Function genModelViewMatrices

src/llm/Camera.ts:69–99

(state: IProgramState, layout: IModelLayout, modelOffset: Vec3 = Vec3.zero)

}

export function genModelViewMatrices(state: IProgramState, layout: IModelLayout, modelOffset: Vec3 = Vec3.zero) {
    let { camera } = state;

    let bb = new BoundingBox3d();
    for (let c of layout.cubes) {
        let tl = new Vec3(c.x, c.y, c.z).add(modelOffset);
        let br = new Vec3(c.x + c.dx, c.y + c.dy, c.z + c.dz).add(modelOffset);
        bb.addInPlace(tl);
        bb.addInPlace(br);
    }
    let localDist = bb.size().len();

    let { lookAt, camPos } = cameraToMatrixView(camera);
    let dist = 200 * camera.angle.z;

    // let persp = Mat4f.fromPersp(40, state.render.size.x / state.render.size.y, dist / 100, localDist + Math.max(dist * 2, 100000));
    let persp = Mat4f.fromPersp(40, state.render.size.x / state.render.size.y, 100, 10000000);
    let viewMtx = persp.mul(lookAt);
    let modelMtx = new Mat4f();
    modelMtx[0] = 1.0;
    modelMtx[5] = 0.0;
    modelMtx[6] = -1.0;
    modelMtx[9] = -1.0;
    modelMtx[10] = 0.0;

    state.camera.modelMtx = modelMtx;
    state.camera.viewMtx = viewMtx;
    state.camera.camPos = camPos;
    state.camera.camPosModel = modelMtx.invert().mulVec3Affine(camPos);
    state.camera.lookAtMtx = lookAt;
}

export function camScaleToScreen(state: IProgramState, modelPt: Vec3) {
    let camDist = state.camera.camPosModel.dist(modelPt);