From 0f34fd437efb936ef29ac91186321aa7251fbfb1 Mon Sep 17 00:00:00 2001
From: Samuel Fadel <samuel@nihil.ws>
Date: Tue, 23 May 2023 11:22:33 +0200
Subject: Massive changes in initial port away from Qt.

---
 colorscale.h | 41 +++++++++++++++++++++++++++++++----------
 1 file changed, 31 insertions(+), 10 deletions(-)

(limited to 'colorscale.h')

diff --git a/colorscale.h b/colorscale.h
index ffc3439..c50deb0 100644
--- a/colorscale.h
+++ b/colorscale.h
@@ -2,20 +2,41 @@
 #define COLORSCALE_H
 
 #include <initializer_list>
+#include <vector>
 
-#include <QColor>
-#include <QList>
+class Color
+{
+public:
+    Color();
+    Color(int r, int g, int b);
+    Color(int r, int g, int b, int a);
+    Color(float r, float g, float b);
+    Color(float r, float g, float b, float a);
+
+    void getRgbF(float *r, float *g, float *b) const;
+    void getRgbF(float *r, float *g, float *b, float *a) const;
+
+    void setRgb(int r, int g, int b);
+    void setRgb(int r, int g, int b, int a);
+
+    void setRgbF(float r, float g, float b);
+    void setRgbF(float r, float g, float b, float a);
+
+    float r, g, b, a;
+};
+
+using QColor = Color;
 
 class ColorScale
 {
 public:
-    ColorScale(const QColor &firstColor, const QColor &lastColor);
-    ColorScale(std::initializer_list<QColor> colors);
-    ColorScale(const QList<QColor> &colors);
+    ColorScale(const Color &firstColor, const Color &lastColor);
+    ColorScale(std::initializer_list<Color> colors);
+    ColorScale(const std::vector<Color> &colors);
     virtual ~ColorScale();
 
-    QColor operator ()(float t) const { return color(t); }
-    virtual QColor color(float t) const;
+    Color operator ()(float t) const { return color(t); }
+    virtual Color color(float t) const;
 
     void setExtents(float min, float max);
     float min() const { return m_min; }
@@ -25,11 +46,11 @@ public:
     template<typename OutputIterator>
     void sample(int samples, OutputIterator it) const;
 
-    static QColor lerp(const QColor &c1, const QColor &c2, float _t);
+    static Color lerp(const Color &c1, const Color &c2, float _t);
 
 protected:
     float m_min, m_max;
-    QList<QColor> m_colors;
+    std::vector<Color> m_colors;
 };
 
 template<typename OutputIterator>
@@ -40,7 +61,7 @@ void ColorScale::sample(int samples, OutputIterator it) const
     }
 
     float step = (max() - min()) / samples;
-    qreal r, g, b;
+    float r, g, b;
     for (float t = min(); samples-- > 0; t += step) {
         color(t).getRgbF(&r, &g, &b);
         *it++ = r;
-- 
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