mirror of
https://github.com/Ttanasart-pt/Pixel-Composer.git
synced 2024-09-21 21:01:20 +02:00
90 lines
2.5 KiB
Plaintext
90 lines
2.5 KiB
Plaintext
function __3dTerrain() : __3dObject() constructor {
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VF = global.VF_POS_NORM_TEX_COL;
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render_type = pr_trianglelist;
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self.subdivision = 4;
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heights = array_create((subdivision + 1) * (subdivision + 1));
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static initModel = function() {
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var _hs = 1 / 2;
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var _vt = array_create(3 * 2 * subdivision * subdivision);
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var _in = 0;
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var amo_ch = (subdivision + 1) * (subdivision + 1);
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var hs = array_length(heights) == amo_ch;
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for( var i = 0; i < subdivision; i++ )
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for( var j = 0; j < subdivision; j++ ) {
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var u0 = (i + 0) / subdivision;
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var u1 = (i + 1) / subdivision;
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var v0 = (j + 0) / subdivision;
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var v1 = (j + 1) / subdivision;
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var x0 = -0.5 + u0;
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var x1 = -0.5 + u1;
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var y0 = -0.5 + v0;
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var y1 = -0.5 + v1;
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var _i0 = j * (subdivision + 1) + i;
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var _i1 = j * (subdivision + 1) + i + 1;
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var _i2 = (j + 1) * (subdivision + 1) + i;
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var _i3 = (j + 1) * (subdivision + 1) + i + 1;
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var _h0 = hs? heights[_i0] : 0;
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var _h1 = hs? heights[_i1] : 0;
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var _h2 = hs? heights[_i2] : 0;
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var _h3 = hs? heights[_i3] : 0;
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var _n = new __vec3(x1 - x0, y0 - y0, _h1 - _h0)
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.cross(new __vec3(x0 - x0, y1 - y0, _h2 - _h0))
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.normalize();
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_vt[_in + 0] = new __vertex(x0, y0, _h0).setNormal(_n.x, _n.y, _n.z).setUV(u0, v0);
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_vt[_in + 1] = new __vertex(x1, y1, _h3).setNormal(_n.x, _n.y, _n.z).setUV(u1, v1);
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_vt[_in + 2] = new __vertex(x1, y0, _h1).setNormal(_n.x, _n.y, _n.z).setUV(u1, v0);
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_vt[_in + 3] = new __vertex(x0, y0, _h0).setNormal(_n.x, _n.y, _n.z).setUV(u0, v0);
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_vt[_in + 4] = new __vertex(x0, y1, _h2).setNormal(_n.x, _n.y, _n.z).setUV(u0, v1);
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_vt[_in + 5] = new __vertex(x1, y1, _h3).setNormal(_n.x, _n.y, _n.z).setUV(u1, v1);
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_in += 6;
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}
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vertex = [ _vt ];
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VB = build();
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} initModel();
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static updateHeight = function(_h) {
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heights = _h;
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var _in = 0;
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var _vt = vertex[0];
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for( var i = 0; i < subdivision; i++ )
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for( var j = 0; j < subdivision; j++ ) {
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var _i0 = j * (subdivision + 1) + i;
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var _i1 = j * (subdivision + 1) + i + 1;
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var _i2 = (j + 1) * (subdivision + 1) + i;
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var _i3 = (j + 1) * (subdivision + 1) + i + 1;
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var _h0 = heights[_i0];
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var _h1 = heights[_i1];
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var _h2 = heights[_i2];
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var _h3 = heights[_i3];
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_vt[_in + 0].z = _h0;
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_vt[_in + 1].z = _h3;
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_vt[_in + 2].z = _h1;
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_vt[_in + 3].z = _h0;
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_vt[_in + 4].z = _h2;
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_vt[_in + 5].z = _h3;
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_in += 6;
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}
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VB = build();
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}
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onParameterUpdate = initModel;
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} |