# split pd-maths into pd-core and pd-image (0.2.3)

source/core/bit_util.cpp

@@ -0,0 +1,38 @@
+/*
+MIT License
+Copyright (c) 2024 - 2025 René Amthor (tobid7)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+ */
+
+#include <pd/core/bit_util.hpp>
+
+namespace PD::BitUtil {
+bool IsSingleBit(u32 v) { return v && !(v & (v - 1)); }
+u32 GetPow2(u32 v) {
+  v--;
+  v |= v >> 1;
+  v |= v >> 2;
+  v |= v >> 4;
+  v |= v >> 8;
+  v |= v >> 16;
+  v++;
+  return (v >= 64 ? v : 64);
+}
+}  // namespace PD::BitUtil

source/core/color.cpp

@@ -0,0 +1,72 @@
+/*
+MIT License
+
+Copyright (c) 2024 - 2025 tobid7
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+ */
+
+#include <pd/core/color.hpp>
+
+namespace PD {
+// The Solution of the biggest performance issue
+// A Simple Lookup table
+static const std::map<char, int> HEX_DEC = {
+    {'0', 0},  {'1', 1},  {'2', 2},  {'3', 3},  {'4', 4},  {'5', 5},
+    {'6', 6},  {'7', 7},  {'8', 8},  {'9', 9},  {'a', 10}, {'b', 11},
+    {'c', 12}, {'d', 13}, {'e', 14}, {'f', 15}, {'A', 10}, {'B', 11},
+    {'C', 12}, {'D', 13}, {'E', 14}, {'F', 15}};
+
+Color& Color::Hex(const std::string& hex) {
+#ifdef PD_NO_SAFE_CODE
+  /// Safetey check (not required if you programm well xd)
+  if (hex.length() != 7 || hex.length() != 9 || hex.length() != 6 ||
+      hex.length() != 8 || std::find_if(hex.begin(), hex.end(), [](char c) {
+                             return !std::isxdigit(c);
+                           }) != hex.end()) {
+    return *this;
+  }
+#endif
+  int offset = ((hex.length() == 7 || hex.length() == 9) ? 1 : 0);
+  m_r = HEX_DEC.at(hex[offset]) * 16 + HEX_DEC.at(hex[offset + 1]);
+  offset += 2;
+  m_g = HEX_DEC.at(hex[offset]) * 16 + HEX_DEC.at(hex[offset + 1]);
+  offset += 2;
+  m_b = HEX_DEC.at(hex[offset]) * 16 + HEX_DEC.at(hex[offset + 1]);
+  offset += 2;
+  if (hex.length() == 9) {
+    m_a = HEX_DEC.at(hex[offset]) * 16 + HEX_DEC.at(hex[offset + 1]);
+  } else {
+    m_a = 255;
+  }
+  return *this;
+}
+
+std::string Color::Hex(bool rgba) const {
+  std::stringstream s;
+  s << "#";
+  s << std::hex << std::setw(2) << std::setfill('0') << m_r;
+  s << std::hex << std::setw(2) << std::setfill('0') << m_g;
+  s << std::hex << std::setw(2) << std::setfill('0') << m_b;
+  if (rgba) {
+    s << std::hex << std::setw(2) << std::setfill('0') << m_a;
+  }
+  return s.str();
+}
+}  // namespace PD