[692] | 1 | /*
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| 2 | -----------------------------------------------------------------------------
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| 3 | This source file is part of OGRE
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| 4 | (Object-oriented Graphics Rendering Engine)
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| 5 | For the latest info, see http://www.ogre3d.org/
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| 6 |
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| 7 | Copyright 2000-2005 The OGRE Team
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| 8 | Also see acknowledgements in Readme.html
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| 9 |
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| 10 | This program is free software; you can redistribute it and/or modify it under
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| 11 | the terms of the GNU Lesser General Public License as published by the Free Software
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| 12 | Foundation; either version 2 of the License, or (at your option) any later
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| 13 | version.
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| 14 |
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| 15 | This program is distributed in the hope that it will be useful, but WITHOUT
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| 16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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| 17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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| 18 |
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| 19 | You should have received a copy of the GNU Lesser General Public License along with
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| 20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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| 21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to
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| 22 | http://www.gnu.org/copyleft/lesser.txt.
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| 23 | -----------------------------------------------------------------------------
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| 24 | */
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| 25 | #include "OgreStableHeaders.h"
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| 26 |
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| 27 | #include "OgrePanelOverlayElement.h"
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| 28 | #include "OgreMaterial.h"
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| 29 | #include "OgreTechnique.h"
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| 30 | #include "OgrePass.h"
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| 31 | #include "OgreStringConverter.h"
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| 32 | #include "OgreHardwareBufferManager.h"
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| 33 | #include "OgreRoot.h"
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| 34 | #include "OgreRenderSystem.h"
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| 35 |
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| 36 | namespace Ogre {
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| 37 | //---------------------------------------------------------------------
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| 38 | String PanelOverlayElement::msTypeName = "Panel";
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| 39 | PanelOverlayElement::CmdTiling PanelOverlayElement::msCmdTiling;
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| 40 | PanelOverlayElement::CmdTransparent PanelOverlayElement::msCmdTransparent;
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| 41 | PanelOverlayElement::CmdUVCoords PanelOverlayElement::msCmdUVCoords;
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| 42 | //---------------------------------------------------------------------
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| 43 | // vertex buffer bindings, set at compile time (we could look these up but no point)
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| 44 | #define POSITION_BINDING 0
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| 45 | #define TEXCOORD_BINDING 1
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| 46 |
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| 47 | //---------------------------------------------------------------------
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| 48 | PanelOverlayElement::PanelOverlayElement(const String& name)
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| 49 | : OverlayContainer(name)
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| 50 | , mTransparent(false)
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| 51 | // Defer creation of texcoord buffer until we know how big it needs to be
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| 52 | , mNumTexCoordsInBuffer(0)
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| 53 | , mU1(0.0)
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| 54 | , mV1(0.0)
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| 55 | , mU2(1.0)
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| 56 | , mV2(1.0)
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| 57 |
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| 58 | {
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| 59 | // Init tiling
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| 60 | for (ushort i = 0; i < OGRE_MAX_TEXTURE_COORD_SETS; ++i)
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| 61 | {
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| 62 | mTileX[i] = 1.0f;
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| 63 | mTileY[i] = 1.0f;
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| 64 | }
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| 65 |
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| 66 | // No normals or colours
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| 67 | if (createParamDictionary("PanelOverlayElement"))
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| 68 | {
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| 69 | addBaseParameters();
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| 70 | }
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| 71 |
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| 72 | }
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| 73 | //---------------------------------------------------------------------
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| 74 | PanelOverlayElement::~PanelOverlayElement()
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| 75 | {
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| 76 | delete mRenderOp.vertexData;
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| 77 | }
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| 78 | //---------------------------------------------------------------------
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| 79 | void PanelOverlayElement::initialise(void)
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| 80 | {
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| 81 | bool init = !mInitialised;
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| 82 |
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| 83 | OverlayContainer::initialise();
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| 84 | if (init)
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| 85 | {
