From f533df23fb1cd3044aaa02bf74625e9b53c032c1 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Thu, 23 Jan 2014 17:57:37 +0000
Subject: mosaic node

---
 rotord/src/nodes_drawing.h | 45 +++++++++++++++++++++++++--------------------
 1 file changed, 25 insertions(+), 20 deletions(-)

(limited to 'rotord/src/nodes_drawing.h')

diff --git a/rotord/src/nodes_drawing.h b/rotord/src/nodes_drawing.h
index f4ddbf7..7e7a178 100644
--- a/rotord/src/nodes_drawing.h
+++ b/rotord/src/nodes_drawing.h
@@ -201,39 +201,44 @@ namespace Rotor {
 	class Mosaic: public Draw_node {
 		//the difficulty here is in keeping the pixels centred
 		//the center of the screen should remain in between pixels
-		//this implies that the 
 		public:
 			Mosaic(){
 				title="Mosaic";
 				description="Increases size of pixels";
 				create_image_input("Image to mosaic","Image input");
-				create_parameter("pixels","number","Height of scrren in pixels","Pixels",20.0,0.0,1.0);
+				create_parameter("pixels","number","Height of screen in pixels","Pixels",20.0,0.0,1.0);
 				NODEID="a33a1a6a-8420-11e3-831b-74d02b29f6a6";
 			};
-			Mosaic(map<string,string> &settings):Shape() {
+			Mosaic(map<string,string> &settings):Mosaic() {
 				base_settings(settings);
 			};
 			~Mosaic(){};
 			Mosaic* clone(map<string,string> &_settings) { return new Mosaic(_settings);};
 			void vector_output(cairo_t * cr,const Frame_spec &frame){
-				colour=Colour(attributes["colour"]->value);
-				cairo_set_source_rgb(cr, colour.Rdouble(),colour.Gdouble(),colour.Bdouble());
-				switch(attributes["shape"]->intVal) {
-					case SHAPE_square:
-						cairo_rectangle(cr,-frame.w/2,-frame.w/2,frame.w,frame.w);
-                        break;
-					case SHAPE_circle:
-						cairo_arc(cr,0,0,frame.w/2,0.0, 2 * M_PI);
-                        break;
-                    case SHAPE_triangle:
-                    	//subtracting PI/2 =(1.5*PI)/3 so the triangle is pointing up
-						cairo_line_to(cr,0,-frame.w/2);
-						cairo_line_to(cr,cos((0.5 * M_PI)/3)*frame.w/2,sin((0.5 * M_PI)/3)*frame.w/2);
-						cairo_line_to(cr,cos((2.5 * M_PI)/3)*frame.w/2,sin((2.5 * M_PI)/3)*frame.w/2);
-						cairo_close_path(cr);
-                        break;
+				double vpix=max(parameters["pixels"]->value,1.0);
+				double pixel_size=frame.h/vpix;
+				int h_padded=ceil(vpix/2)*2;
+				int w_padded=ceil((((vpix/frame.h)*frame.w))/2)*2;
+
+				Image *in1=image_inputs[0]->get(frame);
+				if (in1){
+					Image in=*(in1);
+					in.crop(w_padded*pixel_size,h_padded*pixel_size);
+					in.resize(w_padded,h_padded);
+					int x_start=-((w_padded*pixel_size)/2);
+					int y_start=-((h_padded*pixel_size)/2);
+					cairo_translate(cr,x_start,y_start);
+					for (int i=0;i<w_padded;i++){
+						for (int j=0;j<h_padded;j++){
+							double R=((double)in.rgb.data[3*(w_padded*j + i) + 0])/255.0;
+							double G=((double)in.rgb.data[3*(w_padded*j + i) + 1])/255.0;
+							double B=((double)in.rgb.data[3*(w_padded*j + i) + 2])/255.0;
+							cairo_set_source_rgb(cr, R,G,B);
+							cairo_rectangle(cr,i*pixel_size,j*pixel_size,pixel_size,pixel_size);
+							cairo_fill(cr);
+						}
+					}
 				}
-				cairo_fill(cr);
 			}
 		private:
 	};
-- 
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