new arithmetic methods

1 files changed, 240 insertions, 1 deletions

diff --git a/rotord/src/nodes_maths.h b/rotord/src/nodes_maths.h
index f8b6cd9..4b080d4 100644
--- a/rotord/src/nodes_maths.h
+++ b/rotord/src/nodes_maths.h
@@ -4,7 +4,246 @@
 #include "rotor.h"
 
 namespace Rotor {
-	
+#define COMPARISON_Equal 1
+#define COMPARISON_Not_equal 2
+#define COMPARISON_Greater 3
+#define COMPARISON_Less 4
+#define COMPARISON_Greater_or_equal 5
+#define COMPARISON_Less_or_equal 6
+	class Comparison: public Signal_node {
+		public:
+			Comparison(){};
+			Comparison(map<string,string> &settings) {
+				base_settings(settings);
+				value=find_setting(settings,"value",0.0f);
+				string _op=find_setting(settings,"operator","==");
+				if (_op=="==") op=COMPARISON_Equal;
+				if (_op=="!=") op=COMPARISON_Not_equal;
+				if (_op==">") op=COMPARISON_Greater;
+				if (_op=="<") op=COMPARISON_Less;
+				if (_op==">=") op=COMPARISON_Greater_or_equal;
+				if (_op=="<=") op=COMPARISON_Less_or_equal;
+			}
+			void link_params() {
+				for (auto p:parameter_inputs){
+					if (p->parameter=="value") p->receiver=&value;
+				}
+			};
+			Comparison* clone(map<string,string> &_settings) { return new Comparison(_settings);};
+			const float output(const Time_spec &time) {
+				if (inputs.size()) { //there should there be a way to specify number of inputs in the code rather than in xml
+                    if (inputs[0]->connection) {
+                        float in= (((Signal_node*)inputs[0]->connection)->get_output(time));
+                        switch (op) {
+                        	case COMPARISON_Equal:
+                        		return fequal(value,in)?1.0f:0.0f;
+                        		break;
+							case COMPARISON_Not_equal:
+								return fequal(value,in)?0.0f:1.0f;
+                        		break;
+							case COMPARISON_Greater:
+								return fgreater(value,in)?1.0f:0.0f;
+                        		break;
+							case COMPARISON_Less:
+								return fless(value,in)?1.0f:0.0f;
+                        		break;
+							case COMPARISON_Greater_or_equal:
+								return fgreater_or_equal(value,in)?1.0f:0.0f;
+                        		break;
+							case COMPARISON_Less_or_equal:
+								return fless_or_equal(value,in)?1.0f:0.0f;
+                        		break;
+                        }
+                    }
+			    }
+				return 0.0f;
+			}
+			int op;
+			float value;
+	};
+#define ARITHMETIC_plus 1
+#define ARITHMETIC_minus 2
+#define ARITHMETIC_multiply 3
+#define ARITHMETIC_divide 4
+#define ARITHMETIC_modulo 5
+#define ARITHMETIC_pow 6
+#define ARITHMETIC_sin 7
+#define ARITHMETIC_cos 8
+#define ARITHMETIC_ease 9
+	class Arithmetic: public Signal_node {
+		public:
+			Arithmetic(){};
+			Arithmetic(map<string,string> &settings) {
+				base_settings(settings);
+				value=find_setting(settings,"value",0.0f);
+				string _op=find_setting(settings,"operator","+");
+				if (_op=="+"||_op=="plus"||_op=="add") op=ARITHMETIC_plus;
+				if (_op=="-"||_op=="minus"||_op=="subtract") op=ARITHMETIC_minus;
+				if (_op=="*"||_op=="x"||_op=="multiply") op=ARITHMETIC_multiply;
+				if (_op=="/"||_op=="divide") op=ARITHMETIC_divide;
+				if (_op=="%"||_op=="mod"||_op=="modulo"||_op=="modulus") op=ARITHMETIC_modulo;
+				if (_op=="^"||_op=="power") op=ARITHMETIC_pow;
+				if (_op=="sin"||_op=="sine") op=ARITHMETIC_sin;
+				if (_op=="cos"||_op=="cos") op=ARITHMETIC_cos;
+				if (_op=="ease") op=ARITHMETIC_ease;
+			}
+			void link_params() {
+				for (auto p:parameter_inputs){
+					p->receiver=nullptr;
+					if (p->parameter=="value") p->receiver=&value;
+				}
+			};
+			Arithmetic* clone(map<string,string> &_settings) { return new Arithmetic(_settings);};
+			const float output(const Time_spec &time) {
+				if (op==ARITHMETIC_divide||op==ARITHMETIC_modulo){
+					if (value==0.0f) {
+						Logger& logger = Logger::get("Rotor");
+						logger.error("Arithmetic node: caught division by zero, frame "+time.frame());
+						return 0.0f;
+					}
+				}
+				if (inputs.size()) { //there should there be a way to specify number of inputs in the code rather than in xml
+                    if (inputs[0]->connection) {
+                        float in= (((Signal_node*)inputs[0]->connection)->get_output(time));
+                        switch (op) {
+                        	case ARITHMETIC_plus:
+                        		return in+value;
+                        		break;
+							case ARITHMETIC_minus:
+								return in-value;
+                        		break;