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| 86 | // Setup render op in advance
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| 87 | mRenderOp.vertexData = new VertexData();
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| 88 | // Vertex declaration: 1 position, add texcoords later depending on #layers
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| 89 | // Create as separate buffers so we can lock & discard separately
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| 90 | VertexDeclaration* decl = mRenderOp.vertexData->vertexDeclaration;
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| 91 | decl->addElement(POSITION_BINDING, 0, VET_FLOAT3, VES_POSITION);
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| 92 |
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| 93 | // Basic vertex data
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| 94 | mRenderOp.vertexData->vertexStart = 0;
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| 95 | mRenderOp.vertexData->vertexCount = 4;
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| 96 |
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| 97 | // Vertex buffer #1
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| 98 | HardwareVertexBufferSharedPtr vbuf =
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| 99 | HardwareBufferManager::getSingleton().createVertexBuffer(
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| 100 | decl->getVertexSize(POSITION_BINDING), mRenderOp.vertexData->vertexCount,
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| 101 | HardwareBuffer::HBU_STATIC_WRITE_ONLY// mostly static except during resizing
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| 102 | );
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| 103 | // Bind buffer
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| 104 | mRenderOp.vertexData->vertexBufferBinding->setBinding(POSITION_BINDING, vbuf);
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| 105 |
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| 106 | // No indexes & issue as a strip
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| 107 | mRenderOp.useIndexes = false;
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| 108 | mRenderOp.operationType = RenderOperation::OT_TRIANGLE_STRIP;
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| 109 |
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| 110 | mInitialised = true;
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| 111 | }
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| 112 | }
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| 113 | //---------------------------------------------------------------------
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| 114 | void PanelOverlayElement::setTiling(Real x, Real y, ushort layer)
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| 115 | {
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| 116 | assert (layer < OGRE_MAX_TEXTURE_COORD_SETS);
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| 117 | assert (x != 0 && y != 0);
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| 118 |
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| 119 | mTileX[layer] = x;
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| 120 | mTileY[layer] = y;
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| 121 |
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| 122 | mGeomUVsOutOfDate = true;
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| 123 |
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| 124 | }
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| 125 | //---------------------------------------------------------------------
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| 126 | Real PanelOverlayElement::getTileX(ushort layer) const
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| 127 | {
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| 128 | return mTileX[layer];
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| 129 | }
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| 130 | //---------------------------------------------------------------------
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| 131 | Real PanelOverlayElement::getTileY(ushort layer) const
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| 132 | {
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| 133 | return mTileY[layer];
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| 134 | }
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| 135 | //---------------------------------------------------------------------
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| 136 | void PanelOverlayElement::setTransparent(bool isTransparent)
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| 137 | {
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| 138 | mTransparent = isTransparent;
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| 139 | }
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| 140 | //---------------------------------------------------------------------
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| 141 | bool PanelOverlayElement::isTransparent(void) const
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| 142 | {
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| 143 | return mTransparent;
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| 144 | }
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| 145 | //---------------------------------------------------------------------
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| 146 | void PanelOverlayElement::setUV(Real u1, Real v1, Real u2, Real v2)
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| 147 | {
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| 148 | mU1 = u1;
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| 149 | mU2 = u2;
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| 150 | mV1 = v1;
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| 151 | mV2 = v2;
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| 152 | mGeomUVsOutOfDate = true;
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| 153 | }
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| 154 | void PanelOverlayElement::getUV(Real& u1, Real& v1, Real& u2, Real& v2) const
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| 155 | {
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| 156 | u1 = mU1;
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| 157 | u2 = mU2;
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| 158 | v1 = mV1;
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| 159 | v2 = mV2;
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| 160 | }
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| 161 | //---------------------------------------------------------------------
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| 162 | const String& PanelOverlayElement::getTypeName(void) const
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| 163 | {
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| 164 | return msTypeName;
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| 165 | }
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| 166 | //---------------------------------------------------------------------
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| 167 | void PanelOverlayElement::getRenderOperation(RenderOperation& op)
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| 168 | {
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| 169 | op = mRenderOp;
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| 170 | }
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| 171 | //---------------------------------------------------------------------
