Posts: 2,247 Baden Württemberg, Germany Espér OP Expert
Espér OP Expert Joined: Mar 2008 Posts: 2,247 Baden Württemberg, Germany	I've still not found a solution ._. help, plz :'( Selling my Acknex Engine Editions (A7 Com & A8 Pro): >> click here if you are interested <<

Re: Rotate Sun smoothly to a target angle? [Re: Espér] #398273 03/30/12 15:00 03/30/12 15:00
Joined: Apr 2005 Posts: 4,506 Germany F fogman Expert
fogman Expert F Joined: Apr 2005 Posts: 4,506 Germany	I can´t write you any code because I´m very busy atm. But you can try vec_lerp and use the sin function to set the factor "f". This should give you a smooth rotation. no science involved

Re: Rotate Sun smoothly to a target angle? [Re: fogman] #398275 03/30/12 15:14 03/30/12 15:14
Joined: Oct 2011 Posts: 1,082 Germany C Ch40zzC0d3r Serious User
Ch40zzC0d3r Serious User C Joined: Oct 2011 Posts: 1,082 Germany	Code: while(sun_angle.pan < 50) { sun_angle.pan += 3*time_step; wait(1); } Why this shouldnt work? OR you dont want static offsets?

Re: Rotate Sun smoothly to a target angle? [Re: Ch40zzC0d3r] #398279 03/30/12 16:18 03/30/12 16:18
Joined: Apr 2005 Posts: 4,506 Germany F fogman Expert
fogman Expert F Joined: Apr 2005 Posts: 4,506 Germany	Quote: The rotating speed needs to get faster at the start, and slower to the end (smooth rotating)... no science involved