+							case ARITHMETIC_multiply:
+								return in*value;
+                        		break;
+							case ARITHMETIC_divide:
+								return in/value;
+                        		break;
+							case ARITHMETIC_modulo:
+								return fmod(in,value);
+                        		break;
+                        	case ARITHMETIC_pow:
+								return pow(in,value);
+                        		break;
+                        	case ARITHMETIC_sin:
+								return sin(in);
+                        		break;
+                        	case ARITHMETIC_cos:
+								return cos(in);
+                        		break;
+                        	case ARITHMETIC_ease:
+								return sin(in*M_PI);
+                        		break;
+                        }
+                    }
+			    }
+				return 0.0f;
+			}
+			int op;
+			float value;
+	};
+	class Signal_divide: public Signal_node {
+		public:
+			Signal_divide(){};
+			Signal_divide(map<string,string> &settings) {
+				base_settings(settings);
+				divide_amount=ofToFloat(find_setting(settings,"amount"));
+				for (auto p:parameter_inputs){
+					if (p->parameter=="amount") p->receiver=&divide_amount;
+				}
+			};
+			Signal_divide* clone(map<string,string> &_settings) { return new Signal_divide(_settings);};
+			const float output(const Time_spec &time) {
+			    if (inputs.size()) { //there should there be a way to specify number of inputs in the code rather than in xml
+                    if (inputs[0]->connection) {
+                        return (((Signal_node*)inputs[0]->connection)->get_output(time))/divide_amount;
+                    }
+			    }
+				return 0.0f;
+			}
+			float divide_amount;
+	};
+	class Is_new_integer: public Signal_node {
+		public:
+			Is_new_integer(){};
+			Is_new_integer(map<string,string> &settings) {
+				base_settings(settings);
+			};
+			Is_new_integer* clone(map<string,string> &_settings) { return new Is_new_integer(_settings);};
+			const float output(const Time_spec &time) {
+				if (inputs[0]->connection) {
+					float s1=(((Signal_node*)(inputs[0]->connection))->get_output(time));
+					float s2=(((Signal_node*)(inputs[0]->connection))->get_output(time.lastframe()));
+					if (((int)s1)>((int)s2)) {
+						return 1.0f;
+					}
+				}
+				return 0.0f;
+			}
+	};
+	class On_off: public Signal_node {
+		public:
+			On_off(){};
+			On_off(map<string,string> &settings) {
+				base_settings(settings);
+			};
+			On_off* clone(map<string,string> &_settings) { return new On_off(_settings);};
+			const float output(const Time_spec &time) {
+				if (inputs[0]->connection) {
+					float s1=(((Signal_node*)(inputs[0]->connection))->get_output(time));
+					if ((int)s1%2) return 1.0f;
+				}
+				return 0.0f;
+			}
+	};
+	//pseudo random repeatable hash function
+	//http://create.stephan-brumme.com/fnv-hash/
+	const uint32_t Prime = 0x01000193; //   16777619
+	const uint32_t Seed  = 0x811C9DC5; // 2166136261
+	/// hash a byte
+	inline uint32_t fnv1a(unsigned char oneByte, uint32_t hash = Seed)
+	{
+	  return (oneByte ^ hash) * Prime;
+	}
+	/// hash a short (two bytes)
+	inline uint32_t fnv1a(unsigned short twoBytes, uint32_t hash = Seed)
+	{
+	  const unsigned char* ptr = (const unsigned char*) &twoBytes;
+	  hash = fnv1a(*ptr++, hash);
+	  return fnv1a(*ptr  , hash);
+	}
+	/// hash a 32 bit integer (four bytes)
+	inline uint32_t fnv1a(uint32_t fourBytes, uint32_t hash = Seed)
+	{
+	  const unsigned char* ptr = (const unsigned char*) &fourBytes;
+	  hash = fnv1a(*ptr++, hash);
+	  hash = fnv1a(*ptr++, hash);
+	  hash = fnv1a(*ptr++, hash);
+	  return fnv1a(*ptr  , hash);
+	}
+	class Random: public Signal_node {
+		public:
+			Random(){};
+			Random(map<string,string> &settings) {
+				base_settings(settings);
+				seed=(Seed+find_setting(settings,"seed",0));
+				cerr<<"random:: seed "<<seed<<" ("<<Seed<<")"<<endl;
+			};
+			Random* clone(map<string,string> &_settings) { return new Random(_settings);};
+			const float output(const Time_spec &time) {
+			    if (inputs.size()) {
+                    if (inputs[0]->connection) {
+
+                    	//hash the integer part and add the fractional part back on
+                    	float o=(((Signal_node*)inputs[0]->connection)->get_output(time));
+                    	uint32_t m=(int)o;
+	                    return ((float)(fnv1a(m,seed)%((uint32_t)time.duration)))+(o-m);
+                    }
+			    }
+				return 0.0f;
+			}
+			uint32_t seed;
+		private:
+	};
 }
 
 #endif
\ No newline at end of file