[SOLVED] ObjectDynamic features

[sergey.pozhidaev]

please tell me about specific of Z-coordinete location in ObjectDynamic.

i found 2 ways:

 

1. place Z coordinate in 2nd vertex buffer position at 4- vec4 component and use non-shader material

2. place XYZ pos in 0 vertex buffer position and use shader material

 

 

BUT question: if i do not want use shaders to render my object, how to economy memory :D, why so magic trick to transfer only Z coordinate in 2nd buffer pos.

and where vec2? script compiler shows errors

 

 

1-------------------------------------------------------------------------------------------------------------------------------

<material name="dynamic_mesh_base" parent="mesh_base">

    <state name="emission" type="switch" items="none,opacity,transparent,lightmap">1</state>

    <bind object="dynamic" to="mesh"/>

    <parameter name="emission_color" type="color" shared="1">0.6 0.85 1 1</parameter>

</material>

 

ObjectDynamic od = add_editor(new ObjectDynamic(1));

od.setMaterial("dynamic_mesh_base","*");

od.setProperty("surface_base","*");

 

void add_vertex(vec3 vertex)

{

    od.addVertexFloat(0,vertex,2);

    od.setVertexFloat(2,vec4(0,0,0,vertex.z),4);

}

 

od.setVertexFormat((

    ivec3(0,OBJECT_DYNAMIC_TYPE_FLOAT,2),

    ivec3(4,OBJECT_DYNAMIC_TYPE_FLOAT,1),

    ivec3(20,OBJECT_DYNAMIC_TYPE_FLOAT,4)

));

 

add_vertex(vec3(-1,0,0));

add_vertex(vec3(5,0,0));

add_vertex(vec3(-1,1,1));

add_vertex(vec3(5,1,1));

 

 

 

2-------------------------------------------------------------------------------------------------------------------------------

<material name="lines" editable="0">

    <!-- options -->

    <options cast_shadow="0" receive_shadow="0" cast_world_shadow="0" receive_world_shadow="0"/>

 

    <!-- ambient shaders -->

    <shader pass="ambient" object="dynamic"

    vertex="Resources/shaders/lines/vertex.shader" 

    fragment="Resources/shaders/lines/fragment.shader" />

</material>

 

ObjectDynamic od = add_editor(new ObjectDynamic(1));

od.setMaterial("lines","*");

od.setProperty("surface_base","*");

 

void add_vertex(vec3 vertex)

{

    od.addVertexFloat(0,vertex,3);

}

 

od.setVertexFormat((

    ivec3(0,OBJECT_DYNAMIC_TYPE_FLOAT,3)

));

 

add_vertex(vec3(-1,0,0));

add_vertex(vec3(5,0,0));

add_vertex(vec3(-1,1,1));

add_vertex(vec3(5,1,1));

 

[frustum]

Z coordinate is located inside normal W component.

the mesh vertex layout is:

float2 xy;
half4 texcoord;
half4 normal; // W is Z coordinate
half4 tangent; // W is binormal orientation.