Java Code Examples for org.joml.Vector3f#add()

The following examples show how to use org.joml.Vector3f#add() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: ShadowCascade.java    From lwjglbook with Apache License 2.0 5 votes vote down vote up 
public void update(Window window, Matrix4f viewMatrix, DirectionalLight light) {
    // Build projection view matrix for this cascade
    float aspectRatio = (float) window.getWidth() / (float) window.getHeight();
    projViewMatrix.setPerspective(Window.FOV, aspectRatio, zNear, zFar);
    projViewMatrix.mul(viewMatrix);

    // Calculate frustum corners in world space
    float maxZ = Float.MIN_VALUE;
    float minZ = Float.MAX_VALUE;
    for (int i = 0; i < FRUSTUM_CORNERS; i++) {
        Vector3f corner = frustumCorners[i];
        corner.set(0, 0, 0);
        projViewMatrix.frustumCorner(i, corner);
        centroid.add(corner);
        centroid.div(8.0f);
        minZ = Math.min(minZ, corner.z);
        maxZ = Math.max(maxZ, corner.z);
    }

    // Go back from the centroid up to max.z - min.z in the direction of light
    Vector3f lightDirection = light.getDirection();
    Vector3f lightPosInc = new Vector3f().set(lightDirection);
    float distance = maxZ - minZ;
    lightPosInc.mul(distance);
    Vector3f lightPosition = new Vector3f();
    lightPosition.set(centroid);
    lightPosition.add(lightPosInc);

    updateLightViewMatrix(lightDirection, lightPosition);

    updateLightProjectionMatrix();
}
Example 2
Source File: ShadowCascade.java    From lwjglbook with Apache License 2.0 5 votes vote down vote up 
public void update(Window window, Matrix4f viewMatrix, DirectionalLight light) {
    // Build projection view matrix for this cascade
    float aspectRatio = (float) window.getWidth() / (float) window.getHeight();
    projViewMatrix.setPerspective(Window.FOV, aspectRatio, zNear, zFar);
    projViewMatrix.mul(viewMatrix);

    // Calculate frustum corners in world space
    float maxZ = Float.MIN_VALUE;
    float minZ = Float.MAX_VALUE;
    for (int i = 0; i < FRUSTUM_CORNERS; i++) {
        Vector3f corner = frustumCorners[i];
        corner.set(0, 0, 0);
        projViewMatrix.frustumCorner(i, corner);
        centroid.add(corner);
        centroid.div(8.0f);
        minZ = Math.min(minZ, corner.z);
        maxZ = Math.max(maxZ, corner.z);
    }

    // Go back from the centroid up to max.z - min.z in the direction of light
    Vector3f lightDirection = light.getDirection();
    Vector3f lightPosInc = new Vector3f().set(lightDirection);
    float distance = maxZ - minZ;
    lightPosInc.mul(distance);
    Vector3f lightPosition = new Vector3f();
    lightPosition.set(centroid);
    lightPosition.add(lightPosInc);

    updateLightViewMatrix(lightDirection, lightPosition);

    updateLightProjectionMatrix();
}
Example 3
Source File: ShadowCascade.java    From lwjglbook with Apache License 2.0 5 votes vote down vote up 
public void update(Window window, Matrix4f viewMatrix, DirectionalLight light) {
    // Build projection view matrix for this cascade
    float aspectRatio = (float) window.getWidth() / (float) window.getHeight();
    projViewMatrix.setPerspective(Window.FOV, aspectRatio, zNear, zFar);
    projViewMatrix.mul(viewMatrix);

    // Calculate frustum corners in world space
    float maxZ = Float.MIN_VALUE;
    float minZ = Float.MAX_VALUE;
    for (int i = 0; i < FRUSTUM_CORNERS; i++) {
        Vector3f corner = frustumCorners[i];
        corner.set(0, 0, 0);
        projViewMatrix.frustumCorner(i, corner);
        centroid.add(corner);
        centroid.div(8.0f);
        minZ = Math.min(minZ, corner.z);
        maxZ = Math.max(maxZ, corner.z);
    }

    // Go back from the centroid up to max.z - min.z in the direction of light
    Vector3f lightDirection = light.getDirection();
    Vector3f lightPosInc = new Vector3f().set(lightDirection);
    float distance = maxZ - minZ;
    lightPosInc.mul(distance);
    Vector3f lightPosition = new Vector3f();
    lightPosition.set(centroid);
    lightPosition.add(lightPosInc);

    updateLightViewMatrix(lightDirection, lightPosition);

    updateLightProjectionMatrix();
}
Example 4
Source File: ShadowCascade.java    From lwjglbook with Apache License 2.0 5 votes vote down vote up 
public void update(Window window, Matrix4f viewMatrix, DirectionalLight light) {
    // Build projection view matrix for this cascade
    float aspectRatio = (float) window.getWidth() / (float) window.getHeight();
    projViewMatrix.setPerspective(Window.FOV, aspectRatio, zNear, zFar);
    projViewMatrix.mul(viewMatrix);

