mirror of
https://github.com/worldforge/cyphesis
synced 2026-08-13 12:26:04 -04:00
105 lines
3.8 KiB
C++
105 lines
3.8 KiB
C++
/*
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Copyright (C) 2015 erik
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This program 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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This program 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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <rulesets/mind/SharedTerrain.h>
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#include <Mercator/Segment.h>
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#include <cmath>
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SharedTerrain::SharedTerrain() :
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m_terrain(new Mercator::Terrain())
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{
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}
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SharedTerrain::~SharedTerrain()
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{
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}
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std::vector<SharedTerrain::BasePointDefinition> SharedTerrain::setBasePoints(const std::vector<BasePointDefinition>& basepoints)
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{
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std::vector<BasePointDefinition> changedPoints;
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for (auto& basepointDef : basepoints) {
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Mercator::BasePoint existingPoint;
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if (!m_terrain->getBasePoint(basepointDef.x, basepointDef.y, existingPoint)
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|| (existingPoint.height() != basepointDef.basePoint.height() || existingPoint.falloff() != basepointDef.basePoint.falloff()
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|| existingPoint.roughness() != basepointDef.basePoint.roughness())) {
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m_terrain->setBasePoint(basepointDef.x, basepointDef.y, basepointDef.basePoint);
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changedPoints.push_back(basepointDef);
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}
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}
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return std::move(changedPoints);
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}
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void SharedTerrain::blitHeights(int xMin, int xMax, int yMin, int yMax, std::vector<float>& heights) const
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{
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int segmentResolution = m_terrain->getResolution();
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int xSize = xMax - xMin;
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int segmentXMin = std::lround(floor(xMin / (double)segmentResolution));
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int segmentXMax = std::lround(floor(xMax / (double)segmentResolution));
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int segmentYMin = std::lround(floor(yMin / (double)segmentResolution));
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int segmentYMax = std::lround(floor(yMax / (double)segmentResolution));
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for (int segmentX = segmentXMin; segmentX <= segmentXMax; ++segmentX) {
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for (int segmentY = segmentYMin; segmentY <= segmentYMax; ++segmentY) {
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int segmentXStart = segmentX * segmentResolution;
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int segmentYStart = segmentY * segmentResolution;
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int dataXOffset = segmentXStart - xMin;
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int dataYOffset = segmentYStart - yMin;
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int xStart = std::max(xMin - segmentXStart, 0);
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int yStart = std::max(yMin - segmentYStart, 0);
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int xEnd = std::min<int>(xMax - segmentXStart, segmentResolution);
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int yEnd = std::min<int>(yMax - segmentYStart, segmentResolution);
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Mercator::Segment* segment = m_terrain->getSegment(segmentX, segmentY);
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if (segment) {
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if (!segment->isValid()) {
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segment->populate();
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}
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for (int x = xStart; x < xEnd; ++x) {
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for (int y = yStart; y < yEnd; ++y) {
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heights[((dataYOffset + y) * xSize) + (dataXOffset + x)] = segment->get(x, y);
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}
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}
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} else {
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//No valid segment found; fill with default value of -10.
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for (int x = xStart; x < xEnd; ++x) {
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for (int y = yStart; y < yEnd; ++y) {
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heights[((dataYOffset + y) * xSize) + (dataXOffset + x)] = -10;
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}
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}
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}
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}
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}
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}
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const Mercator::Terrain& SharedTerrain::getTerrain() const
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{
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return *m_terrain.get();
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}
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