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  • ISO/IEC 18023-1:200x(E) — Table 6.291 DRM_Twinkling_Light_Behaviour
    Associated to one way inherited None Associated to one way None Associated by one way inherited None Associated by one way None Associated with two way inherited None Associated with two way None Composed of two way inherited None Composed of two way None Composed of two way metadata inherited None Composed of two way metadata None Component of two way inherited one or more DRM Light Rendering Properties instances

    Original URL path: http://standards.sedris.org/18023-1/C038442e-html/C038442e_FILES/MAIN_C038442e/Part1/DataItems/Twinkling_Light_Behaviour.html (2016-02-11)
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  • ISO/IEC 18023-1:200x(E) — Table 6.21 DRM_Blend_Directional_Light
    to display the light is computed as follows Let U upper plane angular offset L lower plane angular offset O observer angular offset D colour to display P primary colour S secondary colour Then Case 1 O U D P Case 2 L O U D O L P U O S U L Case 3 O L D S Class diagram Figure 6 20 DRM Blend Directional Light Inherited field elements Field name Range Field data type None Field elements Field name Range Field data type upper plane angular offset π π Long Float lower plane angular offset π π Long Float Default field values Default field values for DRM Blend Directional Light Associated to one way inherited None Associated to one way None Associated by one way inherited None Associated by one way None Associated with two way inherited None Associated with two way None Composed of two way inherited one DRM Lobe Data instance 1 one DRM Location instance Composed of two way None Composed of two way metadata inherited None Composed of two way metadata None Component of two way inherited one or more DRM Light Rendering Properties instances Component of two way None Constraints Inheritance rule for DRM Location Publishable object Clarifications 1 The DRM Lobe Data component specifies the lobe shape Example s For an airplane approaching a runway the colour of the approach lights can change depending on the relationship of the airplane to the correct approach slope as depicted in Figure 6 21 Figure 6 21 DRM Blend Directional Light blend section example This can be represented by a DRM Blend Directional Light instance having both a primary and a secondary colour as depicted in Figure 6 22 Figure 6 22 DRM Blend Directional Light example If the position of the observer

    Original URL path: http://standards.sedris.org/18023-1/C038442e-html/C038442e_FILES/MAIN_C038442e/Part1/DataItems/Blend_Directional_Light.html (2016-02-11)
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  • ISO/IEC 18023-1:200x(E) — Table 6.44 DRM_Cone_Directional_Light
    by the horizontal and vertical DRM Lobe Data instance widths is reached Outside the lobe the intensity is minimum colour intensity If the minimum colour intensity value is 0 0 the secondary colour if present will be seen outside the lobe at full intensity If no secondary colour is present nothing is visible outside the lobe If the value of the invisible behind field is TRUE the directional light is invisible when viewed from behind the plane located at the apex and perpendicular to the LIGHT DIRECTION vector If the value of the invisible behind field is FALSE the directional light is visible when viewed from behind Class diagram Figure 6 48 DRM Cone Directional Light Inherited field elements Field name Range Field data type None Field elements Field name Range Field data type has plane Boolean plane angular offset π π Long Float use full intensity Boolean minimum colour intensity 0 0 1 0 Long Float invisible behind Boolean Default field values Default field values for DRM Cone Directional Light Associated to one way inherited None Associated to one way None Associated by one way inherited None Associated by one way None Associated with two way inherited None Associated with two way None Composed of two way inherited one DRM Lobe Data instance 1 one DRM Location instance Composed of two way None Composed of two way metadata inherited None Composed of two way metadata None Component of two way inherited one or more DRM Light Rendering Properties instances Component of two way None Constraints Inheritance rule for DRM Location Publishable object Clarifications 1 The DRM Lobe Data component specifies the lobe shape Example s A 100 kilometre highway has regularly spaced lampposts Each lamp is represented using a DRM Cone Directional Light instance with a DRM Lobe Data component pointing down If all the lamps use the same DRM Cone Directional Light instance all the directions will be parallel Due to the curvature of the Earth very few of the lights will shine directly down the others will be slightly skewed If instead the set of lamps is divided into smaller contiguous groups each with its own DRM Cone Directional Light instance using a DRM Location component near the centre of the group the skewing effect will be greatly minimized Consider a DRM Cone Directional Light instance with a primary colour that is a DRM Colour Index instance with full intensity intensity level 0 8 as depicted in Figure 6 49 Figure 6 49 DRM Cone Directional Light primary colour DRM Colour Index example Since the lobe shape results in a circular cone the following equation may be used to compute the final intensity for this example final intensity minimum colour intensity width 2 0 observer angular offset width 2 0 intensity level minimum colour intensity where width is the diameter of the cone either the horizontal width or the vertical width At 0 26179 radians approximately 15 degrees from the LIGHT DIRECTION vector in the horizontal direction

