美好的一天，所有！ ：）
在过去的一个月里，我一直致力于一次性在1个函数中返回2个或更多THREE.js材料的函数。我遇到了一个小问题。出于某种原因，我无法使用此函数返回MeshBasicMaterial对象以及MeshLambertMaterial数据对象。我知道我的代码是正确的，因为我已经超过40次查找错误。
这里是整个代码：
/**
* A function for converting hex <-> dec w/o loss of precision.
*
* The problem is that parseInt("0x12345...") isn't precise enough to convert
* 64-bit integers correctly.
*
* Internally, this uses arrays to encode decimal digits starting with the least
* significant:
* 8 = [8]
* 16 = [6, 1]
* 1024 = [4, 2, 0, 1]
*/
// Adds two arrays for the given base (10 or 16), returning the result.
// This turns out to be the only "primitive" operation we need.
function add(x, y, base)
{
var z = [];
var n = Math.max(x.length, y.length);
var carry = 0;
var i = 0;
while (i < n || carry)
{
var xi = i < x.length ? x[i] : 0;
var yi = i < y.length ? y[i] : 0;
var zi = carry + xi + yi;
z.push(zi % base);
carry = Math.floor(zi / base);
i++;
}
return z;
}
// Returns a*x, where x is an array of decimal digits and a is an ordinary
// JavaScript number. base is the number base of the array x.
function multiplyByNumber(num, x, base)
{
if (num < 0) return null;
if (num == 0) return [];
var result = [];
var power = x;
while (true)
{
if (num & 1)
{
result = add(result, power, base);
}
num = num >> 1;
if (num === 0) break;
power = add(power, power, base);
}
return result;
}
function parseToDigitsArray(str, base)
{
var digits = str.split('');
var ary = [];
for (var i = digits.length - 1; i >= 0; i--)
{
var n = parseInt(digits[i], base);
if (isNaN(n)) return null;
ary.push(n);
}
return ary;
}
function convertBase(str, fromBase, toBase)
{
var digits = parseToDigitsArray(str, fromBase);
if (digits === null) return null;
var outArray = [];
var power = [1];
for (var i = 0; i < digits.length; i++)
{
// invariant: at this point, fromBase^i = power
if (digits[i])
{
outArray = add(outArray, multiplyByNumber(digits[i], power, toBase), toBase);
}
power = multiplyByNumber(fromBase, power, toBase);
}
var out = '';
for (var i = outArray.length - 1; i >= 0; i--)
{
out += outArray[i].toString(toBase);
}
return out;
}
function decToHex(decStr) {
var hex = convertBase(decStr, 10, 16);
return hex ? '0x' + hex : null;
}
function hexToDec(hexStr) {
if (hexStr.substring(0, 2) === '0x') hexStr = hexStr.substring(2);
hexStr = hexStr.toLowerCase();
return convertBase(hexStr, 16, 10);
}
function instr(str, val)
{
if(typeof(str) === 'string')
{
str = str.toString(str);
val = val.toString(val);
in_str = str.indexOf(val);
return in_str;
}
else
{
api_messagebox('Please use a string!');
}
return false;
}
function Get_RGBA(hexVal, getwhich)
{
hexVal = hexVal || '';
getwhich = getwhich || 0;
var commaSeperated = 0;
//if(typeof(hexVal) === 'string')
//{
// Removes the first character from the input string
if(hexVal.length === 8) { hexVal = hexVal.substring(1, hexVal.length); }
if(hexVal.length === 10) { hexVal = hexVal.substring(0, hexVal.length); }
// Now let's separate the pairs by a comma
for (var i = 0; i <= hexVal.length; i++)
{
// Iterate through each char of hexVal
// Copy each char of hexVal to commaSeperated
commaSeperated += hexVal.charAt(i);
// After each pair of characters add a comma, unless this
// is the last char
commaSeperated += (i % 2 == 1 && i != (hexVal.length - 1)) ? ',' : '';
