Libraries.Game.Graphics.DepthTestAttribute Documentation

Inherits from: Libraries.Game.Graphics.Attribute, Libraries.Language.Object

Summary

Variable Summary Table

VariablesDescription
integer depthFunctionThe depth test function to be used by OpenGL. A value of 0 will disable it. The default value is the value of the GL_LEQUAL constan
boolean depthMaskWhether to write to the underlying depth buffer. Default value is tru
integer depthRangeFarA value used by OpenGL for depth testing. Mapping of far clipping plane to window coordinates, default value of
integer depthRangeNearA value used by OpenGL for depth testing. Mapping of near clipping plane to window coordinates, default value of
text ALIASThe depth test function to be used by OpenGL. A value of 0 will disable it. The default value is the value of the GL_LEQUAL constan

Actions Summary Table

ActionsDescription
Compare(Libraries.Language.Object object)This action compares two object hash codes and returns an integer.
Copy()A value used by OpenGL for depth testing.
Equals(Libraries.Game.Graphics.Attribute other)This action will test to see if two Attributes are of the same type.
Equals(Libraries.Language.Object object)This action determines if the given object is equal to this Attribute.
GetAttributeAlias(integer type)GetAttributeAlias will take an integer code for a particular type of Attribute and return a text alias representing that type.
GetAttributeType(text alias)GetAttributeType will take a text alias for a particular type of Attribute and return an integer code representing that type.
GetDepthTestValue()A value used by OpenGL for depth testing.
GetHashCode()This action gets the hash code for an object.
HashCode()This action will return a hash code that identifies an Attribute by its type.
SetAttribute(integer setType)SetAttribute will set data used by this Attribute.

Actions Documentation

Compare(Libraries.Language.Object object)

This action compares two object hash codes and returns an integer. The result is larger if this hash code is larger than the object passed as a parameter, smaller, or equal. In this case, -1 means smaller, 0 means equal, and 1 means larger. This action was changed in Quorum 7 to return an integer, instead of a CompareResult object, because the previous implementation was causing efficiency issues.

Example Code

Object o
        Object t
        integer result = o:Compare(t) //1 (larger), 0 (equal), or -1 (smalle

Parameters

Return

integer: The Compare result, Smaller, Equal, or Larger.

Copy()

A value used by OpenGL for depth testing. Mapping of far clipping plane to window coordinates, default value of

Return

Libraries.Game.Graphics.Attribute:

Equals(Libraries.Game.Graphics.Attribute other)

This action will test to see if two Attributes are of the same type. Note that it will not test if the contents of the Attributes are the same.

Example Code

use Libraries.Game.Game
    use Libraries.Game.Graphics.ColorAttribute
    use Libraries.Game.Graphics.Attribute
    use Libraries.Game.Graphics.Color

    class Main is Game

        action Main
            StartGame()
        end

        action CreateGame
            Color color

            // Using the ColorAttribute class, which inherits from Attribute.
            ColorAttribute attribute1

            attribute1:SetAttribute(attribute1:GetDiffuseValue(), color:Green())
            Attribute attribute2 = attribute1:Copy()

            output "attribute1 = attribute2 is " + attribute1:Equals(attribute2)

        end
    e

Parameters

Return

boolean: Whether or not the two attributes are of the same type.

Equals(Libraries.Language.Object object)

This action determines if the given object is equal to this Attribute.

Parameters

Return

boolean: True if the object is an Attribute with the same type, otherwise it returns fals

GetAttributeAlias(integer type)

GetAttributeAlias will take an integer code for a particular type of Attribute and return a text alias representing that type. Each class that inherits from Attribute will contain a series of actions that will return an integer code for a given type. The contents of this Attribute are not considered during this action, and can be ignored.

Example Code

use Libraries.Game.Game
    use Libraries.Game.Graphics.TextureAttribute

    class Main is Game

        action Main
            StartGame()
        end

        action CreateGame
            // Using the TextureAttribute class, which inherits from Attribute.
            TextureAttribute attribute
            text alias = attribute:GetAttributeAlias(attribute:GetDiffuseValue())

            output "The alias for a diffuse TextureAttribute is " + alias
        end
    e

Parameters

Return

text: A text alias representing the described Attribute type.

GetAttributeType(text alias)

GetAttributeType will take a text alias for a particular type of Attribute and return an integer code representing that type. Each class that inherits from Attribute will contain a series of public constant text fields that contain an alias for a given type. The contents of this Attribute are not considered during this action, and can be ignored.

Example Code

use Libraries.Game.Game
    use Libraries.Game.Graphics.TextureAttribute

    class Main is Game

        action Main
            StartGame()
        end

        action CreateGame
            // Using the TextureAttribute class, which inherits from Attribute.
            TextureAttribute attribute
            integer code = attribute:GetAttributeType(attribute:DIFFUSE_ALIAS)

            output "The type code for a diffuse TextureAttribute is " + code
        end
    e

Parameters

Return

integer: An integer code representing the described Attribute type.

GetDepthTestValue()

A value used by OpenGL for depth testing. Mapping of near clipping plane to window coordinates, default value of

Return

integer:

GetHashCode()

This action gets the hash code for an object.

Example Code

Object o
        integer hash = o:GetHashCode

Return

integer: The integer hash code of the object.

HashCode()

This action will return a hash code that identifies an Attribute by its type.

Example Code

use Libraries.Game.Game
    use Libraries.Game.Graphics.ColorAttribute
    use Libraries.Game.Graphics.Attribute
    use Libraries.Game.Graphics.Color

    class Main is Game

        action Main
            StartGame()
        end

        action CreateGame
            // Using the ColorAttribute class, which inherits from Attribute.
            ColorAttribute attribute
            Color green
            green:SetColor(0, 1, 0, 1)
            attribute:SetAttribute(attribute:GetDiffuseValue(), green)

            output "The hash code for the attribute is " + attribute:GetHashCode()
        end
    e

Return

integer:

SetAttribute(integer setType)

SetAttribute will set data used by this Attribute. Note that most classes which inherit from Attribute will have their own implementations of SetAttribute which may require different parameters - e.g., to use SetAttribute in the ColorAttribute class, it requires both an integer type, but also a color. Most users should not use this action directly.

Parameters