    Original URL path: http://standards.sedris.org/18023-1/C038442e-html/C038442e_FILES/MAIN_C038442e/Part1/DataItems/Cone_Directional_Light.html (2016-02-11)
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  • ISO/IEC 18023-1:200x(E) — Table 6.211 DRM_Pyramid_Directional_Light
    is 0 0 the secondary colour if present shall be seen outside the lobe at full intensity If no secondary colour is present nothing shall be visible outside the lobe If the value of the invisible behind field is TRUE the directional light is invisible when viewed from behind the plane of the directional light Class diagram Figure 6 257 DRM Pyramid Directional Light Inherited field elements Field name Range Field data type None Field elements Field name Range Field data type use full intensity Boolean minimum colour intensity 0 0 1 0 Long Float invisible behind Boolean Default field values Default field values for DRM Pyramid Directional Light Associated to one way inherited None Associated to one way None Associated by one way inherited None Associated by one way None Associated with two way inherited None Associated with two way None Composed of two way inherited one DRM Lobe Data instance 1 one DRM Location instance Composed of two way None Composed of two way metadata inherited None Composed of two way metadata None Component of two way inherited one or more DRM Light Rendering Properties instances Component of two way None Constraints Inheritance rule for DRM Location Publishable object Clarifications 1 The DRM Lobe Data component specifies the lobe shape Example s Consider a light represented by a DRM object L with a DRM Light Rendering Properties component having a DRM Pyramid Directional Light component of its own The primary colour of the light is represented by a DRM Colour Index component of L that has colour mapping PRIMARY LIGHT RENDERING BEHAVIOUR and intensity level 0 9 and which also has a secondary colour The minimum colour intensity is 0 0 The use full intensity flag is FALSE The DRM Lobe Data component has horizontal width 1 04

    Original URL path: http://standards.sedris.org/18023-1/C038442e-html/C038442e_FILES/MAIN_C038442e/Part1/DataItems/Pyramid_Directional_Light.html (2016-02-11)
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  • ISO/IEC 18023-1:200x(E) — Table 6.274 DRM_Texture_Coordinate
    for each vertex of the object The image is mapped to the DRM object by interpolating between the various texture coordinates specified at the vertices Whether a specified DRM Texture Coordinate instance corresponds to exactly one texel in the texture definition or to a blending of many texel values from the definition is a decision made by the texture interpolation algorithm used to display the texture The methods for calculating the interpolated texture values and for blending the texture onto the object are determined by a DRM Image Mapping Function instance NOTE According to 7 2 42 Image mapping functions and texture coordinates DRM Texture Coordinate instances only appear within the scope of some DRM Image Mapping Function instance The s field specifies the s value of the s t texture coordinate For a DRM Texture Coordinate instance with a DRM Texture Coordinate Control Link component X where the s expression index field of X is non zero the value of the s field is obtained from X The t field specifies the t value of the s t texture coordinate For a DRM Texture Coordinate instance with a DRM Texture Coordinate Control Link component X where the t expression index field of X is non zero the value of the t field is obtained from X Class diagram Figure 6 342 DRM Texture Coordinate Inherited field elements Field name Range Field data type None Field elements Field name Range Field data type s Long Float t Long Float Default field values Default field values for DRM Texture Coordinate Associated to one way inherited None Associated to one way None Associated by one way inherited None Associated by one way None Associated with two way inherited None Associated with two way None Composed of two way inherited None Composed of

    Original URL path: http://standards.sedris.org/18023-1/C038442e-html/C038442e_FILES/MAIN_C038442e/Part1/DataItems/Texture_Coordinate.html (2016-02-11)
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  • ISO/IEC 18023-1:200x(E) — Table 6.272 DRM_Tack_Point
    DRM Tack Point Associated to one way inherited None Associated to one way None Associated by one way inherited None Associated by one way None Associated with two way inherited None Associated with two way None Composed of two way inherited None Composed of two way one DRM Location instance one or more ordered DRM Texture Coordinate instances Composed of two way metadata inherited None Composed of two way metadata