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| 172 | void PanelOverlayElement::setMaterialName(const String& matName)
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| 173 | {
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| 174 | OverlayContainer::setMaterialName(matName);
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| 175 | }
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| 176 | //---------------------------------------------------------------------
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| 177 | void PanelOverlayElement::_updateRenderQueue(RenderQueue* queue)
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| 178 | {
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| 179 | if (mVisible)
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| 180 | {
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| 181 |
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| 182 | if (!mTransparent && !mpMaterial.isNull())
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| 183 | {
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| 184 | OverlayElement::_updateRenderQueue(queue);
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| 185 | }
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| 186 |
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| 187 | // Also add children
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| 188 | ChildIterator it = getChildIterator();
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| 189 | while (it.hasMoreElements())
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| 190 | {
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| 191 | // Give children ZOrder 1 higher than this
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| 192 | it.getNext()->_updateRenderQueue(queue);
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| 193 | }
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| 194 | }
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| 195 | }
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| 196 | //---------------------------------------------------------------------
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| 197 | void PanelOverlayElement::updatePositionGeometry(void)
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| 198 | {
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| 199 | /*
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| 200 | 0-----2
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| 201 | | /|
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| 202 | | / |
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| 203 | |/ |
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| 204 | 1-----3
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| 205 | */
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| 206 | Real left, right, top, bottom;
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| 207 |
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| 208 | /* Convert positions into -1, 1 coordinate space (homogenous clip space).
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| 209 | - Left / right is simple range conversion
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| 210 | - Top / bottom also need inverting since y is upside down - this means
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| 211 | that top will end up greater than bottom and when computing texture
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| 212 | coordinates, we have to flip the v-axis (ie. subtract the value from
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| 213 | 1.0 to get the actual correct value).
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| 214 | */
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| 215 | left = _getDerivedLeft() * 2 - 1;
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| 216 | right = left + (mWidth * 2);
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| 217 | top = -((_getDerivedTop() * 2) - 1);
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| 218 | bottom = top - (mHeight * 2);
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| 219 |
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| 220 | HardwareVertexBufferSharedPtr vbuf =
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| 221 | mRenderOp.vertexData->vertexBufferBinding->getBuffer(POSITION_BINDING);
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| 222 | float* pPos = static_cast<float*>(
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| 223 | vbuf->lock(HardwareBuffer::HBL_DISCARD) );
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| 224 |
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| 225 | // Use the furthest away depth value, since materials should have depth-check off
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| 226 | // This initialised the depth buffer for any 3D objects in front
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| 227 | Real zValue = Root::getSingleton().getRenderSystem()->getMaximumDepthInputValue();
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| 228 | *pPos++ = left;
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| 229 | *pPos++ = top;
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| 230 | *pPos++ = zValue;
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| 231 |
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| 232 | *pPos++ = left;
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| 233 | *pPos++ = bottom;
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| 234 | *pPos++ = zValue;
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| 235 |
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| 236 | *pPos++ = right;
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| 237 | *pPos++ = top;
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| 238 | *pPos++ = zValue;
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| 239 |
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| 240 | *pPos++ = right;
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| 241 | *pPos++ = bottom;
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| 242 | *pPos++ = zValue;
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| 243 |
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| 244 | vbuf->unlock();
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| 245 | }
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| 246 | //---------------------------------------------------------------------
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| 247 | void PanelOverlayElement::updateTextureGeometry(void)
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| 248 | {
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| 249 | // Generate for as many texture layers as there are in material
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| 250 | if (!mpMaterial.isNull() && mInitialised)
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| 251 | {
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| 252 | // Assume one technique and pass for the moment
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| 253 | size_t numLayers = mpMaterial->getTechnique(0)->getPass(0)->getNumTextureUnitStates();
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| 254 |
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| 255 | VertexDeclaration* decl = mRenderOp.vertexData->vertexDeclaration;
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| 256 | // Check the number of texcoords we have in our buffer now
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| 257 | if (mNumTexCoordsInBuffer > numLayers)
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| 258 | {
