Beiträge von ritknat

local bridgeutil = require "bridgeutil"


function data()


local dir = "bridge/ritknat_gitter/"




local railing = {
dir .. "gitterbruecke_A.mdl",
dir .. "gitterbruecke_A.mdl",
dir .. "gitterbruecke_B.mdl",
dir .. "gitterbruecke_A.mdl",
dir .. "gitterbruecke_A.mdl",


dir .. "gitterbruecke_A.mdl",
dir .. "gitterbruecke_A.mdl",
dir .. "gitterbruecke_B.mdl",
}


local config = {


railingBegin = railing,
railingRepeat = railing,
railingEnd = railing,
}


return {
name = _("Gitterbruecke gross"),


yearFrom = 1875,
yearTo = 0,


carriers = { "RAIL" , "ROAD"},


speedLimit = 600.0 / 3.6,


pillarLen = 100,


pillarMinDist = 6.0,
pillarMaxDist = 132.0,
pillarTargetDist = 48.0,


cost = 0.0,


materialsToReplace = {


streetPaving = {
name = "street/country_new_medium_paving.mtl",
},
streetLane = {
name = "street/new_medium_lane.mtl",
},
crossingLane = {
name = "street/new_medium_lane.mtl",
},
sidewalkPaving = {
name = "street/new_medium_sidewalk.mtl",
},
sidewalkBorderInner = {
name = "street/new_medium_sidewalk_border_inner.mtl",
size = { 3, 0.6 }
},
},


updateFn = bridgeutil.makeDefaultUpdateFn(config),
}
end

require "tableutil"
local transf = require "transf"
local vec3 = require "vec3"

local bridgeutil = { }

local getMaxSize = function(modelData, models, dim, inverted)
    local result = .0
    
    for i = 1, #models do
        local size = inverted and -modelData[models[i]].min[dim] or modelData[models[i]].max[dim]
        
        if size > result then result = size end
    end
    
    return result
end

local getSizes = function(modelData, models, dim, inverted)
    local result = { }
    
    for i = 1, #models do
        --table.insert(result, (#inverted == 1 and inverted[1] or inverted[i]) and -modelData[models[i]].min[dim] or modelData[models[i]].max[dim])
        table.insert(result, modelData[models[i]].max[dim])
    end

    return result
end 

local getSteps = function(indices, flipped, refSizes, size)
    if #indices == 1 then
        return { { idx = 1, refSize = refSizes[1], flipped = flipped[1] } }
    end

    assert(#indices == 3)
    assert(indices[2] > 0)

    local minSize = .0
    if indices[1] > 0 then minSize = minSize + refSizes[indices[1]] end
    if indices[3] > 0 then minSize = minSize + refSizes[indices[3]] end
    
    local repeatSize = math.max(size - minSize, .0)
    local numRepeat = math.floor(repeatSize / refSizes[indices[2]] + .5)
    
    if indices[1] <= 0 and indices[3] <= 0 and numRepeat == 0 then numRepeat = 1 end -- TODO HACK
    
    minSize = minSize + numRepeat * refSizes[indices[2]]
    
    local scale = size / minSize
    
    local steps = { }
    if indices[1] > 0 then table.insert(steps, { idx = indices[1], refSize = scale * refSizes[indices[1]], flipped = flipped[1] }) end
    for j = 1, numRepeat do table.insert(steps, { idx = indices[2], refSize = scale * refSizes[indices[2]], flipped = flipped[2] }) end
    if indices[3] > 0 then table.insert(steps, { idx = indices[3], refSize = scale * refSizes[indices[3]], flipped = flipped[3] }) end
    
    return steps
end

function bridgeutil.getRailingInterval(params, pillarIndex, before)
    local count = 0
    
    for i = 1, #params.railingIntervals do
        local interval = params.railingIntervals[i]
    
        if before and interval.hasPillar[1] then count = count + 1 end
        if not before and interval.hasPillar[2] then count = count + 1 end
        
        if count == pillarIndex then return interval end
    end
    
    assert(false)
    return -1
end

function bridgeutil.configurePillar(modelData, pillarModels, height, width)
    assert(#pillarModels == 3)

    local result = { }
    
    result.models = pillarModels
    
    result.dim1 = 3
    result.dim2 = 2
    
    result.size1 = height
    result.size2 = width
    
    result.inverted = { false, false, true }
    result.flipped = { }
    
    result.refSizes1 = { }
    result.refSizes2 = { }
    
    result.indices1 = { 1, 2, 3 }
    result.indices2 = { }
    
    for i = 1, #pillarModels do 
        table.insert(result.refSizes1, getMaxSize(modelData, pillarModels[i], result.dim1, result.inverted[i]))
        
        assert(#pillarModels[i] == 1 or #pillarModels[i] == 2 or #pillarModels[i] == 3)
        result.indices2[i] = #pillarModels[i] == 3 and { 1, 2, 3 } or #pillarModels[i] == 2 and { 1, 2, 1 } or { 1 }
        result.flipped[i] = #pillarModels[i] == 3 and { false, false, false } or #pillarModels[i] == 2 and { false, false, true } or { false }
        
        table.insert(result.refSizes2, getSizes(modelData, pillarModels[i], result.dim2, { false, false, false }))
    end
    
    result.min2 = #pillarModels[1] == 1 and .0 or -.5 * width -- TODO HACK
    
    return result
end

function bridgeutil.configureRailing(modelData, interval, railingModels, length, width)
    assert(#railingModels == 3)
    
