diff options
author | Juan Linietsky <reduzio@gmail.com> | 2014-02-09 22:10:30 -0300 |
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committer | Juan Linietsky <reduzio@gmail.com> | 2014-02-09 22:10:30 -0300 |
commit | 0b806ee0fc9097fa7bda7ac0109191c9c5e0a1ac (patch) | |
tree | 276c4d099e178eb67fbd14f61d77b05e3808e9e3 /scene/3d/light.cpp | |
parent | 0e49da1687bc8192ed210947da52c9e5c5f301bb (diff) |
GODOT IS OPEN SOURCE
Diffstat (limited to 'scene/3d/light.cpp')
-rw-r--r-- | scene/3d/light.cpp | 585 |
1 files changed, 585 insertions, 0 deletions
diff --git a/scene/3d/light.cpp b/scene/3d/light.cpp new file mode 100644 index 0000000000..94c56850ef --- /dev/null +++ b/scene/3d/light.cpp @@ -0,0 +1,585 @@ +/*************************************************************************/ +/* light.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* http://www.godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ +#include "light.h" + +#include "globals.h" +#include "scene/resources/surface_tool.h" + + +static const char* _light_param_names[VS::LIGHT_PARAM_MAX]={ + "params/spot_attenuation", + "params/spot_angle", + "params/radius", + "params/energy", + "params/attenuation", + "shadow/darkening", + "shadow/z_offset", + "shadow/z_slope_scale" +}; + +void Light::set_parameter(Parameter p_param, float p_value) { + + ERR_FAIL_INDEX(p_param, PARAM_MAX); + vars[p_param]=p_value; + VisualServer::get_singleton()->light_set_param(light,(VisualServer::LightParam)p_param,p_value); + if (p_param==PARAM_RADIUS || p_param==PARAM_SPOT_ANGLE) + update_gizmo(); + _change_notify(_light_param_names[p_param]); +// _change_notify(_param_names[p_param]); +} + +float Light::get_parameter(Parameter p_param) const { + + ERR_FAIL_INDEX_V(p_param, PARAM_MAX, 0); + return vars[p_param]; + +} + +void Light::set_color(LightColor p_color, const Color& p_value) { + + ERR_FAIL_INDEX(p_color, 3); + colors[p_color]=p_value; + VisualServer::get_singleton()->light_set_color(light,(VisualServer::LightColor)p_color,p_value); + //_change_notify(_color_names[p_color]); + +} +Color Light::get_color(LightColor p_color) const { + + ERR_FAIL_INDEX_V(p_color, 3, Color()); + return colors[p_color]; + +} + + +void Light::set_project_shadows(bool p_enabled) { + + shadows=p_enabled; + VisualServer::get_singleton()->light_set_shadow(light, p_enabled); + _change_notify("shadow"); +} +bool Light::has_project_shadows() const { + + return shadows; +} + +void Light::set_projector(const Ref<Texture>& p_projector) { + + projector=p_projector; + VisualServer::get_singleton()->light_set_projector(light, projector.is_null()?RID():projector->get_rid()); +} + +Ref<Texture> Light::get_projector() const { + + return projector; +} + + +bool Light::_can_gizmo_scale() const { + + return false; +} + + +static void _make_sphere(int p_lats, int p_lons, float p_radius, Ref<SurfaceTool> p_tool) { + + + p_tool->begin(Mesh::PRIMITIVE_TRIANGLES); + + for(int