/// <summary>
/// Sets the cone angles for the <see cref="PunctualLightType.Spot"/> light.
/// </summary>
/// <param name="light">This <see cref="PunctualLight"/> instance.</param>
/// <param name="innerConeAngle">
/// Gets the Angle, in radians, from centre of spotlight where falloff begins.
/// Must be greater than or equal to 0 and less than outerConeAngle.
/// </param>
/// <param name="outerConeAngle">
/// Gets Angle, in radians, from centre of spotlight where falloff ends.
/// Must be greater than innerConeAngle and less than or equal to PI / 2.0.
/// </param>
/// <returns>This <see cref="PunctualLight"/> instance.</returns>
public static PunctualLight WithSpotCone(this PunctualLight light, float innerConeAngle, float outerConeAngle)
{
Guard.NotNull(light, nameof(light));
light.SetSpotCone(innerConeAngle, outerConeAngle);
return(light);
}
/// <summary>
/// Defines the light color, intensity and range for the current <see cref="PunctualLight"/>.
/// </summary>
/// <param name="light">This <see cref="PunctualLight"/> instance.</param>
/// <param name="color">RGB value for light's color in linear space.</param>
/// <param name="intensity">
/// Brightness of light in. The units that this is defined in depend on the type of light.
/// point and spot lights use luminous intensity in candela (lm/sr) while directional
/// lights use illuminance in lux (lm/m2)
/// </param>
/// <param name="range">
/// Hint defining a distance cutoff at which the light's intensity may be considered
/// to have reached zero. Supported only for point and spot lights. Must be > 0.
/// When undefined, range is assumed to be infinite.
/// </param>
/// <returns>This <see cref="PunctualLight"/> instance.</returns>
public static PunctualLight WithColor(this PunctualLight light, Vector3 color, float intensity = 1, float range = 0)
{
light.Color = color;
light.Intensity = intensity;
light.Range = range;
return(light);
}
public PunctualLight CreateLight(string name, PunctualLightType ltype)
{
var light = new PunctualLight(ltype);
light.Name = name;
_lights.Add(light);
return(light);
}
/// <summary>
/// Defines the light color, intensity and range for the current <see cref="PunctualLight"/>.
/// </summary>
/// <param name="light">This <see cref="PunctualLight"/> instance.</param>
/// <param name="color">RGB value for light's color in linear space.</param>
/// <param name="intensity">
/// Brightness of light in. The units that this is defined in depend on the type of light.
/// point and spot lights use luminous intensity in candela (lm/sr) while directional
/// lights use illuminance in lux (lm/m2)
/// </param>
/// <param name="range">
/// Hint defining a distance cutoff at which the light's intensity may be considered
/// to have reached zero. Supported only for point and spot lights. Must be > 0.
/// When undefined, range is assumed to be infinite.
/// </param>
/// <returns>This <see cref="PunctualLight"/> instance.</returns>
public static PunctualLight WithColor(this PunctualLight light, Vector3 color, float intensity = 1, float range = float.PositiveInfinity)
{
Guard.NotNull(light, nameof(light));
light.Color = color;
light.Intensity = intensity;
light.Range = range;
return(light);
}
/// <summary>
/// Sets the cone angles for the <see cref="PunctualLightType.Spot"/> light.
/// </summary>
/// <param name="light">This <see cref="PunctualLight"/> instance.</param>
/// <param name="innerConeAngle">
/// Gets the Angle, in radians, from centre of spotlight where falloff begins.
/// Must be greater than or equal to 0 and less than outerConeAngle.
/// </param>
/// <param name="outerConeAngle">
/// Gets Angle, in radians, from centre of spotlight where falloff ends.
/// Must be greater than innerConeAngle and less than or equal to PI / 2.0.
/// </param>
/// <returns>This <see cref="PunctualLight"/> instance.</returns>
public static PunctualLight WithSpotCone(this PunctualLight light, float innerConeAngle, float outerConeAngle)
{
light.SetSpotCone(innerConeAngle, outerConeAngle);
return(light);
}