Implement `moveTexCoords` for `GridWarpSurface` textures

src/Surfaces/GridWarpSurface.cpp

@@ -107,9 +107,19 @@ ofPolyline GridWarpSurface::getTextureHitArea(){
 	ofPolyline line;
 	vector <ofVec2f> & texCoords = mesh.getTexCoords();
 	ofVec2f textureSize = ofVec2f(source->getTexture()->getWidth(), source->getTexture()->getHeight());
-	for(int i = 0; i < texCoords.size(); i++){
-		line.addVertex(ofPoint(texCoords[i] * textureSize));
-	}
+	
+	int vertsPerRow = _gridCols + 1;
+	int vertsPerCol = _gridRows + 1;
+	
+	int a = 0;
+	int b = _gridCols;
+	int c = (_gridRows * vertsPerRow) + (vertsPerRow - 1);
+	int d = (_gridRows * vertsPerRow);
+	
+	line.addVertex(ofPoint(texCoords[a] * textureSize));
+	line.addVertex(ofPoint(texCoords[b] * textureSize));
+	line.addVertex(ofPoint(texCoords[c] * textureSize));
+	line.addVertex(ofPoint(texCoords[d] * textureSize));
 	line.close();
 
 	return line;

src/UserInterface/TextureEditor.cpp

@@ -242,10 +242,15 @@ void TextureEditor::moveTexCoords(ofVec2f by){
 	if(surface == 0){
 		return;
 	}
+
 	vector <ofVec2f> & texCoords = surface->getTexCoords();
 	ofVec2f textureSize = ofVec2f(surface->getSource()->getTexture()->getWidth(),
 								  surface->getSource()->getTexture()->getHeight());
 	
+	for(int i = 0; i < joints.size(); i++){
+		joints[i]->position += by;
+	}
+	
 	if(surface->getType() == SurfaceType::GRID_WARP_SURFACE){
 		GridWarpSurface * s = (GridWarpSurface *)surface;
 		
@@ -281,7 +286,6 @@ void TextureEditor::moveTexCoords(ofVec2f by){
 		}
 	}else{
 		for(int i = 0; i < texCoords.size(); i++){
-			joints[i]->position += by;
 			surface->setTexCoord(i, joints[i]->position / textureSize);
 		}
 	}