More implementations of Light

Introduced classes

class ParallelLight

gamnit :: ParallelLight

Sun-like light projecting parallel rays

All class definitions

class ParallelLight

gamnit $ ParallelLight

Sun-like light projecting parallel rays
package_diagram gamnit::more_lights more_lights gamnit::depth_core depth_core gamnit::more_lights->gamnit::depth_core gamnit::flat_core flat_core gamnit::depth_core->gamnit::flat_core ...gamnit::flat_core ... ...gamnit::flat_core->gamnit::flat_core gamnit::more_materials more_materials gamnit::more_materials->gamnit::more_lights gamnit::more_models more_models gamnit::more_models->gamnit::more_materials gamnit::selection selection gamnit::selection->gamnit::more_materials gamnit::more_models... ... gamnit::more_models...->gamnit::more_models gamnit::selection... ... gamnit::selection...->gamnit::selection


module abstract_collection

core :: abstract_collection

Abstract collection classes and services.
module abstract_text

core :: abstract_text

Abstract class for manipulation of sequences of characters
module angles

geometry :: angles

Angle related service using Float to represent an angle in radians
module app

app :: app

app.nit is a framework to create cross-platform applications
module app_base

app :: app_base

Base of the app.nit framework, defines App
module array

core :: array

This module introduces the standard array structure.
module assets

app :: assets

Portable services to load resources from the assets folder
module aware

android :: aware

Android compatibility module
module bitset

core :: bitset

Services to handle BitSet
module boxes

geometry :: boxes

Provides interfaces and classes to represent basic geometry needs.
module bytes

core :: bytes

Services for byte streams and arrays
module c

c :: c

Structures and services for compatibility with the C language
module caching

serialization :: caching

Services for caching serialization engines
module cameras

gamnit :: cameras

Camera services producing Model-View-Projection matrices
module cameras_cache

gamnit :: cameras_cache

Cache the Matrix produced by Camera::mvp_matrix
module circular_array

core :: circular_array

Efficient data structure to access both end of the sequence.
module codec_base

core :: codec_base

Base for codecs to use with streams
module codecs

core :: codecs

Group module for all codec-related manipulations
module collection

core :: collection

This module define several collection classes.
module core

core :: core

Standard classes and methods used by default by Nit programs and libraries.
module display

gamnit :: display

Abstract display services
module dynamic_resolution

gamnit :: dynamic_resolution

Virtual screen with a resolution independent from the real screen
module engine_tools

serialization :: engine_tools

Advanced services for serialization engines
module environ

core :: environ

Access to the environment variables of the process
module error

core :: error

Standard error-management infrastructure.
module exec

core :: exec

Invocation and management of operating system sub-processes.
module file

core :: file

File manipulations (create, read, write, etc.)
module fixed_ints

core :: fixed_ints

Basic integers of fixed-precision
module fixed_ints_text

core :: fixed_ints_text

Text services to complement fixed_ints
module flat

core :: flat

All the array-based text representations
module flat_core

gamnit :: flat_core

Core services for the flat API for 2D games
module gamnit

gamnit :: gamnit

Game and multimedia framework for Nit
module gc

core :: gc

Access to the Nit internal garbage collection mechanism
module geometry

geometry :: geometry

Provides interfaces and classes to represent basic geometry needs.
module glesv2

glesv2 :: glesv2

OpenGL graphics rendering library for embedded systems, version 2.0
module hash_collection

core :: hash_collection

Introduce HashMap and HashSet.
module input

mnit :: input

Defines abstract classes for user and general inputs to the application.
module inspect

serialization :: inspect

Refine Serializable::inspect to show more useful information
module iso8859_1

core :: iso8859_1

Codec for ISO8859-1 I/O
module kernel

core :: kernel

Most basic classes and methods.
module list

core :: list

This module handle double linked lists
module math

core :: math

Mathematical operations
module matrix

matrix :: matrix

Services for matrices of Float values
module meta

meta :: meta

Simple user-defined meta-level to manipulate types of instances as object.
module more_collections

more_collections :: more_collections

Highly specific, but useful, collections-related classes.
module native

core :: native

Native structures for text and bytes
module numeric

core :: numeric

Advanced services for Numeric types
module performance_analysis

performance_analysis :: performance_analysis

Services to gather information on the performance of events by categories
module points_and_lines