    local result = { }
    
    result.models = railingModels
    
    result.dim1 = 1
    result.dim2 = 2
    
    result.size1 = length
    result.size2 = width
    
    result.inverted = { false, false, false }
    result.flipped = { }
    
    result.refSizes1 = { }
    result.refSizes2 = { }
    
    local lanes = interval.lanes
            
    local centerY = #lanes % 2 == 0 and .5 * (lanes[#lanes / 2].offset + lanes[#lanes / 2 + 1].offset) or lanes[(#lanes + 1) / 2].offset
    result.min2 = centerY - .5 * width

    local typeRight = lanes[1].type
    local typeLeft = lanes[#lanes].type
    
    local hasCollision = (typeRight > 0 or typeLeft > 0)
    local hasCollModels = #railingModels[1] == 5 or 8 -- TODO HACK 3 side and 2 rep, doubled for flipped
    
    local rightIdx = (typeRight <= 1) and ((hasCollModels and hasCollision) and 2 or 1) or (hasCollModels and 3 or 2)
    local leftIdx = (typeLeft % 2 == 0) and ((hasCollModels and hasCollision) and 2 or 1) or (hasCollModels and 3 or 2)
    local repIdx = hasCollModels and (hasCollision and 5 or 4) or 2
    
    result.indices1 = { interval.hasPillar[1] and 1 or -1, 2, interval.hasPillar[2] and 3 or -1 }
    result.indices2 = { }
    
    for i = 1, #railingModels do 
        table.insert(result.refSizes1, getMaxSize(modelData, railingModels[i], result.dim1, result.inverted[i]))

        local flipOffset = 0
        if #railingModels[i] > 5 then flipOffset = 5 end
    
        result.indices2[i] = { rightIdx, repIdx, leftIdx + flipOffset }
        result.flipped[i] = { false, false, #railingModels[i] <= 5 and true or 1 }
        
        table.insert(result.refSizes2, getSizes(modelData, railingModels[i], result.dim2, {false, false, #railingModels[i] <= 5 and false or true}))
    end
    
    return result
end

function bridgeutil.repeat2D(modelData, config)
    local result = { }

    local steps1 = getSteps(config.indices1, { false, false, false}, config.refSizes1, config.size1)
            
    local pos1 = .0
    for i = 1, #steps1 do
        local rowResult = { }
    
        local idx1 = steps1[i].idx
        local size1 = steps1[i].refSize
        
        local inverted = config.inverted[idx1]
        
        local offset1 = inverted and size1 or .0
        
        local steps2 = getSteps(config.indices2[idx1], config.flipped[idx1], config.refSizes2[idx1], config.size2)
    
        local pos2 = config.min2
        for j = 1, #steps2 do
            local idx2 = steps2[j].idx
            local size2 = steps2[j].refSize
            
            local flipped = steps2[j].flipped and steps2[j].flipped ~= 1
            
            local model = config.models[idx1][idx2]
            
            local size = table.copy(modelData[model].max)
            if inverted then size[config.dim1] = -modelData[model].min[config.dim1] end
            
            local offset2 = (flipped or steps2[j].flipped == 1) and size2 or .0
            
            local scale = { 1.0, 1.0, 1.0 }
            scale[config.dim1] = size[config.dim1] > 0 and size1 / size[config.dim1] or 1
            scale[config.dim2] = (flipped and -1 or 1) * (size[config.dim2] > 0 and size2 / size[config.dim2] or 1)
            
            local pos = { .0, .0, .0 }
            pos[config.dim1] = pos1 + offset1
            pos[config.dim2] = pos2 + offset2
            
            local scaleVec = vec3.new(scale[1], scale[2], scale[3])
            local posVec = vec3.new(pos[1], pos[2], pos[3])
            
            local modelTransf = transf.scaleXYZRotZTransl(scaleVec, .0, posVec)
            
            table.insert(rowResult, { id = model, transf = modelTransf })
            
            pos2 = pos2 + size2
        end
        
        table.insert(result, rowResult)
        
        pos1 = pos1 + size1
    end
    
    return result
end

function bridgeutil.makeDefaultUpdateFn(data)
    return function(params)
        local modelData = params.state.models
        
        local configurePillar = data.configurePillar and data.configurePillar or
            function(modelData, params, i, height, width)
                return bridgeutil.configurePillar(modelData, { data.pillarBase, data.pillarRepeat, data.pillarTop }, height, width)
            end
    
        local result = { }
        result.pillarModels = { }
        result.railingModels = { }
        
        local pillarWidth = (not data.pillarWidth or data.pillarWidth < .0) and params.railingWidth or data.pillarWidth
        
        for i = 1, #params.pillarHeights do
            local pillarConfig = configurePillar(modelData, params, i, params.pillarHeights[i], pillarWidth)
            local pillarResult = bridgeutil.repeat2D(modelData, pillarConfig)
            
            table.insert(result.pillarModels, pillarResult)
        end
        
        local railingModels = { data.railingBegin, data.railingRepeat, data.railingEnd }
        
        for i = 1, #params.railingIntervals do
            local interval = params.railingIntervals[i]
            local railingConfig = bridgeutil.configureRailing(modelData, interval, railingModels, interval.length, params.railingWidth)
            local intervalResult = bridgeutil.repeat2D(modelData, railingConfig)
            
            table.insert(result.railingModels, intervalResult)
        end
        
        return result
    end
end

return bridgeutil