pro.FlowField-Perlin

pro.FlowField-Perlin

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// Create a Perlin Noise Field
	void initPerlinField() {
	// Reseed Noise
		noiseSeed((int)random(10000));

//TODO:  make the x,y noise offset a PVector
		float xOffSetNoise = 0;	
	// Iterate through the 2D array of PVectors
		for (int i = 0; i < flowFieldCols; ++i) {
			float yOffSetNoise = 0;
			for (int j = 0; j < flowFieldRows; ++j) {

				float theta = map(noise(xOffSetNoise, yOffSetNoise), 0 ,1 ,0 ,TWO_PI);
				
			// Convert from Polar to Cartesian
			// according to SOHCAHTOA, cos(theta)=1 and sin(theta) = 0 when theta = 0 (aka (1,0))
				vectorField[i][j] = new PVector(cos(theta), sin(theta));

			// increment the Perlin Noise
				yOffSetNoise += 0.1;
			}
			xOffSetNoise += 0.1;
		}
	}
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