    // Calculate frustum corners in world space
    float maxZ = Float.MIN_VALUE;
    float minZ = Float.MAX_VALUE;
    for (int i = 0; i < FRUSTUM_CORNERS; i++) {
        Vector3f corner = frustumCorners[i];
        corner.set(0, 0, 0);
        projViewMatrix.frustumCorner(i, corner);
        centroid.add(corner);
        centroid.div(8.0f);
        minZ = Math.min(minZ, corner.z);
        maxZ = Math.max(maxZ, corner.z);
    }

    // Go back from the centroid up to max.z - min.z in the direction of light
    Vector3f lightDirection = light.getDirection();
    Vector3f lightPosInc = new Vector3f().set(lightDirection);
    float distance = maxZ - minZ;
    lightPosInc.mul(distance);
    Vector3f lightPosition = new Vector3f();
    lightPosition.set(centroid);
    lightPosition.add(lightPosInc);

    updateLightViewMatrix(lightDirection, lightPosition);

    updateLightProjectionMatrix();
}
Example 5
Source File: MD5Loader.java    From lwjglbook with Apache License 2.0 4 votes vote down vote up 
private static Mesh generateMesh(MD5Model md5Model, MD5Mesh md5Mesh, Vector4f defaultColour) throws Exception {
    List<VertexInfo> vertexInfoList = new ArrayList<>();
    List<Float> textCoords = new ArrayList<>();
    List<Integer> indices = new ArrayList<>();

    List<MD5Mesh.MD5Vertex> vertices = md5Mesh.getVertices();
    List<MD5Mesh.MD5Weight> weights = md5Mesh.getWeights();
    List<MD5JointInfo.MD5JointData> joints = md5Model.getJointInfo().getJoints();

    for (MD5Mesh.MD5Vertex vertex : vertices) {
        Vector3f vertexPos = new Vector3f();
        Vector2f vertexTextCoords = vertex.getTextCoords();
        textCoords.add(vertexTextCoords.x);
        textCoords.add(vertexTextCoords.y);

        int startWeight = vertex.getStartWeight();
        int numWeights = vertex.getWeightCount();

        for (int i = startWeight; i < startWeight + numWeights; i++) {
            MD5Mesh.MD5Weight weight = weights.get(i);
            MD5JointInfo.MD5JointData joint = joints.get(weight.getJointIndex());
            Vector3f rotatedPos = new Vector3f(weight.getPosition()).rotate(joint.getOrientation());
            Vector3f acumPos = new Vector3f(joint.getPosition()).add(rotatedPos);
            acumPos.mul(weight.getBias());
            vertexPos.add(acumPos);
        }

        vertexInfoList.add(new VertexInfo(vertexPos));
    }

    for (MD5Mesh.MD5Triangle tri : md5Mesh.getTriangles()) {
        indices.add(tri.getVertex0());
        indices.add(tri.getVertex1());
        indices.add(tri.getVertex2());

        // Normals
        VertexInfo v0 = vertexInfoList.get(tri.getVertex0());
        VertexInfo v1 = vertexInfoList.get(tri.getVertex1());
        VertexInfo v2 = vertexInfoList.get(tri.getVertex2());
        Vector3f pos0 = v0.position;
        Vector3f pos1 = v1.position;
        Vector3f pos2 = v2.position;

        Vector3f normal = (new Vector3f(pos2).sub(pos0)).cross(new Vector3f(pos1).sub(pos0));

        v0.normal.add(normal);
        v1.normal.add(normal);
        v2.normal.add(normal);
    }
    
    // Once the contributions have been added, normalize the result
    for(VertexInfo v : vertexInfoList) {
        v.normal.normalize();
    }

    float[] positionsArr = VertexInfo.toPositionsArr(vertexInfoList);
    float[] textCoordsArr = Utils.listToArray(textCoords);
    float[] normalsArr = VertexInfo.toNormalArr(vertexInfoList);
    int[] indicesArr = indices.stream().mapToInt(i -> i).toArray();
    Mesh mesh = new Mesh(positionsArr, textCoordsArr, normalsArr, indicesArr);

    return mesh;
}