    Original URL path: http://standards.sedris.org/18023-1/C038442e-html/C038442e_FILES/MAIN_C038442e/Part1/DataItems/Tack_Point.html (2016-02-11)
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  • ISO/IEC 18023-1:200x(E) — Table 6.24 DRM_Camera_Point
    camera far metres from the origin The projection type is specified by the projection field and may specify either an orthographic or a perspective projection The projection type also specifies the fundamental shape of the viewing frustum For an orthographic projection the viewing frustum is a parallelepiped For a perspective projection the viewing frustum is a truncated pyramid The projection field specifies the type of projection If projection ORTHOGRAPHIC the viewing frustum is the parallelepiped volume between the two clipping planes bounded by the rectangle specified by left bottom as its lower left corner and right top as its upper right corner If projection PERSPECTIVE the viewing frustum can be described in one of two ways In the first method the perspective viewing frustum can be defined as the volume starting at the near clipping plane and expanding to the far clipping plane where the projection lines intersect the corners of the rectangle specified on the near clipping plane by left bottom as the lower left corner and right top as the upper right corner In the second method the perspective viewing volume can be described by a horizontal field of view an aspect ratio that is the width of the viewing frustum divided by its height and the distance to the near and far clipping planes The camera near field specifies the distance from camera position to near clipping plane in metres The camera far field specifies the distance from camera position to far clipping plane in metres If the value of the use left bottom right top field is TRUE use the parameters from the left bottom right and top fields These fields are always used for orthographic viewing but perspective viewing can either use these fields or the field of view and aspect ratio fields The left field specifies the U coordinate of the lower left corner of the rectangle in the near clipping plane The bottom field specifies the V coordinate of the lower left corner of the rectangle in the near clipping plane The right field specifies the U coordinate of the upper right corner of the rectangle in the near clipping plane The top field specifies the V coordinate of the upper right corner of the rectangle in the near clipping plane The horizontal field of view field specifies the angle in radians of the horizontal field of view This value is used for perspective viewing if the use left bottom right top flag is FALSE The aspect ratio field specifies the width of the frustum divided by its height This value is used for perspective viewing if the use left bottom right top flag is FALSE Class diagram Figure 6 25 DRM Camera Point Inherited field elements Field name Range Field data type None Field elements Field name Range Field data type projection Camera Projection Type camera near Long Float camera far Long Float use left bottom right top Boolean left Long Float bottom Long Float right Long Float top Long Float horizontal

    Original URL path: http://standards.sedris.org/18023-1/C038442e-html/C038442e_FILES/MAIN_C038442e/Part1/DataItems/Camera_Point.html (2016-02-11)
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  • ISO/IEC 18023-1:200x(E) — Table 6.262 DRM_Stamp_Behaviour
    3D component The axes are positioned at the centre of rotation aligned with the equivalent SRF axes Geometry with a DRM Stamp Behaviour instance is normally planar in nature and is considered to face along the normal of that plane If the clockwise limit of the rotation data for an axis is set to and its counterclockwise limit is set to the aggregating DRM Geometry Hierarchy instance can rotate freely about that axis If all axis limits are set in this way the DRM Geometry Hierarchy instance rotates freely in any direction about the centre of rotation The u axis limits field specifies the angular limits around the u axis The v axis limits field specifies the angular limits around the v axis The w axis limits field specifies the angular limits around the w axis Class diagram Figure 6 325 DRM Stamp Behaviour Inherited field elements Field name Range Field data type None Field elements Field name Range Field data type u axis limits Rotation Data v axis limits Rotation Data w axis limits Rotation Data Default field values Default field values for DRM Stamp Behaviour Associated to one way inherited None Associated to one way None Associated by one way inherited None Associated by one way None Associated with two way inherited None Associated with two way None Composed of two way inherited None Composed of two way one DRM Location 3D instance 1 Composed of two way metadata inherited None Composed of two way metadata None Component of two way inherited None Component of two way zero or more DRM Aggregate Geometry instances zero or more DRM Geometry Model Instance instances Constraints DRM Stamp Behaviour constraints Publishable object Clarifications 1 The DRM Location 3D component specifies the centre of rotation Example s Consider a DRM Union Of

    Original URL path: http://standards.sedris.org/18023-1/C038442e-html/C038442e_FILES/MAIN_C038442e/Part1/DataItems/Stamp_Behaviour.html (2016-02-11)
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