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  • how to count uv area

    先放着,空了再整理。。。。

    fn getModeUvVolumetric mode chang= ----得到UV使用率
    (

    --global facesNumSum = meshop.getnumfaces mode
    local facesUvVerts_Array = #()
    local facesUvVertsPos_Array = #()
    local A_T_S = 0----所有三角形面积
    local uvFaceNum = meshop.getnummapfaces mode chang --得到指定通道UV面数
    local uvVertsPos = #()
    -- meshop.getmapface $ 2 1 --得带指定UV面得UV顶点

    for i in 1 to uvFaceNum do
    (
    append facesUvVerts_Array (meshop.getmapface mode chang i)
    )
    for x in 1 to facesUvVerts_Array.count do
    (
    uvVertsPos = #() --数据还原
    for y in 1 to 3 do
    (
    append uvVertsPos (meshop.getmapvert mode chang (facesUvVerts_Array[x][y]as integer))
    )
    append facesUvVertsPos_Array uvVertsPos
    )
    --facesUvVerts_Array = #() --数据还原

    for i in 1 to facesUvVertsPos_Array.count do -----坐标转换到距离
    (
    uvPos_A = distance facesUvVertsPos_Array[i][1] facesUvVertsPos_Array[i][2]
    uvPos_B = distance facesUvVertsPos_Array[i][1] facesUvVertsPos_Array[i][3]
    uvPos_C = distance facesUvVertsPos_Array[i][3] facesUvVertsPos_Array[i][2]
    facesUvVertsPos_Array[i][1] = uvPos_A
    facesUvVertsPos_Array[i][2] = uvPos_B
    facesUvVertsPos_Array[i][3] = uvPos_C
    )
    for i in 1 to facesUvVertsPos_Array.count do ----三角形面积
    (

    local T_P_A
    local T_P_B
    local T_P_C
    local T_S
    local T_p =0 --三角形周长/2

    for j in 1 to facesUvVertsPos_Array[i].count do ---海伦公式
    (
    T_p = T_p + facesUvVertsPos_Array[i][j]
    )
    T_p = T_p/2 --半周长
    T_P_A = T_p - facesUvVertsPos_Array[i][1]
    T_P_B = T_p - facesUvVertsPos_Array[i][2]
    T_P_C = T_p - facesUvVertsPos_Array[i][3]
    T_S = sqrt (T_p*T_P_A*T_P_B*T_P_C) ---海伦公式

    facesUvVertsPos_Array[i] = T_S
    A_T_S = A_T_S + T_S
    )
    return A_T_S
    --print facesUvVertsPos_Array
    )

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  • 原文地址:https://www.cnblogs.com/guilt/p/4445564.html
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