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Rev | Author | Line No. | Line |
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5486 | leency | 1 | ; Files *.asc routines by Maciej Guba |
2 | ; Thanks to Reverend for integer/float/ascii conversion examples |
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3 | read_asc: |
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4 | mov eax,[fptr] |
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5 | .find_vert: |
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6 | cmp dword[eax],'Vert' |
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7 | je @f |
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8 | inc eax |
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9 | jmp .find_vert |
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10 | @@: |
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11 | add eax,4 |
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12 | cmp dword[eax],'ices' |
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13 | jne .find_vert |
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14 | add eax,3 |
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15 | @@: |
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16 | inc eax |
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17 | cmp byte[eax],'0' ; search end of ascii number of vertices string |
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18 | jb @b |
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19 | cmp byte[eax],'9' |
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20 | ja @b |
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21 | ; eax - start ascii number |
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22 | @@: |
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23 | inc eax |
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24 | cmp byte[eax],'0' |
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25 | jb .convert1 |
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26 | cmp byte[eax],'9' |
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27 | ja .convert1 |
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28 | jmp @b |
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29 | .convert1: |
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30 | dec eax |
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31 | mov ebx,eax |
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32 | push eax |
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33 | call ascii_to_integer |
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8014 | leency | 34 | mov [points_count_var],edx |
5486 | leency | 35 | pop eax |
36 | |||
37 | @@: |
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38 | inc eax |
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39 | cmp dword[eax],'Face' |
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40 | jne @b |
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41 | add eax,3 |
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42 | @@: |
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43 | inc eax |
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44 | cmp byte[eax],'0' |
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45 | jb @b |
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46 | cmp byte[eax],'9' |
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47 | ja @b |
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48 | ; eax - start ascii number |
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49 | @@: |
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50 | inc eax |
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51 | cmp byte[eax],'0' |
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52 | jb .convert2 |
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53 | cmp byte[eax],'9' |
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54 | ja .convert2 |
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55 | jmp @b |
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56 | ; eax - end ascii number |
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57 | .convert2: |
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58 | dec eax |
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59 | mov ebx,eax |
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60 | push eax |
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61 | call ascii_to_integer |
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8014 | leency | 62 | mov [triangles_count_var],edx |
5486 | leency | 63 | pop eax |
64 | |||
65 | @@: |
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66 | inc eax |
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67 | cmp dword[eax],'Vert' |
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68 | jnz @b |
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69 | inc eax |
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70 | |||
71 | mov edi,[points_ptr] |
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72 | xor ebx,ebx |
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73 | .decode_vertices: |
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74 | push ebx |
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75 | @@: |
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76 | inc eax |
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77 | cmp dword[eax],'Vert' |
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78 | jne @b |
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79 | xor ecx,ecx |
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80 | |||
81 | .decode_coord: |
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82 | push ecx |
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83 | @@: |
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84 | inc eax |
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85 | mov dl,byte[eax] |
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86 | cmp dl,byte[XYZpartices+ecx] |
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87 | jne @b |
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88 | @@: |
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89 | inc eax |
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90 | cmp byte[eax],'.' |
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91 | je .readF |
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92 | cmp byte[eax],'-' |
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93 | je .readF |
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94 | cmp byte[eax],'0' |
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95 | jb @b |
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96 | cmp byte[eax],'9' |
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97 | ja @b |
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98 | .readF: ; read float |
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99 | mov esi,eax |
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100 | push eax |
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101 | push ecx |
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102 | |||
103 | call atof ; st0 - desired dword float |
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104 | |||
105 | pop ecx |
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106 | pop eax |
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107 | |||
108 | fstp dword[edi] |
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109 | add edi,4 |
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110 | |||
111 | pop ecx |
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112 | inc ecx |
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113 | cmp ecx,3 |
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114 | jne .decode_coord |
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115 | pop ebx |
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116 | inc ebx |
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8014 | leency | 117 | cmp ebx,[points_count_var] |
5486 | leency | 118 | jne .decode_vertices |
119 | mov dword[edi],-1 |
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120 | |||
121 | |||
122 | |||
123 | mov esi,eax |
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124 | @@: |
