Difference between revisions of "LlSetAlpha"
Jump to navigation
Jump to search
All Issues ~ Search JIRA for related Bugs
(fix bug in cloak function; would not fully cloak object before (left alpha at 0.1)) |
(Add Blinn-Phong terminology to page following PBR release.) |
||
| (3 intermediate revisions by 3 users not shown) | |||
| Line 1: | Line 1: | ||
{{LSL_Function/face|face}} {{LSL_Function/alpha|alpha}} | {{LSL_Function | ||
|inject-2={{LSL_Function/face|face}}{{LSL_Function/alpha|alpha}} | |||
|func_id=51|func_sleep=0.0|func_energy=10.0 | |func_id=51|func_sleep=0.0|func_energy=10.0 | ||
|func=llSetAlpha|sort=SetAlpha | |func=llSetAlpha|sort=SetAlpha | ||
| Line 5: | Line 6: | ||
|p2_type=integer|p2_name=face | |p2_type=integer|p2_name=face | ||
|func_footnote | |func_footnote | ||
|func_desc=Sets the | |func_desc=Sets the [[PBR_Materials#Nomenclature_changes|Blinn-Phong]] {{LSLP|alpha}} on {{LSLP|face}} | ||
|return_text | |return_text | ||
|spec | |spec | ||
|caveats | |caveats | ||
|constants | |constants | ||
|examples=< | |examples=<source lang="lsl2"> | ||
float cloakSpeed = .1; | float cloakSpeed = 0.1; | ||
default | default | ||
{ | { | ||
touch_end(integer total_number) | |||
{ | { | ||
float alpha = 1.0; | |||
float | while(alpha > 0.0) | ||
{ | { | ||
alpha -= 0.1; | |||
llSetAlpha(alpha, ALL_SIDES); | |||
llSleep(cloakSpeed); | llSleep(cloakSpeed); | ||
} | } | ||
state cloaked; | state cloaked; | ||
| Line 31: | Line 31: | ||
state cloaked | state cloaked | ||
{ | { | ||
touch_end(integer total_number) | |||
{ | { | ||
float alpha; | |||
float | while (alpha < 1.0) | ||
{ | { | ||
alpha += 0.1; | |||
llSetAlpha(alpha, ALL_SIDES); | |||
llSleep(cloakSpeed); | llSleep(cloakSpeed); | ||
} | } | ||
state default; | state default; | ||
} | } | ||
} | } | ||
</ | </source> | ||
|helpers | |helpers | ||
|also_functions= | |also_functions= | ||
Latest revision as of 13:25, 1 December 2023
| LSL Portal | Functions | Events | Types | Operators | Constants | Flow Control | Script Library | Categorized Library | Tutorials |
Summary
Function: llSetAlpha( float alpha, integer face );| 51 | Function ID |
| 0.0 | Forced Delay |
| 10.0 | Energy |
Sets the Blinn-Phong alpha on face
| • float | alpha | – | from 0.0 (clear) to 1.0 (solid) (0.0 <= alpha <= 1.0) | |
| • integer | face | – | face number or ALL_SIDES |
If face is ALL_SIDES then the function works on all sides.
Caveats
- The function silently fails if its face value indicates a face that does not exist.
Examples
float cloakSpeed = 0.1;
default
{
touch_end(integer total_number)
{
float alpha = 1.0;
while(alpha > 0.0)
{
alpha -= 0.1;
llSetAlpha(alpha, ALL_SIDES);
llSleep(cloakSpeed);
}
state cloaked;
}
}
state cloaked
{
touch_end(integer total_number)
{
float alpha;
while (alpha < 1.0)
{
alpha += 0.1;
llSetAlpha(alpha, ALL_SIDES);
llSleep(cloakSpeed);
}
state default;
}
}
Notes
In practical terms, "alpha" means "transparency" or "visibility".
To be clear, llSetAlpha will only affect the prim that the script it is in. It will not affect any linked prims. To set the alpha state for those, use llSetLinkAlpha
See Also
Events
| • | changed | – | CHANGED_COLOR |
Functions
| • | llGetAlpha | – | Gets the prim's alpha | |
| • | llGetColor | – | Gets the prim's color | |
| • | llSetColor | – | Sets the prim's color | |
| • | llSetLinkColor | – | Sets link's color | |
| • | llSetLinkAlpha | – | Sets link's alpha |
Articles
| • | Translucent Color |