daScript/examples/tutorial/tutorial03.cpp at master · jamestiotio/daScript · GitHub

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#include "daScript/daScript.h"

using namespace das;

// example type, which we are going to expose to das

struct Color {

uint8_t r, g, b, a;

float luminance() const { return 0.2126f*r + 0.7152f*g + 0.0722f*b; }

};

// create type factory, so that type can be bound

MAKE_TYPE_FACTORY(Color, Color);

// create type annotation, which exposes it to C++

struct ColorAnnotation : public ManagedStructureAnnotation<Color,true,true> {

ColorAnnotation(ModuleLibrary & ml) : ManagedStructureAnnotation ("Color", ml) {

// expose individual fields

addField<DAS_BIND_MANAGED_FIELD(r)>("r");

addField<DAS_BIND_MANAGED_FIELD(g)>("g");

addField<DAS_BIND_MANAGED_FIELD(b)>("b");

addField<DAS_BIND_MANAGED_FIELD(a)>("a");

// expose properties

addProperty<DAS_BIND_MANAGED_PROP(luminance)>("luminance");

}

virtual bool isLocal() const override { return true; } // this ref-value can appear as local variable in das

virtual bool canCopy() const override { return true; } // this ref-value can be copied

virtual bool canMove() const override { return true; } // this ref-value can be moved

};

// custom function, which takes type as an input, as well as returns it

Color makeGray ( const Color & c ) {

uint8_t lum = uint8_t ( min ( c.luminance(), 255.0f ) );

return { lum, lum, lum, c.a };

}

// making custom builtin module

class Module_Tutorial03 : public Module {

public:

Module_Tutorial03() : Module("tutorial_03") { // module name, when used from das file

ModuleLibrary lib(this);

lib.addBuiltInModule();

// register custom type annotation

addAnnotation(make_smart<ColorAnnotation>(lib));

// note SimNode_ExtFuncCallAndCopyOrMove - this means function returns ref type value,

// which needs to be copied or moved

addExtern<DAS_BIND_FUN(makeGray),SimNode_ExtFuncCallAndCopyOrMove>(*this, lib, "make_gray",

SideEffects::none, "makeGray");

}

};

// registering module, so that its available via 'NEED_MODULE' macro

REGISTER_MODULE(Module_Tutorial03);

#define TUTORIAL_NAME "/examples/tutorial/tutorial03.das"

#include "tutorial.inc"

int main( int, char * [] ) {

// request all da-script built in modules

NEED_ALL_DEFAULT_MODULES;

// request our custom module

NEED_MODULE(Module_Tutorial03);

// Initialize modules

Module::Initialize();

// run the tutorial

tutorial();

// shut-down daScript, free all memory

Module::Shutdown();

return 0;

}

daScript/examples/tutorial/tutorial03.cpp at master · jamestiotio/daScript · GitHub

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