2025-01-22 16:18:30 +01:00
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def inst_pos(con, vert):
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if con.is_elem('irot'):
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# http://www.euclideanspace.com/maths/geometry/rotations/conversions/eulerToMatrix/index.htm
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vert.write('float srotx = sin(irot.x);')
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vert.write('float crotx = cos(irot.x);')
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vert.write('float sroty = sin(irot.y);')
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vert.write('float croty = cos(irot.y);')
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vert.write('float srotz = sin(irot.z);')
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vert.write('float crotz = cos(irot.z);')
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vert.write('mat3 mirot = mat3(')
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2026-09-04 10:46:13 -07:00
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if con.material.lnx_instanced_rot_type == 'Local':
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vert.write(' croty * crotz, srotz, -sroty * crotz,')
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vert.write(' -croty * srotz * crotx + sroty * srotx, crotz * crotx, sroty * srotz * crotx + croty * srotx,')
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vert.write(' croty * srotz * srotx + sroty * crotx, -crotz * srotx, -sroty * srotz * srotx + croty * crotx')
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else:
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vert.write(' croty * crotz, croty * srotz, -sroty,')
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vert.write(' srotx * sroty * crotz - crotx * srotz, srotx * sroty * srotz + crotx * crotz, srotx * croty,')
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vert.write(' crotx * sroty * crotz + srotx * srotz, crotx * sroty * srotz - srotx * crotz, crotx * croty')
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2025-01-22 16:18:30 +01:00
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vert.write(');')
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vert.write('spos.xyz = mirot * spos.xyz;')
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if (con.data['name'] == 'mesh' or con.data['name'] == 'translucent' or con.data['name'] == 'refraction') and vert.contains('wnormal'):
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vert.write('wnormal = normalize(N * mirot * vec3(nor.xy, pos.w));')
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if con.is_elem('iscl'):
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vert.write('spos.xyz *= iscl;')
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vert.write('spos.xyz += ipos;')
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