geometry :: points_and_lines

Interfaces and classes to represent basic geometry needs.
module poset

poset :: poset

Pre order sets and partial order set (ie hierarchies)
module programs

gamnit :: programs

Services for graphical programs with shaders, attributes and uniforms
module projection

matrix :: projection

Services on Matrix to transform and project 3D coordinates
module protocol

core :: protocol

module queue

core :: queue

Queuing data structures and wrappers
module range

core :: range

Module for range of discrete objects.
module re

core :: re

Regular expression support for all services based on Pattern
module realtime

realtime :: realtime

Services to keep time of the wall clock time
module ropes

core :: ropes

Tree-based representation of a String.
module serialization

serialization :: serialization

General serialization services
module serialization_core

serialization :: serialization_core

Abstract services to serialize Nit objects to different formats
module sorter

core :: sorter

This module contains classes used to compare things and sorts arrays.
module stream

core :: stream

Input and output streams of characters
module text

core :: text

All the classes and methods related to the manipulation of text entities
module textures

gamnit :: textures

Load textures, create subtextures and manage their life-cycle
module time

core :: time

Management of time and dates
module union_find

core :: union_find

union–find algorithm using an efficient disjoint-set data structure
module utf8

core :: utf8

Codec for UTF-8 I/O


module depth_core

gamnit :: depth_core

Base entities of the depth 3D game framework


module more_materials

gamnit :: more_materials

Various material implementations


module a_star-m


module cardboard

gamnit :: cardboard

Update the orientation of world_camera at each frame using the head position given by android::cardboard
module depth

gamnit :: depth

Framework for 3D games in Nit
module more_models

gamnit :: more_models

Services to load models from the assets folder
module selection

gamnit :: selection

Select Actor from a screen coordinate
module stereoscopic_view

gamnit :: stereoscopic_view

Refine EulerCamera and App::frame_core_draw to get a stereoscopic view
module vr

gamnit :: vr

VR support for gamnit depth, for Android only
# More implementations of `Light`
module more_lights

import depth_core
intrude import cameras_cache

#class PointLight
#class Spotlight

# Sun-like light projecting parallel rays
class ParallelLight
	super LightCastingShadows

	# Angle to the light source, around the X axis
	var pitch = 0.0 is writable

	# Angle to the light source, around the Y axis
	var yaw = 0.0 is writable

	# Depth texture width, in world coordinates
	var width = 100.0 is writable

	# Depth texture height, in world coordinates
	var height = 100.0 is writable

	# Viewport depth, centered on `app.world_camera`
	var depth = 500.0 is writable

	redef var camera = new ParallelLightCamera( null), self) is lazy

private class ParallelLightCamera
	super Camera

	var light: ParallelLight

	# Rotation matrix produced by the current rotation of the camera
	fun rotation_matrix: Matrix
		var view = new Matrix.identity(4)
		view.rotate(light.yaw,   0.0, 1.0, 0.0)
		view.rotate(light.pitch, 1.0, 0.0, 0.0)
		return view

	private fun create_mvp_matrix: Matrix
		var near = -light.depth/2.0
		var far = light.depth/2.0

		var view = new Matrix.identity(4)
		view.translate(-position.x, -position.y, -position.z)
		view = view * rotation_matrix
		var projection = new Matrix.orthogonal(-light.width/2.0, light.width/2.0,
		                                       -light.height/2.0, light.height/2.0,
		                                       near, far)
		return view * projection

	redef fun mvp_matrix
		var m = mvp_matrix_cache
		if m == null or check_position_changed then
			m = create_mvp_matrix
			mvp_matrix_cache = m
		return m

	private var pitch_cache = 0.0
	private var yaw_cache = 0.0
	private var width_cache = 0.0
	private var height_cache = 0.0
	private var depth_cache = 0.0

	redef fun check_position_changed
		if super then return true

		if light.pitch != pitch_cache or
		   light.yaw != yaw_cache or
		   light.width != width_cache or
		   light.height != height_cache or
		   light.depth != depth_cache then
			pitch_cache = light.pitch
			yaw_cache = light.yaw
			width_cache = light.width
			height_cache = light.height
			depth_cache = light.depth
			return true

		return false