From f191b170379e5ae7f237aa2f7adae5f387caaa35 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@herge.(none)>
Date: Tue, 25 Jun 2013 12:46:38 +0100
Subject: blend node/ blend, subtract, multiply modes

---
 rotord/rotor.h | 63 +++++++++++++++++++++++++++++++++++++++-------------------
 1 file changed, 43 insertions(+), 20 deletions(-)

(limited to 'rotord')

diff --git a/rotord/rotor.h b/rotord/rotor.h
index 0c16df7..cb1e815 100755
--- a/rotord/rotor.h
+++ b/rotord/rotor.h
@@ -119,19 +119,19 @@ namespace Rotor {
 		//so - pixels.add[0x78][0x66]; will give the precalculated result of adding with saturation
 		public:
 			pixeltables(){
-				add=new uint8_t*[0xFF];
-				multiply=new uint8_t*[0xFF];
-				for (int i=0;i<0xFF;i++){
-					add[i]=new uint8_t[0xFF];
-					multiply[i]=new uint8_t[0xFF];
-					for (int j=0;j<0xFF;j++){
+				add=new uint8_t*[256];
+				multiply=new uint8_t*[256];
+				for (int i=0;i<256;i++){
+					add[i]=new uint8_t[256];
+					multiply[i]=new uint8_t[256];
+					for (int j=0;j<256;j++){
 						add[i][j]=(uint8_t)min(i+j,0xFF);
 						multiply[i][j]=(uint8_t)((((float)i)/255.0f)*(((float)j)/255.0f)*255.0f);
 					}
 				}
 			}
 			virtual ~pixeltables(){
-				for (int i=0;i<0xFF;i++){
+				for (int i=0;i<256;i++){
 					delete[] add[i];
 					delete[] multiply[i];
 				}
@@ -265,6 +265,8 @@ namespace Rotor {
 				else {
 					for (int i=0;i<w*h*3;i++){
 						//calculate with tables
+						uint8_t p1=RGBdata[i];
+						uint8_t p2=other.RGBdata[i];
 						RGBdata[i]=pixels.multiply[RGBdata[i]][other.RGBdata[i]];
 					}
 				}
@@ -282,10 +284,25 @@ namespace Rotor {
 				}
 				return *this;
 			}
+			//scalar operations allocate a new image.
+			//maybe this could not be the case if the data is owned by this image?
+			//need to look into auto_ptr
+			Image & operator*=(const float &amount) {
+				uint8_t *LUT=new uint8_t[256];
+				for (int i=0;i<256;i++) {
+					LUT[i]=(uint8_t)min(0xFF,max(0,(int)(i*amount)));
+				}
+				for (int i=0;i<w*h*3;i++){
+					//calculate with table
+					RGBdata[i]=LUT[RGBdata[i]];
+				}
+				delete[] LUT;
+				return *this;
+			}
 			Image * operator*(const float &amount) {
 				Image *other=new Image(w,h);
-				uint8_t *LUT=new uint8_t[0xFF];
-				for (int i=0;i<0xFF;i++) {
+				uint8_t *LUT=new uint8_t[256];
+				for (int i=0;i<256;i++) {
 					LUT[i]=(uint8_t)min(0xFF,max(0,(int)(i*amount)));
 				}
 				for (int i=0;i<w*h*3;i++){
@@ -296,8 +313,8 @@ namespace Rotor {
 			}
 			Image * operator+(const float &amount) {
 				Image *other=new Image(w,h);
-				uint8_t *LUT=new uint8_t[0xFF];
-				for (int i=0;i<0xFF;i++) {
+				uint8_t *LUT=new uint8_t[256];
+				for (int i=0;i<256;i++) {
 					LUT[i]=(uint8_t)min(0xFF,max(0,(int)(i+(amount*255.0f))));
 				}
 				for (int i=0;i<w*h*3;i++){
@@ -308,8 +325,8 @@ namespace Rotor {
 			}
 			Image * operator-(const float &amount) {
 				Image *other=new Image(w,h);
-				uint8_t *LUT=new uint8_t[0xFF];
-				for (int i=0;i<0xFF;i++) {
+				uint8_t *LUT=new uint8_t[256];
+				for (int i=0;i<256;i++) {
 					LUT[i]=(uint8_t)min(0xFF,max(0,(int)(i-(amount*255.0f))));
 				}
 				for (int i=0;i<w*h*3;i++){
@@ -320,8 +337,8 @@ namespace Rotor {
 			}
 			Image * operator/(const float &amount) {
 				Image *other=new Image(w,h);
-				uint8_t *LUT=new uint8_t[0xFF];
-				for (int i=0;i<0xFF;i++) {
+				uint8_t *LUT=new uint8_t[256];
+				for (int i=0;i<256;i++) {
 					LUT[i]=(uint8_t)min(0xFF,max(0,(int)(i/amount)));
 				}
 				for (int i=0;i<w*h*3;i++){
@@ -790,7 +807,7 @@ namespace Rotor {
 			Video_output(map<string,string> &settings) {
 				base_settings(settings);
 			};
-			~Video_output(){ }; 
+			~Video_output(){ };
 			Image *output(const Frame_spec &frame){
 				if (image_inputs[0]->connection) {
 					return ((Image_node*)(image_inputs[0]->connection))->get_output(frame);
@@ -854,7 +871,7 @@ namespace Rotor {
 					palette.push_back(Colour(colours.substr(i*6,6)));
 				}
 				for (auto i: palette) {
-					cerr << "Signal_colour found palette colour: "<<(int)i.r<<" "<<(int)i.g<<" "<<(int)i.b<<endl;					
+					cerr << "Signal_colour found palette colour: "<<(int)i.r<<" "<<(int)i.g<<" "<<(int)i.b<<endl;
 				}
 				prevcol=-1;
 			};
@@ -937,7 +954,7 @@ namespace Rotor {
 						p->receiver=&value;
 					}
 				}
-				
+
 			};
 			~Image_arithmetic(){if (image) delete image;};
 			Image *output(const Frame_spec &frame){
@@ -1183,6 +1200,7 @@ namespace Rotor {
 				if (_mode=="screen") mode=BLEND_screen;
 				if (_mode=="multiply") mode=BLEND_multiply;
 				if (_mode=="blend") mode=BLEND_blend;
+				cerr<<"blend node: mode: "<<mode<<" amount: "<<amount<<endl;
 			};
 			void link_params() {
 				for (auto p:parameter_inputs){
@@ -1194,7 +1212,7 @@ namespace Rotor {
 			Image *output(const Frame_spec &frame){
 				if (image_inputs.size()) {
 					if (image_inputs[0]->connection){
-						if (inputs.size()>1) {
+						if (image_inputs.size()>1) {
 	                    	if (image_inputs[1]->connection) {
 	                    		//copy incoming image **writable
 								image->free();
@@ -1206,7 +1224,12 @@ namespace Rotor {
 									case BLEND_multiply:
 										(*image)*=(*(((Image_node*)image_inputs[1]->connection)->get_output(frame)));
 										break;
-
+									case BLEND_blend:
+										(*image)*=(1.0f-amount);
+										Image *in=(*(((Image_node*)image_inputs[1]->connection)->get_output(frame)))*amount;
+										(*image)+=(*in);
+										delete in;
+										break;
 								}
 								return image;
 	                    	}
-- 
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