/// <summary>
/// 计算叶片面积（Unity单位）
/// </summary>
private double ComputeLeafArea(GameObject meshModel)
{
Texture2D texture = GameObjectOperation.GetTexture(meshModel.transform.GetChild(0).gameObject) as Texture2D;
VisualPixelCount = 0;
PixelCount = texture.width * texture.height; //总像素个数
//统计非透明像素个数
for (int x = 0; x < texture.width; x++)
{
for (int y = 0; y < texture.height; y++)
{
if (texture.GetPixel(x, y).a > 0)
{
VisualPixelCount++;
}
}
}
VisibilityRatio = VisualPixelCount * 1.0f / PixelCount;
UniformMeshArea = GameObjectOperation.GetOrganArea(meshModel.transform.GetChild(0).gameObject) *
MaizeParams.SCALE * MaizeParams.SCALE; //㎡
//获取该模型的面积，并乘以非透明像素所占百分比即得叶片面积
return(UniformMeshArea * VisibilityRatio);
}
/// <summary>
/// 计算面积
/// </summary>
private void ComputeArea(GameObject _Object)
{
/*
* 计算模型的面积和叶面积
* 用于后续辐射量的计算已经病虫害模拟等
* 其中 MaizeParams.SCALE 将计算出的模型面积的单位从Unity中一单位转换成m
*/
m_MeshArea = GameObjectOperation.GetOrganArea(_Object) * MaizeParams.SCALE * MaizeParams.SCALE;
m_LeafArea_Uninsected = m_MeshArea * VisibilityRatio;
}