initial commit

color.h

@@ -0,0 +1,63 @@
+#pragma once
+
+#include "diffvg.h"
+#include "vector.h"
+#include "ptr.h"
+
+enum class ColorType {
+    Constant,
+    LinearGradient,
+    RadialGradient
+};
+
+struct Constant {
+    Vector4f color;
+
+    ptr<void> get_ptr() {
+        return ptr<void>(this);
+    }
+};
+
+struct LinearGradient {
+    LinearGradient(const Vector2f &begin,
+                   const Vector2f &end,
+                   int num_stops,
+                   ptr<float> stop_offsets,
+                   ptr<float> stop_colors)
+        : begin(begin), end(end), num_stops(num_stops),
+          stop_offsets(stop_offsets.get()), stop_colors(stop_colors.get()) {}
+
+    ptr<void> get_ptr() {
+        return ptr<void>(this);
+    }
+
+    void copy_to(ptr<float> stop_offset,
+                 ptr<float> stop_colors) const;
+
+    Vector2f begin, end;
+    int num_stops;
+    float *stop_offsets;
+    float *stop_colors; // rgba
+};
+
+struct RadialGradient {
+    RadialGradient(const Vector2f &center,
+                   const Vector2f &radius,
+                   int num_stops,
+                   ptr<float> stop_offsets,
+                   ptr<float> stop_colors)
+        : center(center), radius(radius), num_stops(num_stops),
+          stop_offsets(stop_offsets.get()), stop_colors(stop_colors.get()) {}
+
+    ptr<void> get_ptr() {
+        return ptr<void>(this);
+    }
+
+    void copy_to(ptr<float> stop_offset,
+                 ptr<float> stop_colors) const;
+
+    Vector2f center, radius;
+    int num_stops;
+    float *stop_offsets;
+    float *stop_colors; // rgba
+};