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[[Image:Eye demoman.jpg|thumb|The Demoman's eyeball.]]
[[File:Eye demoman.jpg|thumb|The Demoman's eyeball, using the [[EyeRefract]] shader.]]
[[Image:Eye alyxep2.jpg|thumb|Alyx's eyeball in Ep2.]]
[[File:Eye alyxep2.jpg|thumb|Alyx's eyeball in [[Episode Two]], using the obsolete [[Eyes]] shader.]]
[[Image:Eye vortep2.jpg|thumb|A vortigaunt's largest eye. The iris covers its entire surface.]]
[[File:Eye vortep2.jpg|thumb|A vortigaunt's largest eye. The iris covers its entire surface.]]
{{For|about=the [[QC]] property of [[$model]]|the shaders used to render the eyes|{{ent|EyeRefract}} and {{ent|Eyes}}|the tool|[[qc_eyes]]}}
'''<code>Eyeball</code>''' is a property of [[$model (QC)|$model]]. It defines the data needed to properly render a character's eyes, defining the name, positioning, size and material of the eyeball.


'''<code>Eyeball</code>''' is a property of [[$model (QC)|$model]]. It consists of two components:
== Parameters ==


# A static eyeball surface on the model. Must have a unique material.
{{tip|The <code>[[qc_eyes]]</code> tool can help you manage the potentially confusing string of numbers needed for this command.}}
# A dynamic [[Wikipedia:Iris (anatomy)|iris]] 'decal' that travels over the eyeball to simulate the eye looking in different directions.
 
{{tip|An iris material can cover the entire surface of the eye if need be.}}
 
== Parameters ==


;<code><name></code>
;<code><name></code>
Line 16: Line 13:
;<code><bone_name></code>
;<code><bone_name></code>
: The bone which the eye is parented to, typically the head.
: The bone which the eye is parented to, typically the head.
;<code><X> <Y> <Z></code>
;<code><[[X]]> <[[Y]]> <[[Z]]></code>
: World location of the center of the ball of the eye.
: World location of the center of the ball of the eye. While your eye doesn't need to be a sphere in the model, Source will always map the material according to an invisible ball.
;<code><material_name></code>
;<code><material_name></code>
: Material above which the iris material will be drawn. Make sure every eye has a unique one!
: Material of the eye. Make sure each or every eye has a unique one. It is recommended to use a material using the <code>EyeRefract</code> shader.
;<code><diameter></code>
;<code><diameter></code>
: Diameter of the ball of the eye. Prevents eyes rolling inside the head. Note that this means that the iris will travel in a circle even though human eyes are oval: your model's [[flex]] should accommodate for this.
: Width of the eyeball when viewed from the front. Used to prevent the iris from rolling inside the head. {{note|Doesnt seem to take any effect since the Y axis of the eyes overrides this feature {{Todo| Further testing}}}}
;<code><angle></code>
;<code><angle></code>
: Default yaw offset (from directly forward) for iris. Humans are typically 2-4 degrees [[Wikipedia:Strabismus|wall-eyed]]. Not setting this correctly will result in either your characters appearing cross-eyed, or if you've compensated by misplacing the ball of the eye, them not tracking side to side.
: Default yaw offset (from directly forward) for the iris. Humans are typically 2-4 degrees [[Wikipedia:Strabismus|wall-eyed]]. Not setting this correctly will result in either your characters appearing cross-eyed, or if you've compensated by misplacing the ball of the eye, them not tracking side to side. Should be a negative value for the left eye, and a positive value for the right eye.
;<code><iris_material></code>
;<code><iris_material></code>
: Material to use as the iris texture. {{todo|This now appears to be a property of the eyeball material. Need some OB QCs to confirm.}}
: Material used as the iris texture. (This property is deprecated)
;<code><pupil_scale></code>
;<code><iris_scale></code>
: Scale of the iris texture.
: Scale of the iris texture. The model's UV map does not influence the eye material in any way. {{todo|While this is true for <code>EyeRefract</code>, is this also true for the <code>Eyes</code> shader?}}


=== Example ===
=== Example ===


  [[$model (QC)|$model]] "female_01" "female_01_reference_RE.smd" {
Hover your mouse over each value for its description.
    '''eyeball''' righteye ValveBiped.Bip01_Head1 -1.261 -3.702 64.974 eyeball_r 1 4 pupil_r 0.66
 
  [[$model (QC)|$model]] female_01 "female_01_reference_RE"
{
'''eyeball''' <span title="Eye name" style="background:#DFDFDF;">righteye</span> <span title="Parent bone" style="background:#DFDFDF;">ValveBiped.Bip01_Head1</span> <span title="Center co-ords" style="background:#DFDFDF;">-1.261 -3.702 64.974</span> <span title="Eye white material" style="background:#DFDFDF;">eyeball_r</span> <span title="Diameter" style="background:#DFDFDF;">1</span> <span title="Angle" style="background:#DFDFDF;">4</span> <span title="Iris material" style="background:#DFDFDF;">pupil_r</span> <span title="Iris scale" style="background:#DFDFDF;">0.66</span>
  }
  }


== See also ==
== See also ==


* The <code>[[EyeRefract]]</code> and <code>[[Eyes]]</code> shaders
* [[Eye Position Setup]], for a guide to calculating the various numbers required
* [[Eye Position Setup]], for a guide to calculating the various numbers required
* <code>[[qc_eyes]]</code>, a tool to aid your calculations


[[Category:Modeling]]
[[Category:Modeling]]

Latest revision as of 09:46, 16 August 2024

The Demoman's eyeball, using the EyeRefract shader.
Alyx's eyeball in Episode Two, using the obsolete Eyes shader.
A vortigaunt's largest eye. The iris covers its entire surface.
This article is about the QC property of $model. For the shaders used to render the eyes, see EyeRefract and Eyes.  For the tool, see qc_eyes.

Eyeball is a property of $model. It defines the data needed to properly render a character's eyes, defining the name, positioning, size and material of the eyeball.

Parameters

Tip.pngTip:The qc_eyes tool can help you manage the potentially confusing string of numbers needed for this command.
<name>
Name of eyeball, used to match eyelid rules. For humans, use righteye and lefteye.
<bone_name>
The bone which the eye is parented to, typically the head.
<X> <Y> <Z>
World location of the center of the ball of the eye. While your eye doesn't need to be a sphere in the model, Source will always map the material according to an invisible ball.
<material_name>
Material of the eye. Make sure each or every eye has a unique one. It is recommended to use a material using the EyeRefract shader.
<diameter>
Width of the eyeball when viewed from the front. Used to prevent the iris from rolling inside the head.
Note.pngNote:Doesnt seem to take any effect since the Y axis of the eyes overrides this feature
Todo:  Further testing
<angle>
Default yaw offset (from directly forward) for the iris. Humans are typically 2-4 degrees wall-eyed. Not setting this correctly will result in either your characters appearing cross-eyed, or if you've compensated by misplacing the ball of the eye, them not tracking side to side. Should be a negative value for the left eye, and a positive value for the right eye.
<iris_material>
Material used as the iris texture. (This property is deprecated)
<iris_scale>
Scale of the iris texture. The model's UV map does not influence the eye material in any way.
Todo: While this is true for EyeRefract, is this also true for the Eyes shader?

Example

Hover your mouse over each value for its description. 

$model female_01 "female_01_reference_RE"
{
	eyeball righteye ValveBiped.Bip01_Head1 -1.261 -3.702 64.974 eyeball_r 1 4 pupil_r 0.66
}

See also

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