2 * Copyright (c) 2017 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
20 #include "wireframe-visual.h"
23 #include <dali-toolkit/public-api/visuals/visual-properties.h>
24 #include <dali-toolkit/internal/visuals/visual-factory-impl.h>
25 #include <dali-toolkit/internal/visuals/visual-factory-cache.h>
26 #include <dali-toolkit/internal/visuals/visual-string-constants.h>
27 #include <dali-toolkit/internal/visuals/visual-base-data-impl.h>
40 const char * const POSITION_ATTRIBUTE_NAME("aPosition");
41 const char * const INDEX_NAME("indices");
43 const char* VERTEX_SHADER = DALI_COMPOSE_SHADER(
44 attribute mediump vec2 aPosition;\n
45 uniform mediump mat4 uMvpMatrix;\n
46 uniform mediump vec3 uSize;\n
49 //Visual size and offset
50 uniform mediump vec2 offset;\n
51 uniform mediump vec2 size;\n
52 uniform mediump vec4 offsetSizeMode;\n
53 uniform mediump vec2 origin;\n
54 uniform mediump vec2 anchorPoint;\n
56 vec4 ComputeVertexPosition()\n
58 vec2 visualSize = mix(uSize.xy*size, size, offsetSizeMode.zw );\n
59 vec2 visualOffset = mix( offset, offset/uSize.xy, offsetSizeMode.xy);\n
60 return vec4( (aPosition + anchorPoint)*visualSize + (visualOffset + origin)*uSize.xy, 0.0, 1.0 );\n
65 gl_Position = uMvpMatrix * ComputeVertexPosition();\n
69 const char* FRAGMENT_SHADER = DALI_COMPOSE_SHADER(\n
70 uniform lowp vec4 uColor;\n
71 uniform lowp vec3 mixColor;\n
72 uniform lowp float opacity;\n
76 gl_FragColor = uColor * vec4( mixColor, opacity );\n
82 WireframeVisualPtr WireframeVisual::New( VisualFactoryCache& factoryCache, const Property::Map& properties )
84 Visual::BasePtr emtptyVisual;
86 return New(factoryCache, emtptyVisual, properties);
89 WireframeVisualPtr WireframeVisual::New( VisualFactoryCache& factoryCache, Visual::BasePtr actualVisual )
91 return new WireframeVisual( factoryCache, actualVisual );
94 WireframeVisualPtr WireframeVisual::New( VisualFactoryCache& factoryCache, Visual::BasePtr actualVisual, const Property::Map& properties )
96 WireframeVisualPtr wireframeVisual( new WireframeVisual( factoryCache, actualVisual ) );
98 // Instead of calling SetProperties, looking for the only valid property 'transform'
99 Property::Value* transformValue = properties.Find( Toolkit::Visual::Property::TRANSFORM, TRANSFORM );
100 Property::Map transformMap;
101 if( transformValue && transformValue->Get( transformMap ) )
103 wireframeVisual->SetTransformAndSize( transformMap, Vector2::ZERO );
106 return wireframeVisual;
109 WireframeVisual::WireframeVisual( VisualFactoryCache& factoryCache, Visual::BasePtr actualVisual )
110 : Visual::Base( factoryCache ),
111 mActualVisual( actualVisual )
115 WireframeVisual::~WireframeVisual()
119 float WireframeVisual::GetHeightForWidth( float width )
123 return mActualVisual->GetHeightForWidth( width );
127 return Visual::Base::GetHeightForWidth( width );
131 void WireframeVisual::GetNaturalSize( Vector2& naturalSize )
135 mActualVisual->GetNaturalSize( naturalSize );
139 Visual::Base::GetNaturalSize( naturalSize );
143 void WireframeVisual::DoCreatePropertyMap( Property::Map& map ) const
147 mActualVisual->CreatePropertyMap( map );
152 map.Insert( Toolkit::Visual::Property::TYPE, Toolkit::Visual::WIREFRAME );
156 void WireframeVisual::DoCreateInstancePropertyMap( Property::Map& map ) const
161 void WireframeVisual::DoSetProperties( const Property::Map& propertyMap )
163 Property::Value* mixValue = propertyMap.Find( Toolkit::Visual::Property::MIX_COLOR, MIX_COLOR );
167 mixValue->Get( mixColor );
168 SetMixColor( mixColor );
172 void WireframeVisual::DoSetOnStage( Actor& actor )
174 InitializeRenderer();
176 actor.AddRenderer( mImpl->mRenderer );
178 // Wireframe generated and ready to display
179 ResourceReady( Toolkit::Visual::ResourceStatus::READY );
182 void WireframeVisual::InitializeRenderer()
184 Shader shader = mFactoryCache.GetShader( VisualFactoryCache::WIREFRAME_SHADER );
187 shader = Shader::New( VERTEX_SHADER, FRAGMENT_SHADER );
188 mFactoryCache.SaveShader( VisualFactoryCache::WIREFRAME_SHADER, shader );
191 Geometry geometry = mFactoryCache.GetGeometry( VisualFactoryCache::WIREFRAME_GEOMETRY );
194 geometry = CreateQuadWireframeGeometry();
195 mFactoryCache.SaveGeometry( VisualFactoryCache::WIREFRAME_GEOMETRY, geometry );
198 //Create the renderer
199 mImpl->mRenderer = Renderer::New( geometry, shader);
201 //Register transform properties
202 mImpl->mTransform.RegisterUniforms( mImpl->mRenderer, Direction::LEFT_TO_RIGHT );
205 Geometry WireframeVisual::CreateQuadWireframeGeometry()
207 const float halfWidth = 0.5f;
208 const float halfHeight = 0.5f;
209 struct QuadVertex { Vector2 position;};
210 QuadVertex quadVertexData[4] =
212 { Vector2(-halfWidth, -halfHeight) },
213 { Vector2( halfWidth, -halfHeight) },
214 { Vector2( halfWidth, halfHeight) },
215 { Vector2(-halfWidth, halfHeight) }
218 Property::Map quadVertexFormat;
219 quadVertexFormat[POSITION_ATTRIBUTE_NAME] = Property::VECTOR2;
220 PropertyBuffer quadVertices = PropertyBuffer::New( quadVertexFormat );
221 quadVertices.SetData( quadVertexData, 4 );
224 unsigned short indexData[10] = { 0, 1, 1, 2, 2, 3, 3, 0 };
226 // Create the geometry object
227 Geometry geometry = Geometry::New();
228 geometry.AddVertexBuffer( quadVertices );
229 geometry.SetIndexBuffer( indexData, sizeof(indexData)/sizeof(indexData[0]) );
230 geometry.SetType( Geometry::LINES );
235 void WireframeVisual::OnSetTransform()
237 if( mImpl->mRenderer )
239 //Register transform properties
240 mImpl->mTransform.RegisterUniforms( mImpl->mRenderer, Direction::LEFT_TO_RIGHT );
244 } // namespace Internal
246 } // namespace Toolkit