i = 1; i <= p_lats; i++) { + double lat0 = Math_PI * (-0.5 + (double) (i - 1) / p_lats); + double z0 = Math::sin(lat0); + double zr0 = Math::cos(lat0); + + double lat1 = Math_PI * (-0.5 + (double) i / p_lats); + double z1 = Math::sin(lat1); + double zr1 = Math::cos(lat1); + + for(int j = p_lons; j >= 1; j--) { + + double lng0 = 2 * Math_PI * (double) (j - 1) / p_lons; + double x0 = Math::cos(lng0); + double y0 = Math::sin(lng0); + + double lng1 = 2 * Math_PI * (double) (j) / p_lons; + double x1 = Math::cos(lng1); + double y1 = Math::sin(lng1); + + + Vector3 v[4]={ + Vector3(x1 * zr0, z0, y1 *zr0), + Vector3(x1 * zr1, z1, y1 *zr1), + Vector3(x0 * zr1, z1, y0 *zr1), + Vector3(x0 * zr0, z0, y0 *zr0) + }; + +#define ADD_POINT(m_idx) \ + p_tool->add_normal(v[m_idx]);\ + p_tool->add_vertex(v[m_idx]*p_radius); + + ADD_POINT(0); + ADD_POINT(1); + ADD_POINT(2); + + ADD_POINT(2); + ADD_POINT(3); + ADD_POINT(0); + } + } + +} + +RES Light::_get_gizmo_geometry() const { + + + Ref<FixedMaterial> mat_area( memnew( FixedMaterial )); + + mat_area->set_parameter( FixedMaterial::PARAM_DIFFUSE,Color(0.7,0.6,0.0,0.05) ); + mat_area->set_parameter( FixedMaterial::PARAM_EMISSION,Color(0.7,0.7,0.7) ); + mat_area->set_blend_mode( Material::BLEND_MODE_ADD ); + mat_area->set_flag(Material::FLAG_DOUBLE_SIDED,true); + mat_area->set_hint(Material::HINT_NO_DEPTH_DRAW,true); + + Ref<FixedMaterial> mat_light( memnew( FixedMaterial )); + + mat_light->set_parameter( FixedMaterial::PARAM_DIFFUSE, Color(1.0,1.0,0.8,0.9) ); + mat_light->set_flag(Material::FLAG_UNSHADED,true); + + Ref< Mesh > mesh; + + Ref<SurfaceTool> surftool( memnew( SurfaceTool )); + + switch(type) { + + case VisualServer::LIGHT_DIRECTIONAL: { + + + mat_area->set_parameter( FixedMaterial::PARAM_DIFFUSE,Color(0.9,0.8,0.1,0.8) ); + mat_area->set_blend_mode( Material::BLEND_MODE_MIX); + mat_area->set_flag(Material::FLAG_DOUBLE_SIDED,false); + mat_area->set_flag(Material::FLAG_UNSHADED,true); + + _make_sphere( 5,5,0.6, surftool ); + surftool->set_material(mat_light); + mesh=surftool->commit(mesh); + + // float radius=1; + + surftool->begin(Mesh::PRIMITIVE_TRIANGLES); + + const int arrow_points=5; + Vector3 arrow[arrow_points]={ + Vector3(0,0,2), + Vector3(1,1,2), + Vector3(1,1,-1), + Vector3(2,2,-1), + Vector3(0,0,-3) + }; + + int arrow_sides=4; + + + for(int i = 0; i < arrow_sides ; i++) { + + + Matrix3 ma(Vector3(0,0,1),Math_PI*2*float(i)/arrow_sides); + Matrix3 mb(Vector3(0,0,1),Math_PI*2*float(i+1)/arrow_sides); + + + for(int j=0;j<arrow_points-1;j++) { + + Vector3 points[4]={ + ma.xform(arrow[j]), + mb.xform(arrow[j]), + mb.xform(arrow[j+1]), + ma.xform(arrow[j+1]), + }; + + Vector3 n = Plane(points[0],points[1],points[2]).normal; + + surftool->add_normal(n); + surftool->add_vertex(points[0]); + surftool->add_normal(n); + surftool->add_vertex(points[1]); + surftool->add_normal(n); + surftool->add_vertex(points[2]); + + surftool->add_normal(n); + surftool->add_vertex(points[0]); + surftool->add_normal(n); + surftool->add_vertex(points[2]); + surftool->add_normal(n); + surftool->add_vertex(points[3]); + + + } + + + } + + surftool->set_material(mat_area); + mesh=surftool->commit(mesh); + + + + } break; + case VisualServer::LIGHT_OMNI: { + + + _make_sphere( 20,20,vars[PARAM_RADIUS], surftool ); + surftool->set_material(mat_area); + mesh=surftool->commit(mesh); + _make_sphere(5,5, 0.1, surftool ); + surftool->set_material(mat_light); + mesh=surftool->commit(mesh); + } break; + + case VisualServer::LIGHT_SPOT: { + + _make_sphere( 5,5,0.1, surftool ); + surftool->set_material(mat_light); + mesh=surftool->commit(mesh); + + // make cone + int points=24; + float len=vars[PARAM_RADIUS]; + float size=Math::tan(Math::deg2rad(vars[PARAM_SPOT_ANGLE]))*len; + + surftool->begin(Mesh::PRIMITIVE_TRIANGLES); + + for(int i = 0; i < points; i++) { + + float x0=Math::sin(i * Math_PI * 2 / points); + float y0=Math::cos(i * Math_PI * 2 / points); + float x1=Math::sin((i+1) * Math_PI * 2 / points); + float y1=Math::cos((i+1) * Math_PI * 2 / points); + + Vector3 v1=Vector3(x0*size,y0*size,-len).normalized()*len; + Vector3 v2=Vector3(x1*size,y1*size,-len).normalized()*len; + + Vector3 v3=Vector3(0,0,0); + Vector3 v4=Vector3(0,0,v1.z); + + Vector3 n = Plane(v1,v2,v3).normal; + + + surftool->add_normal(n); + surftool->add_vertex(v1); + surftool->add_normal(n); + surftool->add_vertex(v2); + surftool->add_normal(n); + surftool->add_vertex(v3); + + n=Vector3(0,0,-1); + + surftool->add_normal(n); + surftool->add_vertex(v1); + surftool->add_normal(n); + surftool->add_vertex(v2); + surftool->add_normal(n); + surftool->add_vertex(v4); + + + } + + surftool->set_material(mat_area); + mesh=surftool->commit(mesh); + + + } break; + } + + return mesh; +} + + +AABB Light::get_aabb() const { + + if (type==VisualServer::LIGHT_DIRECTIONAL) { + + return AABB( Vector3(-1,-1,-1), Vector3(2, 2, 2 ) ); + + } else if (type==VisualServer::LIGHT_OMNI) { + + return AABB( Vector3(-1,-1,-1) * vars[PARAM_RADIUS], Vector3(2, 2, 2 ) * vars[PARAM_RADIUS]); + + } else if (type==VisualServer::LIGHT_SPOT) { + + float len=vars[PARAM_RADIUS]; + float size=Math::tan(Math::deg2rad(vars[PARAM_SPOT_ANGLE]))*len; + return AABB( Vector3( -size,-size,-len ), Vector3( size*2, size*2, len ) ); + } + + return AABB(); +} + +DVector<Face3> Light::get_faces(uint32_t p_usage_flags) const { + + return DVector<Face3>(); +} + + +void Light::set_operator(Operator p_op) { + ERR_FAIL_INDEX(p_op,2); + op=p_op; + VisualServer::get_singleton()->light_set_operator(light,VS::LightOp(op)); + +} + +Light::Operator Light::get_operator() const { + + return op; +} + +void Light::approximate_opengl_attenuation(float p_constant, float p_linear, float p_quadratic,float p_radius_treshold) { + + //this is horrible and must never be used + + float a = p_quadratic * p_radius_treshold; + float b = p_linear * p_radius_treshold; + float c = p_constant * p_radius_treshold -1; + + float radius=10000; + + if(a == 0) { // solve linear + float d = Math::abs(-c/b); + if(d<radius) + radius=d; + + + } else { // solve quadratic + // now ad^2 + bd + c = 0, solve quadratic equation: + + float denominator = 2*a; + + if(denominator != 0) { + + + float root = b*b - 4*a*c; + + if(root >=0) { + + root = sqrt(root); + + float solution1 = fabs( (-b + root) / denominator); + float solution2 = fabs( (-b - root) / denominator); + + if(solution1 > radius) + solution1 = radius; + + if(solution2 > radius) + solution2 = radius; + + radius = (solution1 > solution2 ? solution1 : solution2); + } + } + } + + float energy=1.0; + + if (p_constant>0) + energy=1.0/p_constant; //energy is this + else + energy=8.0; // some high number.. + + + if (radius==10000) + radius=100; //bug? + + set_parameter(PARAM_RADIUS,radius); + set_parameter(PARAM_ENERGY,energy); + +} + +void Light::_bind_methods() { + + ObjectTypeDB::bind_method(_MD("set_parameter","variable","value"), &Light::set_parameter ); + ObjectTypeDB::bind_method(_MD("get_parameter"), &Light::get_parameter ); + ObjectTypeDB::bind_method(_MD("set_color","color","value"), &Light::set_color ); + ObjectTypeDB::bind_method(_MD("get_color"), &Light::get_color ); + ObjectTypeDB::bind_method(_MD("set_project_shadows","enable"), &Light::set_project_shadows ); + ObjectTypeDB::bind_method(_MD("has_project_shadows"), &Light::has_project_shadows ); + ObjectTypeDB::bind_method(_MD("set_projector","projector:Texture"), &Light::set_projector ); + ObjectTypeDB::bind_method(_MD("get_projector:Texture"), &Light::get_projector ); + ObjectTypeDB::bind_method(_MD("set_operator","operator"), &Light::set_operator ); + ObjectTypeDB::bind_method(_MD("get_operator"), &Light::get_operator ); + + + ADD_PROPERTYI( PropertyInfo( Variant::REAL, "params/energy", PROPERTY_HINT_EXP_RANGE, "0,64,0.01"), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_ENERGY ); + /* + if (type == VisualServer::LIGHT_OMNI || type == VisualServer::LIGHT_SPOT) { + ADD_PROPERTY( PropertyInfo( Variant::REAL, "params/radius", PROPERTY_HINT_RANGE, "0.01,4096,0.01")); + ADD_PROPERTY( PropertyInfo( Variant::REAL, "params/attenuation", PROPERTY_HINT_RANGE, "0,8,0.01")); + } + + if (type == VisualServer::LIGHT_SPOT) { + ADD_PROPERTY( PropertyInfo( Variant::REAL, "params/spot_angle", PROPERTY_HINT_RANGE, "0.01,90.0,0.01")); + ADD_PROPERTY( PropertyInfo( Variant::REAL, "params/spot_attenuation", PROPERTY_HINT_RANGE, "0,8,0.01")); + + }*/ + + ADD_PROPERTYI( PropertyInfo( Variant::COLOR, "colors/ambient"), _SCS("set_color"), _SCS("get_color"),COLOR_AMBIENT); + ADD_PROPERTYI( PropertyInfo( Variant::COLOR, "colors/diffuse"), _SCS("set_color"), _SCS("get_color"),COLOR_DIFFUSE); + ADD_PROPERTYI( PropertyInfo( Variant::COLOR, "colors/specular"), _SCS("set_color"), _SCS("get_color"),COLOR_SPECULAR); + ADD_PROPERTY( PropertyInfo( Variant::BOOL, "shadow/shadow"), _SCS("set_project_shadows"), _SCS("has_project_shadows")); + ADD_PROPERTYI( PropertyInfo( Variant::REAL, "shadow/darkening", PROPERTY_HINT_RANGE, "0,64,0.01"), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_SHADOW_DARKENING ); + ADD_PROPERTYI( PropertyInfo( Variant::REAL, "shadow/z_offset", PROPERTY_HINT_RANGE, "0,128,0.001"), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_SHADOW_Z_OFFSET); + ADD_PROPERTYI( PropertyInfo( Variant::REAL, "shadow/z_slope_scale", PROPERTY_HINT_RANGE, "0,128,0.001"), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_SHADOW_Z_SLOPE_SCALE); + ADD_PROPERTY( PropertyInfo( Variant::OBJECT, "projector",PROPERTY_HINT_RESOURCE_TYPE,"Texture"), _SCS("set_projector"), _SCS("get_projector")); + ADD_PROPERTY( PropertyInfo( Variant::INT, "operator",PROPERTY_HINT_ENUM,"Add,Sub"), _SCS("set_operator"), _SCS("get_operator")); + + + BIND_CONSTANT( PARAM_RADIUS ); + BIND_CONSTANT( PARAM_ENERGY ); + BIND_CONSTANT( PARAM_ATTENUATION ); + BIND_CONSTANT( PARAM_SPOT_ANGLE ); + BIND_CONSTANT( PARAM_SPOT_ATTENUATION ); + BIND_CONSTANT( PARAM_SHADOW_DARKENING ); + BIND_CONSTANT( PARAM_SHADOW_Z_OFFSET ); + + BIND_CONSTANT( COLOR_AMBIENT ); + BIND_CONSTANT( COLOR_DIFFUSE ); + BIND_CONSTANT( COLOR_SPECULAR ); + +} + + +Light::Light(VisualServer::LightType p_type) { + + type=p_type; + light=VisualServer::get_singleton()->light_create(p_type); + + set_parameter(PARAM_SPOT_ATTENUATION,1.0); + set_parameter(PARAM_SPOT_ANGLE,30.0); + set_parameter(PARAM_RADIUS,2.0); + set_parameter(PARAM_ENERGY,1.0); + set_parameter(PARAM_ATTENUATION,1.0); + set_parameter(PARAM_SHADOW_DARKENING,0.0); + set_parameter(PARAM_SHADOW_Z_OFFSET,0.05); + set_parameter(PARAM_SHADOW_Z_SLOPE_SCALE,0); + + set_color( COLOR_AMBIENT, Color(0,0,0)); + set_color( COLOR_DIFFUSE, Color(1,1,1)); + set_color( COLOR_SPECULAR, Color(1,1,1)); + + op=OPERATOR_ADD; + set_project_shadows( false ); + set_base(light); + +} + + +Light::Light() { + + type=VisualServer::LIGHT_DIRECTIONAL; + ERR_PRINT("Light shouldn't be instanced dircetly, use the subtypes."); +} + + +Light::~Light() { + + if (light.is_valid()) + VisualServer::get_singleton()->free(light); +} +///////////////////////////////////////// + + +void DirectionalLight::set_shadow_mode(ShadowMode p_mode) { + + shadow_mode=p_mode; + VS::get_singleton()->light_directional_set_shadow_mode(light,(VS::LightDirectionalShadowMode)p_mode); + +} + +DirectionalLight::ShadowMode DirectionalLight::get_shadow_mode() const{ + + return shadow_mode; +} + +void DirectionalLight::set_shadow_param(ShadowParam p_param, float p_value) { + + ERR_FAIL_INDEX(p_param,3); + shadow_param[p_param]=p_value; + VS::get_singleton()->light_directional_set_shadow_param(light,VS::LightDirectionalShadowParam(p_param),p_value); +} + +float DirectionalLight::get_shadow_param(ShadowParam p_param) const { + ERR_FAIL_INDEX_V(p_param,3,0); + return shadow_param[p_param]; +} + +void DirectionalLight::_bind_methods() { + + ObjectTypeDB::bind_method(_MD("set_shadow_mode","mode"),&DirectionalLight::set_shadow_mode); + ObjectTypeDB::bind_method(_MD("get_shadow_mode"),&DirectionalLight::get_shadow_mode); + ObjectTypeDB::bind_method(_MD("set_shadow_param","param","value"),&DirectionalLight::set_shadow_param); + ObjectTypeDB::bind_method(_MD("get_shadow_param","param"),&DirectionalLight::get_shadow_param); + + ADD_PROPERTY( PropertyInfo(Variant::INT,"shadow/mode",PROPERTY_HINT_ENUM,"Orthogonal,Perspective,PSSM"),_SCS("set_shadow_mode"),_SCS("get_shadow_mode")); + ADD_PROPERTYI( PropertyInfo(Variant::REAL,"shadow/max_distance",PROPERTY_HINT_EXP_RANGE,"0.00,99999,0.01"),_SCS("set_shadow_param"),_SCS("get_shadow_param"), SHADOW_PARAM_MAX_DISTANCE); + ADD_PROPERTYI( PropertyInfo(Variant::REAL,"shadow/split_weight",PROPERTY_HINT_RANGE,"0.01,1.0,0.01"),_SCS("set_shadow_param"),_SCS("get_shadow_param"), SHADOW_PARAM_PSSM_SPLIT_WEIGHT); + ADD_PROPERTYI( PropertyInfo(Variant::REAL,"shadow/zoffset_scale",PROPERTY_HINT_RANGE,"0.01,1024.0,0.01"),_SCS("set_shadow_param"),_SCS("get_shadow_param"), SHADOW_PARAM_PSSM_ZOFFSET_SCALE); + + BIND_CONSTANT( SHADOW_ORTHOGONAL ); + BIND_CONSTANT( SHADOW_PERSPECTIVE ); + BIND_CONSTANT( SHADOW_PARALLEL_SPLIT ); + BIND_CONSTANT( SHADOW_PARAM_MAX_DISTANCE ); + BIND_CONSTANT( SHADOW_PARAM_PSSM_SPLIT_WEIGHT ); + BIND_CONSTANT( SHADOW_PARAM_PSSM_ZOFFSET_SCALE ); + +} + + +DirectionalLight::DirectionalLight() : Light( VisualServer::LIGHT_DIRECTIONAL ) { + + shadow_mode=SHADOW_ORTHOGONAL; + shadow_param[SHADOW_PARAM_MAX_DISTANCE]=0; + shadow_param[SHADOW_PARAM_PSSM_SPLIT_WEIGHT]=0.5; + shadow_param[SHADOW_PARAM_PSSM_ZOFFSET_SCALE]=2.0; + +} + + +void OmniLight::_bind_methods() { + + ADD_PROPERTYI( PropertyInfo( Variant::REAL, "params/radius", PROPERTY_HINT_EXP_RANGE, "0.2,4096,0.01"), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_RADIUS ); + ADD_PROPERTYI( PropertyInfo( Variant::REAL, "params/attenuation", PROPERTY_HINT_EXP_EASING, "attenuation"), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_ATTENUATION ); + +} + +void SpotLight::_bind_methods() { + + ADD_PROPERTYI( PropertyInfo( Variant::REAL, "params/radius", PROPERTY_HINT_EXP_RANGE, "0.2,4096,0.01"), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_RADIUS ); + ADD_PROPERTYI( PropertyInfo( Variant::REAL, "params/attenuation", PROPERTY_HINT_EXP_EASING, "attenuation"), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_ATTENUATION ); + + ADD_PROPERTYI( PropertyInfo( Variant::REAL, "params/spot_angle", PROPERTY_HINT_RANGE, "0.01,89.9,0.01"), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_SPOT_ANGLE ); + ADD_PROPERTYI( PropertyInfo( Variant::REAL, "params/spot_attenuation", PROPERTY_HINT_EXP_EASING, "attenuation"), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_ATTENUATION ); + +} + + |