added dev/MinGfx/

1 files changed, 130 insertions, 0 deletions

diff --git a/dev/MinGfx/src/color.cc b/dev/MinGfx/src/color.cc
new file mode 100644
index 0000000..cc5db87
--- /dev/null
+++ b/dev/MinGfx/src/color.cc
@@ -0,0 +1,130 @@
+/*
+ Copyright (c) 2017,2018 Regents of the University of Minnesota.
+ All Rights Reserved.
+ See corresponding header file for details.
+ */
+
+#include "color.h"
+
+#include <math.h>
+
+namespace mingfx {
+
+Color::Color() {
+    c[0] = 0.0;
+    c[1] = 0.0;
+    c[2] = 0.0;
+    c[3] = 1.0;
+}
+  
+Color::Color(float red, float green, float blue, float alpha) {
+    c[0] = red;
+    c[1] = green;
+    c[2] = blue;
+    c[3] = alpha;
+}
+  
+Color::Color(float *ptr) {
+    c[0] = ptr[0];
+    c[1] = ptr[1];
+    c[2] = ptr[2];
+    c[3] = ptr[3];
+}
+
+Color::Color(const Color& other) {
+    c[0] = other[0];
+    c[1] = other[1];
+    c[2] = other[2];
+    c[3] = other[3];
+}
+  
+Color::Color(const std::vector<float> &vals) {
+    c[0] = vals[0];
+    c[1] = vals[1];
+    c[2] = vals[2];
+    if (vals.size() > 3) {
+        c[3] = vals[3];
+    }
+    else {
+        c[3] = 1.0;
+    }
+}
+
+    
+Color::~Color() {
+}
+  
+bool Color::operator==(const Color& other) const {
+    return ((other[0] == c[0]) &&
+            (other[1] == c[1]) &&
+            (other[2] == c[2]) &&
+            (other[3] == c[3]));
+}
+  
+bool Color::operator!=(const Color& other) const {
+    return ((other[0] != c[0]) ||
+            (other[1] != c[1]) ||
+            (other[2] != c[2]) ||
+            (other[3] != c[3]));
+}
+  
+Color& Color::operator=(const Color& other) {
+    c[0] = other[0];
+    c[1] = other[1];
+    c[2] = other[2];
+    c[3] = other[3];
+    return *this;
+}
+  
+float Color::operator[](const int i) const {
+    return c[i];
+}
+  
+float& Color::operator[](const int i) {
+    return c[i];
+}
+
+    
+const float * Color::value_ptr() const {
+    return c;
+}
+
+std::vector<float> Color::ToVector() const {
+    std::vector<float> v;
+    v.push_back(c[0]);
+    v.push_back(c[1]);
+    v.push_back(c[2]);
+    v.push_back(c[3]);
+    return v;
+}
+    
+    
+Color Color::Lerp(const Color &b, float alpha) const {
+    float red = (1.0f-alpha)*(*this)[0] + alpha*b[0];
+    float grn = (1.0f-alpha)*(*this)[1] + alpha*b[1];
+    float blu = (1.0f-alpha)*(*this)[2] + alpha*b[2];
+    float alp = (1.0f-alpha)*(*this)[3] + alpha*b[3];
+    return Color(red,grn,blu,alp);
+}
+
+Color Color::Lerp(const Color &a, const Color &b, float alpha) {
+    float red = (1.0f-alpha)*a[0] + alpha*b[0];
+    float grn = (1.0f-alpha)*a[1] + alpha*b[1];
+    float blu = (1.0f-alpha)*a[2] + alpha*b[2];
+    float alp = (1.0f-alpha)*a[3] + alpha*b[3];
+    return Color(red,grn,blu,alp);
+}
+
+    
+std::ostream & operator<< ( std::ostream &os, const Color &c) {
+  return os << "(" << c[0] << ", " << c[1] << ", " << c[2] << ", " << c[3] << ")";
+}
+
+std::istream & operator>> ( std::istream &is, Color &c) {
+  // format:  (r, g, b, a)
+  char dummy;
+  return is >> dummy >> c[0] >> dummy >> c[1] >> dummy >> c[2] >> dummy >> c[3] >> dummy;
+}
+
+
+} // end namespace