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/**
*
* This file is part of Tulip (www.tulip-software.org)
*
* Authors: David Auber and the Tulip development Team
* from LaBRI, University of Bordeaux
*
* Tulip is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* Tulip is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
*/
#include "SOMMapElement.h"
#include <SOMMap.h>
#include <tulip/GlRect.h>
#include <tulip/GlCircle.h>
#include <tulip/ColorProperty.h>
#include <tulip/GlBoundingBoxSceneVisitor.h>
#define DEGTORAD(x) (M_PI/180.f) * x
using namespace tlp;
SOMMapElement::SOMMapElement(tlp::Coord position, tlp::Size size, SOMMap *map,
tlp::ColorProperty *colorProperty) :
som(map), position(position), size(size) {
buildMainComposite(position, size, map);
if (colorProperty)
updateColors(colorProperty);
computeNodeAreaSize();
}
SOMMapElement::~SOMMapElement() {
reset(true);
}
void SOMMapElement::setData(SOMMap* map, tlp::ColorProperty* colorProperty) {
som = map;
reset(true);
nodesMap.clear();
buildMainComposite(position, size, som);
if (colorProperty)
updateColors(colorProperty);
computeNodeAreaSize();
}
float SOMMapElement::computeMaximizedRadiusForHexagone(unsigned int width,
unsigned int height, tlp::Size& size) {
float ry = (4 * size.getH()) / (3 * height + 1) / 2;
float rx = (size.getW() / (cos(DEGTORAD(30)) * width)) / 2;
//Take the min
return rx > ry ? ry : rx;
}
void SOMMapElement::buildMainComposite(tlp::Coord basePos, tlp::Size gridSize,
SOMMap* map) {
reset(true);
SOMMap::SOMMapConnectivity conn = map->getConnectivity();
tlp::node n;
std::ostringstream oss;
oss.str("");
if (conn == SOMMap::six) {
//Compute the best radius
float r = computeMaximizedRadiusForHexagone(map->getWidth(),
map->getHeight(), gridSize);
float h = r / 2;
float ri = cos(DEGTORAD(30)) * r;
float top = basePos.getY() + gridSize.getH();
for (unsigned int i = 0; i < map->getHeight(); ++i) {
for (unsigned int j = 0; j < map->getWidth(); ++j) {
float x = (j * ri * 2) + ri;
float y = ((i + 1) * ((2 * r) - h)) - h;
Coord center(basePos.getX() + x, top - y, 0);
if (i % 2 != 0) {
center.setX(center.getX() + ri);
}
n = map->getNodeAt(j, i);
Color c = Color(255, 255, 255, 0);
tlp::GlCircle *hex = new tlp::GlCircle(center, r, c, c, true, false,
M_PI / 2.0f, 6);
oss.str("");
oss << j << "," << i;
addGlEntity(hex, oss.str());
nodesMap[n] = hex;
}
}
}
else {
Coord elementSize(gridSize.getW() / map->getWidth(), gridSize.getH()
/ map->getHeight(), 0);
for (unsigned int i = 0; i < map->getHeight(); ++i) {
for (unsigned int j = 0; j < map->getWidth(); ++j) {
Coord topLeft(j * elementSize.getX(), (map->getHeight() - i)
* elementSize.getY(), 0);
topLeft += basePos;
Coord bottomRight(topLeft.getX() + elementSize.getX(), topLeft.getY()
- elementSize.getY(), 0);
assert(topLeft.getX() < bottomRight.getX() && topLeft.getY()> bottomRight.getY());
tlp::GlRect *rec = NULL;
n = map->getNodeAt(j, i);
Color c = Color(255, 255, 255, 0);
rec = new tlp::GlRect(topLeft, bottomRight, c, c);
oss.str("");
oss << j << "," << i;
addGlEntity(rec, oss.str());
nodesMap[n] = rec;
}
}
}
}
void SOMMapElement::updateColors(ColorProperty *newColor) {
node n;
SOMMap::SOMMapConnectivity connect = som->getConnectivity();
forEach(n,som->getNodes()) {
if (connect == SOMMap::six) {
GlCircle *hex = (GlCircle*) nodesMap[n];
hex->setFillColor(newColor->getNodeValue(n));
}
else {
GlRect *rect = (GlRect*) nodesMap[n];
rect->setBottomRightColor(newColor->getNodeValue(n));
rect->setTopLeftColor(newColor->getNodeValue(n));
}
}
}
tlp::Coord SOMMapElement::getTopLeftPositionForElement(unsigned int x,
unsigned int y) {
Coord pos;
if (som->getConnectivity() == SOMMap::six) {
float r = computeMaximizedRadiusForHexagone(som->getWidth(),
som->getHeight(), size);
float h = r / 2;
float ri = cos(DEGTORAD(30)) * r;
if (y % 2 == 0)
pos.setX(x * ri * 2);
else
pos.setX(ri * (x * 2 + 1));
float ys = ((y + 1) * ((2 * r) - h)) - r;
pos.setX(position.getX() + pos.getX());
float top = position.getY() + size.getH();
pos.setY(top - ys);
}
else {
pos.set(x * (size.getW() / som->getWidth()), (som->getHeight() - y)
* (size.getH() / som->getHeight()), 0);
pos += position;
}
return pos;
}
tlp::Size SOMMapElement::getNodeAreaSize() {
return nodeAreaSize;
}
void SOMMapElement::computeNodeAreaSize() {
if (som->getConnectivity() == SOMMap::six) {
//Compute the best radius
float r = computeMaximizedRadiusForHexagone(som->getWidth(),
som->getHeight(), size);
float ri = cos(DEGTORAD(30)) * r;
nodeAreaSize = Size(2 * ri, r, 0);
}
else {
nodeAreaSize.set(size.getW() / som->getWidth(), size.getH()
/ som->getHeight(), 0);
}
}
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