BumpmapPhongMaterial.java

package rajawali.materials;

import rajawali.lights.ALight;

import com.monyetmabuk.livewallpapers.photosdof.R;

public class BumpmapPhongMaterial extends PhongMaterial {
	
	public BumpmapPhongMaterial() {
		this(false);
	}
	
	public BumpmapPhongMaterial(boolean isAnimated) {
		super(R.raw.phong_material_vertex, R.raw.bumpmap_phong_material, isAnimated);
	}
	
	@Override
	public void setShaders(String vertexShader, String fragmentShader)
	{
		StringBuffer fc = new StringBuffer();
		StringBuffer vc = new StringBuffer();
		fc.append("float normPower = 0.0;\n");

		for(int i=0; i<mLights.size(); ++i) {
			ALight light = mLights.get(i);

			if(light.getLightType() == ALight.POINT_LIGHT) {
				fc.append("L = normalize(uLightPosition").append(i).append(" + vEyeVec);\n");
				
				vc.append("dist = distance(-vEyeVec, uLightPosition").append(i).append(");\n");
				vc.append("vAttenuation").append(i).append(" = 1.0 / (uLightAttenuation").append(i).append("[1] + uLightAttenuation").append(i).append("[2] * dist + uLightAttenuation").append(i).append("[3] * dist * dist);\n");
			} else if(light.getLightType() == ALight.DIRECTIONAL_LIGHT) {
				fc.append("L = normalize(-uLightDirection").append(i).append(");\n");
				vc.append("vAttenuation").append(i).append(" = 1.0;\n");
			}
		
			fc.append("NdotL = max(dot(bumpnormal, L), 0.1);\n");
			fc.append("normPower = NdotL * vAttenuation").append(i).append(" * uLightPower").append(i).append(";\n");
			fc.append("intensity += normPower;\n");
			fc.append("Kd.rgb += uLightColor").append(i).append(" * normPower;\n");
			fc.append("Ks += pow(NdotL, uShininess) * vAttenuation").append(i).append(" * uLightPower").append(i).append(";\n");
		}
		
		super.setShaders(
				vertexShader.replace("%LIGHT_CODE%", vc.toString()), 
				fragmentShader.replace("%LIGHT_CODE%", fc.toString())
				);		
	}
}