llSetTextureAnim

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/LSL

SetTextureAnim

llSetTextureAnim

Summary

Function: llSetTextureAnim( integer mode, integer face, integer sizex, integer sizey, float start, float length, float rate );

0.0	Forced Delay
10.0	Energy

Animate the texture on the specified face/faces by setting the texture scale and offset

• integer	mode	–	mask of Mode flags
• integer	face	–	face number or ALL_SIDES
• integer	sizex	–	horizontal frames (ignored for ROTATE and SCALE)
• integer	sizey	–	vertical frames (ignored for ROTATE and SCALE)
• float	start	–	Start position/frame number (or radians for ROTATE)
• float	length	–	number of frames to display (or radians for ROTATE)
• float	rate	–	frames per second (must not be zero)

start supports negative indexes. If face is ALL_SIDES then the function works on all sides. Frames are numbered from left to right, top to bottom, starting at 0.
If rate is negative, has the same effect as using the REVERSE flag.

Modes		Description
ANIM_ON	0x01	Texture animation is on.
LOOP	0x02	loop when animating textures.
REVERSE	0x04	Play animation in reverse direction.
PING_PONG	0x08	Play animation going forwards, then backwards.
SMOOTH	0x10	Slide in the X direction, instead of playing separate frames. In both SCALE and ROTATE modes, causes smooth transitions.
ROTATE	0x20	Animate texture rotation. Does not work with SCALE
SCALE	0x40	Animate the texture scale. Does not work with ROTATE

Caveats

• If start is out of bounds the script continues to execute without an error message.
• The function silently fails if its face value indicates a face that does not exist.
• You can only have one texture animation on a prim
  • Calling llSetTextureAnim more than once on a prim will reset it.
• You cannot combine ROTATE and SCALE
• sizex & sizey are both limited to a range of 0 to 255

Examples

This slides a texture smoothly and loops it when it gets to the end.

        llSetTextureAnim(ANIM_ON | SMOOTH | LOOP , ALL_SIDES, 1, 1, 1, 1, 1);

This slides a texture smoothly in the opposite direction

        llSetTextureAnim(ANIM_ON | SMOOTH | LOOP , ALL_SIDES, 1, 1, 1, 1, -1);

This divides a texture into 64 "cells", 8 across, and 8 down, and flips through them, left to right, top to bottom. This is useful for cell animation.

        llSetTextureAnim( ANIM_ON | LOOP, ALL_SIDES, 8, 8, 0, 64, 6.4 );

This rotates a texture counter-clockwise at 2 revolutions per second. Change the last value to -2*TWO_PI to rotate clockwise.

        llSetTextureAnim(ANIM_ON | SMOOTH | ROTATE | LOOP, ALL_SIDES,1,1,0, TWO_PI, 2*TWO_PI);

This scales a texture larger and smaller.

        llSetTextureAnim(ANIM_ON | SMOOTH | SCALE | PING_PONG | LOOP, ALL_SIDES, 1, 1, 1, 3, 2);

See Also

Articles

•

Negative Index

Deep Notes

Signature
function void llSetTextureAnim( integer mode, integer face, integer sizex, integer sizey, float start, float length, float rate );