116 lines
3.8 KiB
C++
116 lines
3.8 KiB
C++
/* Copyright (C) 2022 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.h"
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#include "Decal.h"
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#include "graphics/Terrain.h"
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#include "maths/MathUtil.h"
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#include "ps/CStrInternStatic.h"
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CModelAbstract* CModelDecal::Clone() const
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{
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CModelDecal* clone = new CModelDecal(m_Terrain, m_Decal);
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return clone;
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}
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void CModelDecal::CalcVertexExtents(ssize_t& i0, ssize_t& j0, ssize_t& i1, ssize_t& j1)
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{
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CVector3D corner0(m_Decal.m_OffsetX + m_Decal.m_SizeX/2, 0, m_Decal.m_OffsetZ + m_Decal.m_SizeZ/2);
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CVector3D corner1(m_Decal.m_OffsetX + m_Decal.m_SizeX/2, 0, m_Decal.m_OffsetZ - m_Decal.m_SizeZ/2);
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CVector3D corner2(m_Decal.m_OffsetX - m_Decal.m_SizeX/2, 0, m_Decal.m_OffsetZ - m_Decal.m_SizeZ/2);
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CVector3D corner3(m_Decal.m_OffsetX - m_Decal.m_SizeX/2, 0, m_Decal.m_OffsetZ + m_Decal.m_SizeZ/2);
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corner0 = GetTransform().Transform(corner0);
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corner1 = GetTransform().Transform(corner1);
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corner2 = GetTransform().Transform(corner2);
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corner3 = GetTransform().Transform(corner3);
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i0 = floor(std::min(std::min(corner0.X, corner1.X), std::min(corner2.X, corner3.X)) / TERRAIN_TILE_SIZE);
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j0 = floor(std::min(std::min(corner0.Z, corner1.Z), std::min(corner2.Z, corner3.Z)) / TERRAIN_TILE_SIZE);
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i1 = ceil(std::max(std::max(corner0.X, corner1.X), std::max(corner2.X, corner3.X)) / TERRAIN_TILE_SIZE);
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j1 = ceil(std::max(std::max(corner0.Z, corner1.Z), std::max(corner2.Z, corner3.Z)) / TERRAIN_TILE_SIZE);
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i0 = Clamp<ssize_t>(i0, 0, m_Terrain->GetVerticesPerSide() - 1);
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j0 = Clamp<ssize_t>(j0, 0, m_Terrain->GetVerticesPerSide() - 1);
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i1 = Clamp<ssize_t>(i1, 0, m_Terrain->GetVerticesPerSide() - 1);
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j1 = Clamp<ssize_t>(j1, 0, m_Terrain->GetVerticesPerSide() - 1);
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}
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void CModelDecal::CalcBounds()
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{
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ssize_t i0, j0, i1, j1;
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CalcVertexExtents(i0, j0, i1, j1);
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m_WorldBounds = m_Terrain->GetVertexesBound(i0, j0, i1, j1);
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}
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void CModelDecal::SetTerrainDirty(ssize_t i0, ssize_t j0, ssize_t i1, ssize_t j1)
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{
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// Check if there's no intersection between the dirty range and this decal
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ssize_t bi0, bj0, bi1, bj1;
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CalcVertexExtents(bi0, bj0, bi1, bj1);
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if (bi1 < i0 || bi0 > i1 || bj1 < j0 || bj0 > j1)
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return;
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SetDirty(RENDERDATA_UPDATE_VERTICES);
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}
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void CModelDecal::InvalidatePosition()
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{
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m_PositionValid = false;
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}
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void CModelDecal::ValidatePosition()
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{
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if (m_PositionValid)
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{
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ENSURE(!m_Parent || m_Parent->m_PositionValid);
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return;
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}
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if (m_Parent && !m_Parent->m_PositionValid)
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{
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// Make sure we don't base our calculations on
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// a parent animation state that is out of date.
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m_Parent->ValidatePosition();
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// Parent will recursively call our validation.
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ENSURE(m_PositionValid);
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return;
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}
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m_PositionValid = true;
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}
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void CModelDecal::SetTransform(const CMatrix3D& transform)
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{
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// Since decals are assumed to be horizontal and projected downwards
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// onto the terrain, use just the Y-axis rotation and the translation
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CMatrix3D newTransform;
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newTransform.SetYRotation(transform.GetYRotation() + m_Decal.m_Angle);
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newTransform.Translate(transform.GetTranslation());
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CRenderableObject::SetTransform(newTransform);
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InvalidatePosition();
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}
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void CModelDecal::RemoveShadows()
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{
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m_Decal.m_Material.AddShaderDefine(str_DISABLE_RECEIVE_SHADOWS, str_1);
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}
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