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path: root/src/lua/modules/graphics/jsl.cpp
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#include "lua/modules/luax.h"
#include "lua/modules/types.h"
#include "lua/common/common.h"
#include "libjin/jin.h"

namespace jin
{
namespace lua
{
    
	using namespace jin::graphics;

	typedef Ref<JSLProgram>& JSLRef;

    static inline JSLRef checkJSLProgram(lua_State* L)
    {
        Proxy* proxy = (Proxy*)luax_checktype(L, 1, JIN_GRAPHICS_SHADER);
		return proxy->getRef<JSLProgram>();
    }

    /**
    * jsl:sendNumber("variable", 0.1)
    */
    static int l_sendNumber  (lua_State* L)
    {
        JSLRef ref = checkJSLProgram(L);
        const char* variable = luax_checkstring(L, 2);
        float number = luax_checknumber(L, 3);
        ref->sendFloat(variable, number);
        return 0;
    }

    static int l_sendTexture (lua_State* L)
    {
        JSLRef ref = checkJSLProgram(L);
        const char* variable = luax_checkstring(L, 2);
        Proxy* proxy = (Proxy*)luax_checktype(L, 3, JIN_GRAPHICS_TEXTURE);
        Ref<Texture>& tex = proxy->getRef<Texture>();
        ref->sendTexture(variable, tex.getObject());
        return 0;
    }

    static int l_sendCanvas  (lua_State* L)
    {
        JSLRef ref = checkJSLProgram(L);
        const char* variable = luax_checkstring(L, 2);
        Proxy* proxy = (Proxy*)luax_checktype(L, 3, JIN_GRAPHICS_CANVAS);
        Ref<Canvas>& canvas = proxy->getRef<Canvas>();
        ref->sendCanvas(variable, canvas.getObject());
        return 0;
    }

    static int l_sendVec2    (lua_State* L)
    {
        JSLRef ref = checkJSLProgram(L);
        const char* variable = luax_checkstring(L, 2);
        float x = luax_checknumber(L, 3);
        float y = luax_checknumber(L, 4);
        ref->sendVec2(variable, x, y);
        return 0;
    }

    static int l_sendVec3    (lua_State* L)
    {
        JSLRef ref = checkJSLProgram(L);
        const char* variable = luax_checkstring(L, 2);
        float x = luax_checknumber(L, 3);
        float y = luax_checknumber(L, 4);
        float z = luax_checknumber(L, 5);
        ref->sendVec3(variable, x, y, z);
        return 0;
    }

    static int l_sendVec4    (lua_State* L)
    {
        JSLRef ref = checkJSLProgram(L);
        const char* variable = luax_checkstring(L, 2);
        float x = luax_checknumber(L, 3);
        float y = luax_checknumber(L, 4);
        float z = luax_checknumber(L, 5);
        float w = luax_checknumber(L, 6);
        ref->sendVec4(variable, x, y, z, w);
        return 0;
    }

    static int l_sendColor   (lua_State* L)
    {
        return l_sendVec4(L);
    }

    static int l_gc(lua_State* L)
    {
        Proxy* proxy = (Proxy*)luax_checktype(L, 1, JIN_GRAPHICS_SHADER);
        proxy->release();
        return 0;
    }

    static const luaL_Reg f[] = {
        { "__gc",        l_gc          },
        { "sendNumber",  l_sendNumber  },
        { "sendTexture", l_sendTexture },
        { "sendCanvas",  l_sendCanvas  },
        { "sendVec2",    l_sendVec2    },
        { "sendVec3",    l_sendVec3    },
        { "sendVec4",    l_sendVec4    },
        { "sendColor",   l_sendColor   },
        { 0,             0             }
    };

    /**
    * JSL program
    */
    int luaopen_JSL(lua_State* L)
    {
        luax_newtype(L, JIN_GRAPHICS_SHADER, f);
        return 0;
    }

} // lua
} // jin