IES Light

# Compatibility with Python 2.7.
from __future__ import print_function

# The directory containing the vray shared object should be present in the PYTHONPATH environment variable.
# Try to import the vray module from VRAY_SDK/python, if it is not in PYTHONPATH
import sys, os
VRAY_SDK = os.environ.get('VRAY_SDK')
if VRAY_SDK:
    sys.path.append(os.path.join(VRAY_SDK, 'python'))
import vray

SCENE_PATH = os.path.join(os.environ.get('VRAY_SDK'), 'scenes')
# Change process working directory to SCENE_PATH in order to be able to load relative scene resources.
os.chdir(SCENE_PATH)

# The renderer is automatically closed after the `with` block.
with vray.VRayRenderer() as renderer:
    # Register a simple log callback. Always useful for debugging.
    def dumpMsg(renderer, message, level, instant):
        if level == vray.LOGLEVEL_ERROR:
            print("[ERROR]", message)
        elif level == vray.LOGLEVEL_WARNING:
            print("[Warning]", message)
        elif level == vray.LOGLEVEL_INFO:
            print("[info]", message)
        # Uncomment for testing, but you might want to ignore these in real code
        #else: print("[debug]", message)
    renderer.setOnLogMessage(dumpMsg)
    # Load scene from a file.
    renderer.load(os.path.join(SCENE_PATH, 'lighting.vrscene'))
    # Remove original light source from the scene.
    del renderer.plugins["VRayLightDomeShape1"]
    # LightIES is a light source plugin that can be used to create physically accurate area lights 
    # from .IES files produced by metering real life light fixtures.
    # It also allows specifying a simple custom shape like a cylinder or box.
    light = renderer.classes.LightIES()
    # Specify the light position, rotation and scale.
    light.transform = vray.Transform(
        vray.Matrix(
            vray.Vector(0.9745879, 0.2240055, 0),
            vray.Vector(1.110223e-016, -4.440892e-016, -1),
            vray.Vector(-0.2240055, 0.9745879, -4.440892e-016)),
        vray.Vector(227.955764705938, 112.5306789507133, 112.2503672299417))
    # Specify the color of the light in RGB float values and alpha(1.0f)
    light.color = vray.AColor(0.712, 0.9335393, 1)
    # Specify the path to the .IES file to use for the light.
    light.ies_file = os.path.join(SCENE_PATH, 'assets', 'IES_Example_3.IES')
    # Multiplies the light color and intensity. (Can be used as an intensity control).
    light.filter_color = vray.Color(4, 4, 4)
    # Override the shape of the light.
    # Depending on the shape of the light some of the following properties have to be specified:
    #   ies_light_width - Light shape width in metres.
    #   ies_light_height - Light shape height in metres.
    #   ies_light_length - Light shape length in metres.
    #   ies_light_diameter - Light shape diameter in metres.
    # Possible values are:
    #  -1 (default shape from IES file) - default
    #   0 (Point)
    #   1 (Rectangular)
    #   2 (Circular)
    #   3 (Sphere)
    #   4 (Vertical Cylinder)
    #   5 (Horizontal cylinder oriented along lum.lenght)
    #   6 (Horizontal cylinder oriented along lum.width)
    #   7 (Ellipse oriented along lum.lenght)
    #   8 (Ellipse oriented along lum.width)
    light.ies_light_shape = 0
    # Specify shadow offset from the surface. Helps to prevent polygonal shadow artifacts on low-poly surfaces.
    light.shadowBias = 0.02
    # Specify that the bumped normal should be used to check if the light direction is below the surface.
    light.bumped_below_surface_check = True
    # Start rendering.
    renderer.startSync()
    # Wait for rendering to end.
    renderer.waitForRenderEnd()

#define VRAY_RUNTIME_LOAD_PRIMARY

#include "vraysdk.hpp"
#include "vrayplugins.hpp"
#include "utils.h"

using namespace VRay;
using namespace VRay::Plugins;
using namespace std;

const char *BASE_PATH = getenv("VRAY_SDK");
string SCENE_PATH = (BASE_PATH ? string(BASE_PATH) : string(".")) + PATH_DELIMITER + "scenes";