}
// Lets now remove the 0x
if(instr(commaSeperated, '0x'))
{
commaSeperated = commaSeperated.substr(4);
}
if(instr(commaSeperated, ','))
{
// Lets now remove all "," 's
commaSeperated = commaSeperated.replace(/,/g, '');
if( getwhich < 0 ) { getwhich = 0; }
if( getwhich > 5 ) { getwhich = 5; }
alpha = [];
red = [];
green = [];
blue = [];
allcol = [];
sixcol = [];
alpha[0] = commaSeperated[0]+commaSeperated[1];
red[0] = commaSeperated[2]+commaSeperated[3];
green[0] = commaSeperated[4]+commaSeperated[5];
blue[0] = commaSeperated[6]+commaSeperated[7];
allcol[0] = alpha[0]+red[0]+green[0]+blue[0];
sixcol[0] = red[0]+green[0]+blue[0];
if( getwhich === 0 ) { fi_string = alpha[0]; }
if( getwhich === 1 ) { fi_string = red[0]; }
if( getwhich === 2 ) { fi_string = green[0]; }
if( getwhich === 3 ) { fi_string = blue[0]; }
if( getwhich === 4 ) { fi_string = allcol[0]; }
if( getwhich === 5 ) { fi_string = sixcol[0]; }
if( getwhich === 4 && fi_string.length != 10 || fi_string.length != 9 ) { getwhich = 5; }
if( getwhich === 5 && fi_string.length != 8 || fi_string.length != 7 ) { getwhich = 4; }
// Split the commaSeperated string by commas and return the array
return fi_string.toString();
}
//}
}
function isArray(myArray)
{
return myArray.constructor.toString();
//myArray.constructor.toString().indexOf("Array") > -1;
}
//EntityMaterial(0, 0, 0xFF44CFFC, 1, 0xFF000000, 4, 4, 0, 1.0, 0.8, "LambertBasicMaterial", 1)
function EntityMaterial(ptex, side, color, wire, wirecolor, col_type, col_wire_type, shading, transparent, opacity, mat_type, overdraw)
{
ptex = ptex || 0;
side = side || 0;
color = color || 0xFF006400;
wire = wire || 0;
wirecolor = wirecolor || 0xFF006400;
col_type = col_type || 4;
col_wire_type = col_wire_type || 4;
shading = shading || false;
transparent = transparent || 0.0;
opacity = opacity || 1.0;
mat_type = mat_type || "BasicMaterial";
overdraw = overdraw || true;
color = decToHex(color.toString());
wirecolor = decToHex(wirecolor.toString());
var gRGBA1 = Get_RGBA(color, col_type);
var gRGBA2 = Get_RGBA(wirecolor, col_wire_type);
var mat = 0;
if(mat_type === 'BasicMaterial')
{
this.materials = new THREE.MeshBasicMaterial
(
{
color: parseInt(gRGBA1, 16)
}
)
}
else if(mat_type === 'LambertMaterial')
{
this.materials = new THREE.MeshLambertMaterial
(
{
color: parseInt(gRGBA2, 16),
opacity: opacity,
wireframe: wire,
transparent: transparent
}
)
}
else if(mat_type === 'LambertBasicMaterial')
{
//new empty array.. could also be written as this.materials = new Array();
this.materials = [];
var mats = this.materials;
var basicMat = new THREE.MeshBasicMaterial( { color: parseInt(gRGBA1, 16) } );
var lambertMat = new THREE.MeshLambertMaterial( { color: parseInt(gRGBA2, 16), opacity: opacity, wireframe: wire, transparent: transparent } );
mats.push(basicMat);
mats.push(lambertMat);
api_messagebox(mats);
return mats;
}
}
非常感谢你！
此致，
〜Mythros
答案 0 :(得分：0)
是的，我终于开始尝试了，这对我来说都很顺利。 为了确保我们在环境中没有任何差异，请查看我制作的小提琴，并告诉我它是否符合预期，或者如果您有任何其他问题需要帮助：
小变化：
注释掉了api_messagebox(mats)
因为它未定义。 添加了大量日志语句，请查看Web控制台。
我通过使用THree.js的Color对象修复了颜色问题，如下所示：
var color = new THREE.Color("rgb(0,0,255)");
但是你可能会在某个地方这样做，因为你调用的GET_RGBA函数似乎从你给我的代码中遗漏了。
至于使它成为wiremesh，我检查了Lambert对象，它确实设置了wiremesh = 1。
确保您传递的wire var实际设置为true，我在此更新的fiddle