Bert Peters
d0c888024d
Now every place uses the globally defined colors rather than specific colors whenever needed. Next: make those colors configurable.
67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
#include <GL/gl.h>
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#include "LabelVisualisation.hpp"
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#include "glutils.hpp"
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#include "RenderingState.hpp"
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using namespace fmri;
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void LabelVisualisation::draw(float)
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{
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if (RenderingState::instance().renderInteractionPaths()) {
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setGlColor(RenderingState::instance().pathColor());
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glEnableClientState(GL_VERTEX_ARRAY);
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glVertexPointer(3, GL_FLOAT, 0, nodePositions_.data());
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glDrawElements(GL_LINES, nodeIndices.size(), GL_UNSIGNED_INT, nodeIndices.data());
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glDisableClientState(GL_VERTEX_ARRAY);
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}
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glPushMatrix();
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glTranslatef(LAYER_X_OFFSET, 0, 0);
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for (auto i = 0u; i < nodeLabels.size(); ++i) {
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glPushMatrix();
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glTranslatef(nodePositions_[3 * i], nodePositions_[3 * i + 1], nodePositions_[3 * i + 2]);
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setGlColor(colorBuffer[i]);
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renderText(nodeLabels[i]);
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glPopMatrix();
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}
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glPopMatrix();
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}
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LabelVisualisation::LabelVisualisation(const std::vector<float> &positions, const LayerData &prevData,
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const std::vector<std::string> &labels)
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{
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const auto limit = std::min(prevData.numEntries(), labels.size());
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const auto maxVal = *std::max_element(prevData.data(), prevData.data() + prevData.numEntries());
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auto nodeInserter = std::back_inserter(nodePositions_);
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// First, determine all nodes elegible to be rendered.
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for (auto i = 0u; i < limit; ++i) {
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if (prevData[i] < DISPLAY_LIMIT) {
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continue;
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}
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colorBuffer.emplace_back(interpolate(prevData[i] / maxVal, POSITIVE_COLOR, NEUTRAL_COLOR));
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std::copy_n(positions.begin() + 3 * i, 3, nodeInserter);
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nodeLabels.emplace_back(labels[i]);
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}
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// Now fix the points for the interaction paths.
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nodeIndices.reserve(2 * nodeLabels.size());
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for (auto i = 0u; i < nodeLabels.size(); ++i) {
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nodeIndices.push_back(i);
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nodeIndices.push_back(i + nodeLabels.size());
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}
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// Make sure the end positions exist.
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std::copy_n(nodePositions_.begin(), nodePositions_.size(), nodeInserter);
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for (auto i = nodePositions_.size() / 2; i < nodePositions_.size(); i += 3) {
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nodePositions_[i] = LAYER_X_OFFSET;
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}
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patchTransparancy();
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}
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