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| 259 | // remove extras
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| 260 | for (size_t i = mNumTexCoordsInBuffer; i > numLayers; --i)
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| 261 | {
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| 262 | decl->removeElement(VES_TEXTURE_COORDINATES, i);
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| 263 | }
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| 264 | }
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| 265 | else if (mNumTexCoordsInBuffer < numLayers)
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| 266 | {
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| 267 | // Add extra texcoord elements
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| 268 | size_t offset = VertexElement::getTypeSize(VET_FLOAT2) * mNumTexCoordsInBuffer;
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| 269 | for (size_t i = mNumTexCoordsInBuffer; i < numLayers; ++i)
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| 270 | {
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| 271 | decl->addElement(TEXCOORD_BINDING,
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| 272 | offset, VET_FLOAT2, VES_TEXTURE_COORDINATES, i);
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| 273 | offset += VertexElement::getTypeSize(VET_FLOAT2);
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| 274 |
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| 275 | }
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| 276 | }
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| 277 |
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| 278 | // if number of layers changed at all, we'll need to reallocate buffer
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| 279 | if (mNumTexCoordsInBuffer != numLayers)
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| 280 | {
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| 281 | // NB reference counting will take care of the old one if it exists
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| 282 | HardwareVertexBufferSharedPtr newbuf =
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| 283 | HardwareBufferManager::getSingleton().createVertexBuffer(
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| 284 | decl->getVertexSize(TEXCOORD_BINDING), mRenderOp.vertexData->vertexCount,
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| 285 | HardwareBuffer::HBU_STATIC_WRITE_ONLY // mostly static except during resizing
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| 286 | );
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| 287 | // Bind buffer, note this will unbind the old one and destroy the buffer it had
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| 288 | mRenderOp.vertexData->vertexBufferBinding->setBinding(TEXCOORD_BINDING, newbuf);
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| 289 | // Set num tex coords in use now
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| 290 | mNumTexCoordsInBuffer = numLayers;
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| 291 | }
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| 292 |
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| 293 | // Get the tcoord buffer & lock
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| 294 | if (mNumTexCoordsInBuffer)
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| 295 | {
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| 296 | HardwareVertexBufferSharedPtr vbuf =
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| 297 | mRenderOp.vertexData->vertexBufferBinding->getBuffer(TEXCOORD_BINDING);
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| 298 | float* pVBStart = static_cast<float*>(
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| 299 | vbuf->lock(HardwareBuffer::HBL_DISCARD) );
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| 300 |
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| 301 | size_t uvSize = VertexElement::getTypeSize(VET_FLOAT2) / sizeof(float);
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| 302 | size_t vertexSize = decl->getVertexSize(TEXCOORD_BINDING) / sizeof(float);
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| 303 | for (ushort i = 0; i < numLayers; ++i)
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| 304 | {
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| 305 | // Calc upper tex coords
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| 306 | Real upperX = mU2 * mTileX[i];
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| 307 | Real upperY = mV2 * mTileY[i];
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| 308 |
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| 309 |
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| 310 | /*
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| 311 | 0-----2
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| 312 | | /|
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| 313 | | / |
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| 314 | |/ |
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| 315 | 1-----3
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| 316 | */
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| 317 | // Find start offset for this set
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| 318 | float* pTex = pVBStart + (i * uvSize);
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| 319 |
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| 320 | pTex[0] = mU1;
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| 321 | pTex[1] = mV1;
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| 322 |
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| 323 | pTex += vertexSize; // jump by 1 vertex stride
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| 324 | pTex[0] = mU1;
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| 325 | pTex[1] = upperY;
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| 326 |
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| 327 | pTex += vertexSize;
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| 328 | pTex[0] = upperX;
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| 329 | pTex[1] = mV1;
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| 330 |
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| 331 | pTex += vertexSize;
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| 332 | pTex[0] = upperX;
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| 333 | pTex[1] = upperY;
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| 334 | }
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| 335 | vbuf->unlock();
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| 336 | }
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| 337 | }
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| 338 | }
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| 339 | //-----------------------------------------------------------------------
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| 340 | void PanelOverlayElement::addBaseParameters(void)
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| 341 | {
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| 342 | OverlayContainer::addBaseParameters();
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| 343 | ParamDictionary* dict = getParamDictionary();
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| 344 |
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| 345 | dict->addParameter(ParameterDef("uv_coords",
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| 346 | "The texture coordinates for the texture. 1 set of uv values."