int main() {
	// Change process working directory to SCENE_PATH in order to be able to load relative scene resources.
	changeCurrentDir(SCENE_PATH.c_str());
	// Load V-Ray SDK library.
	VRayInit init(NULL, true);
	// Create an instance of VRayRenderer with default options.
	// The renderer is automatically closed at the end of the current scope.
	VRayRenderer renderer;
	// It's recommended to always have a console log
	renderer.setOnLogMessage(logMessage);
	// Load scene from a file.
	renderer.load("lighting.vrscene");
	// Remove original light source from the scene.
	renderer.deletePlugin("VRayLightDomeShape1");
	// LightIES is a light source plugin that can be used to create physically accurate area lights 
	// from .IES files produced by metering real life light fixtures.
	// It also allows specifying a simple custom shape like a cylinder or box.
	LightIES light = renderer.newPlugin<LightIES>();
	// Specify the light position, rotation and scale.
	light.set_transform(Transform(
		Matrix(
			Vector(0.9745879, 0.2240055, 0.0),
			Vector(1.110223e-016, -4.440892e-016, -1.0),
			Vector(-0.2240055, 0.9745879, -4.440892e-016)),
		Vector(227.955764705938, 112.5306789507133, 112.2503672299417)));
	// Specify the color of the light in RGB float values and alpha(1.0f)
	light.set_color(AColor(0.712, 0.9335393, 1.0));
	// Specify the path to the .IES file to use for the light.
	light.set_ies_file("assets/IES_Example_3.IES");
	// Multiplies the light color and intensity. (Can be used as an intensity control).
	light.set_filter_color(Color(4.0, 4.0, 4.0));
	// Override the shape of the light.
	// Depending on the shape of the light some of the following properties have to be specified :
	//   ies_light_width - Light shape width in metres.
	//   ies_light_height - Light shape height in metres.
	//   ies_light_length - Light shape length in metres.
	//   ies_light_diameter - Light shape diameter in metres.
	// Possible values are :
	//  -1 (default shape from .IES file) - default
	//   0 (Point)
	//   1 (Rectangular)
	//   2 (Circular)
	//   3 (Sphere)
	//   4 (Vertical Cylinder)
	//   5 (Horizontal cylinder oriented along lum.lenght)
	//   6 (Horizontal cylinder oriented along lum.width)
	//   7 (Ellipse oriented along lum.lenght)
	//   8 (Ellipse oriented along lum.width)
	light.set_ies_light_shape(0);
	// Specify shadow offset from the surface. Helps to prevent polygonal shadow artifacts on low-poly surfaces.
	light.set_shadowBias(0.02f);
	// Specify that the bumped normal should be used to check if the light direction is below the surface.
	light.set_bumped_below_surface_check(true);
	// Start rendering.
	renderer.startSync();
	// Wait for rendering to end.
	renderer.waitForRenderEnd();
	return 0;
}

using System;
using System.IO;
using VRay;
using VRay.Plugins;

namespace _05_ies
{
    class Program
    {
        static void Main(string[] args)
        {
            string SCENE_PATH = Path.Combine(Environment.GetEnvironmentVariable("VRAY_SDK"), "scenes");
            // Change process working directory to SCENE_PATH in order to be able to load relative scene resources.
            Directory.SetCurrentDirectory(SCENE_PATH);

            // Create an instance of VRayRenderer with default options. The renderer is automatically closed after the `using` block.
			using (VRayRenderer renderer = new VRayRenderer())
            {
                // Add a listener for any type of log message.
                renderer.LogMessage += new EventHandler<MessageEventArgs>((source, e) =>
                {
                    // You can remove the if for testing, but you might want to ignore Debug in real code
                    if (e.LogLevel != LogLevelType.Debug)
                    {
                        Console.WriteLine(String.Format("[{0}] {1}", e.LogLevel.ToString(), e.Message));
                    }
                });
                // Load scene from a file.
                renderer.Load("lighting.vrscene");
                // Remove original light source from the scene.
                renderer.DeletePlugin("VRayLightDomeShape1");
                // LightIES is a light source plugin that can be used to create physically accurate area lights 
                // from .IES files produced by metering real life light fixtures.
                // It also allows specifying a simple custom shape like a cylinder or box.
                LightIES light = renderer.NewPlugin<LightIES>();
                // Specify the light position, rotation and scale.
                light.Transform = new Transform(
                    new Matrix(
                        new Vector(0.9745879, 0.2240055, 0),
                        new Vector(1.110223e-016, -4.440892e-016, -1),
                        new Vector(-0.2240055, 0.9745879, -4.440892e-016)),
                    new Vector(227.955764705938, 112.5306789507133, 112.2503672299417));
                // Specify the color of the light in RGB float values and alpha = 1.
                light.Color = new AColor(0.712, 0.9335393, 1);
                // Specify the path to the .IES file to use for the light.
                light.IesFile = Path.Combine("assets", "IES_Example_3.IES");
                // Multiplies the light color and intensity. (Can be used as an intensity control).
                light.FilterColor = new Color(4, 4, 4);
                // Override the shape of the light.
                // Depending on the shape of the light some of the following properties have to be specified:
                //   ies_light_width - Light shape width in metres.
                //   ies_light_height - Light shape height in metres.
                //   ies_light_length - Light shape length in metres.
                //   ies_light_diameter - Light shape diameter in metres.
                // Possible values are:
                //  -1 (default shape from IES file) - default
                //   0 (Point)
                //   1 (Rectangular)
                //   2 (Circular)
                //   3 (Sphere)
                //   4 (Vertical Cylinder)
                //   5 (Horizontal cylinder oriented along lum.lenght)
                //   6 (Horizontal cylinder oriented along lum.width)
                //   7 (Ellipse oriented along lum.lenght)
                //   8 (Ellipse oriented along lum.width)
                light.IesLightShape = 0;
                // Specify shadow offset from the surface. Helps to prevent polygonal shadow artifacts on low-poly surfaces.
                light.ShadowBias = 0.02F;
                // Specify that the bumped normal should be used to check if the light direction is below the surface.
                light.BumpedBelowSurfaceCheck = true;
                // Specify the number of parameter samples for motion blur.
                light.Nsamples = 1;
                // Start rendering.
                renderer.StartSync();
                // Wait for rendering to end.
                renderer.WaitForRenderEnd();
            }
        }
    }
}

