From aafcab1e7237d3ccbc80945eb8379a985d567a53 Mon Sep 17 00:00:00 2001
From: Samuel Fadel <samuelfadel@gmail.com>
Date: Mon, 18 May 2015 13:10:34 -0300
Subject: ForceScheme now (hopefully) does not produce NaNs. Removed the Glyph
 class and placed all scatterplot drawing code inside the Scatterplot class.

---
 glyph.cpp | 103 --------------------------------------------------------------
 1 file changed, 103 deletions(-)
 delete mode 100644 glyph.cpp

(limited to 'glyph.cpp')

diff --git a/glyph.cpp b/glyph.cpp
deleted file mode 100644
index f143ee8..0000000
--- a/glyph.cpp
+++ /dev/null
@@ -1,103 +0,0 @@
-#include "glyph.h"
-
-#include <cmath>
-#include <QSGGeometry>
-#include <QSGGeometryNode>
-#include <QSGMaterial>
-#include <QSGFlatColorMaterial>
-
-const float PI = 3.1415f;
-
-Glyph::Glyph(QQuickItem *parent)
-    : QQuickItem(parent)
-    , m_size(0)
-{
-    setFlag(QQuickItem::ItemHasContents);
-}
-
-void Glyph::setSize(qreal size)
-{
-    if (size == m_size)
-        return;
-
-    m_size = size;
-    setWidth(size);
-    setHeight(size);
-    emit sizeChanged();
-    update();
-}
-
-void Glyph::setColor(const QColor &color)
-{
-    if (color == m_color)
-        return;
-
-    m_color = color;
-    emit colorChanged();
-    update();
-}
-
-int calculateCircleVertexCount(qreal radius)
-{
-    // 10 * sqrt(r) \approx 2*pi / acos(1 - 1 / (4*r))
-    return (int) (10.0 * sqrt(radius));
-}
-
-void updateCircleGeometry(QSGGeometry *geometry, const QRectF &bounds)
-{
-    int vertexCount = geometry->vertexCount();
-    float cy = bounds.center().x();
-    float cx = bounds.center().y();
-
-    float theta = 2 * PI / float(vertexCount);
-    float c = cosf(theta);
-    float s = sinf(theta);
-    float x = bounds.width() / 2;
-    float y = 0;
-
-    QSGGeometry::Point2D *vertexData = geometry->vertexDataAsPoint2D();
-    for (int i = 0; i < vertexCount; i++) {
-        vertexData[i].set(x + cx, y + cy);
-
-        float t = x;
-        x = c*x - s*y;
-        y = s*t + c*y;
-    }
-}
-
-QSGNode *Glyph::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *)
-{
-    QSGGeometryNode *node = 0;
-    QSGGeometry *geometry = 0;
-    QSGFlatColorMaterial *material = 0;
-    int vertexCount = calculateCircleVertexCount(m_size / 2);
-
-    if (!oldNode) {
-        node = new QSGGeometryNode;
-
-        geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), vertexCount);
-        geometry->setDrawingMode(GL_POLYGON);
-        node->setGeometry(geometry);
-        node->setFlag(QSGNode::OwnsGeometry);
-
-        material = new QSGFlatColorMaterial;
-        material->setColor(m_color);
-        node->setMaterial(material);
-        node->setFlag(QSGNode::OwnsMaterial);
-    } else {
-        node = static_cast<QSGGeometryNode *>(oldNode);
-        geometry = node->geometry();
-        geometry->allocate(vertexCount);
-    }
-
-    updateCircleGeometry(geometry, boundingRect());
-    node->markDirty(QSGNode::DirtyGeometry);
-
-    material = static_cast<QSGFlatColorMaterial *>(node->material());
-    if (material->color() != m_color) {
-        material->setColor(m_color);
-        node->markDirty(QSGNode::DirtyMaterial);
-    }
-
-    return node;
-}
-- 
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