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| 347 | , PT_STRING),
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| 348 | &msCmdUVCoords);
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| 349 |
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| 350 | dict->addParameter(ParameterDef("tiling",
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| 351 | "The number of times to repeat the background texture."
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| 352 | , PT_STRING),
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| 353 | &msCmdTiling);
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| 354 |
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| 355 | dict->addParameter(ParameterDef("transparent",
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| 356 | "Sets whether the panel is transparent, i.e. invisible itself "
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| 357 | "but it's contents are still displayed."
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| 358 | , PT_BOOL),
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| 359 | &msCmdTransparent);
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| 360 | }
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| 361 | //-----------------------------------------------------------------------
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| 362 | // Command objects
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| 363 | //-----------------------------------------------------------------------
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| 364 | String PanelOverlayElement::CmdTiling::doGet(const void* target) const
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| 365 | {
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| 366 | // NB only returns 1st layer tiling
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| 367 | String ret = "0 " + StringConverter::toString(
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| 368 | static_cast<const PanelOverlayElement*>(target)->getTileX() );
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| 369 | ret += " " + StringConverter::toString(
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| 370 | static_cast<const PanelOverlayElement*>(target)->getTileY() );
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| 371 | return ret;
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| 372 | }
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| 373 | void PanelOverlayElement::CmdTiling::doSet(void* target, const String& val)
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| 374 | {
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| 375 | // 3 params: <layer> <x_tile> <y_tile>
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| 376 | // Param count is validated higher up
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| 377 | std::vector<String> vec = StringUtil::split(val);
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| 378 | ushort layer = (ushort)StringConverter::parseUnsignedInt(vec[0]);
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| 379 | Real x_tile = StringConverter::parseReal(vec[1]);
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| 380 | Real y_tile = StringConverter::parseReal(vec[2]);
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| 381 |
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| 382 | static_cast<PanelOverlayElement*>(target)->setTiling(x_tile, y_tile, layer);
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| 383 | }
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| 384 | //-----------------------------------------------------------------------
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| 385 | String PanelOverlayElement::CmdTransparent::doGet(const void* target) const
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| 386 | {
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| 387 | return StringConverter::toString(
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| 388 | static_cast<const PanelOverlayElement*>(target)->isTransparent() );
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| 389 | }
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| 390 | void PanelOverlayElement::CmdTransparent::doSet(void* target, const String& val)
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| 391 | {
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| 392 | static_cast<PanelOverlayElement*>(target)->setTransparent(
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| 393 | StringConverter::parseBool(val));
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| 394 | }
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| 395 | //-----------------------------------------------------------------------
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| 396 | String PanelOverlayElement::CmdUVCoords::doGet(const void* target) const
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| 397 | {
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| 398 | Real u1, v1, u2, v2;
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| 399 |
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| 400 | static_cast<const PanelOverlayElement*>(target)->getUV(u1, v1, u2, v2);
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| 401 | String ret = " " + StringConverter::toString(u1) + " "
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| 402 | + StringConverter::toString(v1) + " " + StringConverter::toString(u2) + " "
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| 403 | + StringConverter::toString(v2);
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| 404 |
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| 405 | return ret;
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| 406 | }
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| 407 | void PanelOverlayElement::CmdUVCoords::doSet(void* target, const String& val)
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| 408 | {
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| 409 | std::vector<String> vec = StringUtil::split(val);
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| 410 |
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| 411 | static_cast<PanelOverlayElement*>(target)->setUV(
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| 412 | StringConverter::parseReal(vec[0]),
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| 413 | StringConverter::parseReal(vec[1]),
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| 414 | StringConverter::parseReal(vec[2]),
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| 415 | StringConverter::parseReal(vec[3])
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| 416 | );
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| 417 | }
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| 418 |
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| 419 | }
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| 420 |
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| 421 |
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| 422 |
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