#include "gxlight.hpp"
#include "gxgraphics.hpp"
#include "gxscene.hpp"

const float PI     = 3.14159265359f; //180 degrees
const float TWOPI  = PI * 2.0f;      //360 degrees
const float HALFPI = PI * .5f;       //90  degrees

gxLight::gxLight(gxScene* s, int type) : scene(s)
{
	memset(&d3d_light, 0, sizeof(d3d_light));

	switch (type) {
	case LIGHT_POINT:
		d3d_light.dltType = D3DLIGHT_POINT;
		break;
	case LIGHT_SPOT:
		d3d_light.dltType = D3DLIGHT_SPOT;
		break;
	default:
		d3d_light.dltType = D3DLIGHT_DIRECTIONAL;
	}

	d3d_light.dcvDiffuse.a = 1;
	d3d_light.dcvDiffuse.r = d3d_light.dcvDiffuse.g = d3d_light.dcvDiffuse.b = 1;
	d3d_light.dcvSpecular.r = d3d_light.dcvSpecular.g = d3d_light.dcvSpecular.b = 1;
	d3d_light.dvRange                                                           = D3DLIGHT_RANGE_MAX;
	d3d_light.dvTheta                                                           = 0;
	d3d_light.dvPhi                                                             = HALFPI;
	d3d_light.dvFalloff                                                         = 1;
	d3d_light.dvDirection.z                                                     = 1;
	setRange(1000);
}

gxLight::~gxLight() {}

void gxLight::setRange(float r)
{
	d3d_light.dvAttenuation1 = 1.0f / r;
}

void gxLight::setPosition(const float pos[3])
{
	d3d_light.dvPosition.x = pos[0];
	d3d_light.dvPosition.y = pos[1];
	d3d_light.dvPosition.z = pos[2];
}

void gxLight::setDirection(const float dir[3])
{
	d3d_light.dvDirection.x = dir[0];
	d3d_light.dvDirection.y = dir[1];
	d3d_light.dvDirection.z = dir[2];
}

void gxLight::setConeAngles(float inner, float outer)
{
	d3d_light.dvTheta = inner;
	d3d_light.dvPhi   = outer;
}