var path = require('path');
var vray = require(path.join(process.env.VRAY_SDK, 'node', 'vray'));

var SCENE_PATH = path.join(process.env.VRAY_SDK, 'scenes');
// Change process working directory to SCENE_PATH in order to be able to load relative scene resources.
process.chdir(SCENE_PATH);

// Create an instance of VRayRenderer with default options.
var renderer = vray.VRayRenderer();
// It's recommended to always have a console log callback
renderer.on("logMessage", function(message, level, instant) {
	if (level == vray.LOGLEVEL_ERROR)
		console.log("[ERROR] ", message);
	else if (level == vray.LOGLEVEL_WARNING)
		console.log("[Warning] ", message);
	else if (level == vray.LOGLEVEL_INFO)
		console.log("[info] ", message);
	// Uncomment for testing, but you might want to ignore these in real code
	//else console.log("[debug] ", message);
});
// Load scene from a file asynchronously.
renderer.load("lighting.vrscene", function(err) {
    if (err) throw err;
    // Remove original light source from the scene.
    delete renderer.plugins["VRayLightDomeShape1"];
    // LightIES is a light source plugin that can be used to create physically accurate area lights
    // from .IES files produced by metering real life light fixtures.
    // It also allows specifying a simple custom shape like a cylinder or box.
    var light = renderer.classes.LightIES();
    // Specify the light position, rotation and scale.
    light.transform = vray.Transform(
        vray.Matrix(
            vray.Vector(0.9745879, 0.2240055, 0),
            vray.Vector(1.110223e-016, -4.440892e-016, -1),
            vray.Vector(-0.2240055, 0.9745879, -4.440892e-016)),
        vray.Vector(227.955764705938, 112.5306789507133, 112.2503672299417));
    // Specify the color of the light in RGB float values and alpha(1.0f)
    light.color = vray.AColor(0.712, 0.9335393, 1);
    // Specify the path to the .IES file to use for the light.
    light.ies_file = path.join(SCENE_PATH, 'assets', 'IES_Example_3.IES');
    // Multiplies the light color and intensity. (Can be used as an intensity control).
    light.filter_color = vray.Color(4, 4, 4);
    // Override the shape of the light.
    // Depending on the shape of the light some of the following properties have to be specified:
    //   ies_light_width - Light shape width in metres.
    //   ies_light_height - Light shape height in metres.
    //   ies_light_length - Light shape length in metres.
    //   ies_light_diameter - Light shape diameter in metres.
    // Possible values are:
    //  -1 (default shape from IES file) - default
    //   0 (Point)
    //   1 (Rectangular)
    //   2 (Circular)
    //   3 (Sphere)
    //   4 (Vertical Cylinder)
    //   5 (Horizontal cylinder oriented along lum.lenght)
    //   6 (Horizontal cylinder oriented along lum.width)
    //   7 (Ellipse oriented along lum.lenght)
    //   8 (Ellipse oriented along lum.width)
    light.ies_light_shape = 0;
    // Specify shadow offset from the surface. Helps to prevent polygonal shadow artifacts on low-poly surfaces.
    light.shadowBias = 0.02;
    // Specify that the bumped normal should be used to check if the light direction is below the surface.
    light.bumped_below_surface_check = true;
    // Start rendering.
    renderer.start(function(err) {
        if (err) throw err;
        // Wait for rendering to end.
        renderer.waitForRenderEnd(function() {
            renderer.close();
        });
    });
});