CSG/tests/DemoGrid.h

0001 #pragma once
0002
0003 #include <array>
0004 #include <vector>
0005
0006 /**
0007 DemoGrid
0008 =========
0009
0010 Input high level specification example.
0011 Should not be part of the CSG model.
0012
0013 Currently using glm::mat4 for the transforms but as
0014 there are no rotations there is not much reason for this.
0015 Using qat4.h would avoid the Sys.h, due to inherent multi-typing.
0016
0017 Actually is makes more sense for the foundry to hold
0018 the transforms and for DemoGrid+Geo to just act as an example interface
0019 to populating the foundry.
0020
0021 The foundry is central to the CSG model.
0022
0023 **/
0024
0025 struct CSGFoundry ;
0026
0027
0028 struct DemoGrid
0029 {
0030     static float4 AddInstances( CSGFoundry* foundry_, unsigned ias_idx_, unsigned num_solid_ );
0031
0032     CSGFoundry*            foundry ;
0033     unsigned               ias_idx ;
0034     unsigned               num_solid ;
0035     float                  gridscale ;
0036
0037     std::array<int,9>      grid ;
0038     std::vector<unsigned>  solid_modulo ;
0039     std::vector<unsigned>  solid_single ;
0040
0041     DemoGrid(CSGFoundry* foundry, unsigned ias_idx, unsigned num_solid);
0042     const float4 center_extent() const ;
0043
0044     void init();
0045
0046 };
0047
0048