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125 | inc esi |
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126 | cmp dword[esi],'Face' |
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127 | jne @b |
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128 | xor edx,edx |
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129 | mov edi,[triangles_ptr] |
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130 | cld |
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131 | .decode_face: |
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132 | |||
133 | push edx |
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134 | @@: |
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135 | inc esi |
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136 | cmp dword[esi],'Face' |
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137 | jne @b |
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138 | @@: |
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139 | inc esi |
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140 | cmp byte[esi],'0' ; face number start |
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141 | jb @b |
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142 | cmp byte[esi],'9' |
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143 | ja @b |
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144 | @@: |
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145 | inc esi |
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146 | cmp byte[esi],'0' |
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147 | jb @f |
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148 | cmp byte[esi],'9' ; face number end |
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149 | ja @f |
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150 | jmp @b |
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151 | @@: |
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152 | xor ecx,ecx |
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153 | .next_vertex_number: |
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154 | |||
155 | push ecx |
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156 | @@: |
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157 | inc esi |
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158 | cmp byte[esi],'0' |
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159 | jb @b |
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160 | cmp byte[esi],'9' |
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161 | ja @b |
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162 | ; eax - start ascii number |
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163 | @@: |
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164 | inc esi |
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165 | cmp byte[esi],'0' |
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166 | jb @f |
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167 | cmp byte[esi],'9' |
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168 | ja @f |
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169 | jmp @b |
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170 | ; eax - end ascii number |
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171 | @@: |
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172 | dec esi |
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173 | mov ebx,esi |
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174 | push esi |
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175 | call ascii_to_integer |
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176 | mov eax,edx |
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177 | |||
8014 | leency | 178 | stosd |
5486 | leency | 179 | pop esi |
8014 | leency | 180 | add esi,4 |
5486 | leency | 181 | |
182 | pop ecx |
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183 | inc ecx |
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184 | cmp ecx,3 |
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185 | jne .next_vertex_number |
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186 | pop edx |
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187 | inc edx |
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8014 | leency | 188 | cmp edx,[triangles_count_var] |
5486 | leency | 189 | jne .decode_face |
190 | mov dword[edi],-1 ;dword[triangles+ebx+2],-1 ; end mark |
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191 | mov eax,1 ;-> mark if ok |
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192 | ret |
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193 | |||
194 | ascii_to_integer: |
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195 | ; in --- [ebx] -> end of ascii string |
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196 | ; out -- edx -> desired number |
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197 | xor edx,edx |
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198 | xor ecx,ecx |
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199 | .again: |
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200 | movzx eax,byte[ebx] |
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201 | sub al,'0' |
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202 | cwde |
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203 | push edx |
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204 | mul dword[convert_muler+ecx] |
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205 | pop edx |
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206 | add edx,eax |
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207 | dec ebx |
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208 | cmp byte[ebx],'0' |
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209 | jb .end |
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210 | cmp byte[ebx],'9' |
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211 | ja .end |
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212 | add ecx,4 |
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213 | jmp .again |
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214 | @@: |
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215 | |||
216 | .end: |
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217 | ret |
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218 | |||
219 | ;=============================================================================== |
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220 | ; ASCII to float conversion procedure |
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221 | ; |
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222 | ; input: |
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223 | ; esi - pointer to string |
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224 | ; |
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225 | ; output: |
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226 | ; st0 - number changed into float |
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227 | ; |
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228 | ;=============================================================================== |
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229 | |||
230 | atof: |
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231 | .string equ ebp-4 |
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232 | |||
233 | push ebp |
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234 | mov ebp,esp |
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235 | sub esp,32 |
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236 | push eax ecx esi |
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237 | mov [.string],esi |
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238 | fninit |
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239 | fldz |
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240 | fldz |
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241 | |||
242 | cld |
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243 | cmp byte [esi], '-' |
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244 | jnz @F |
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245 | inc esi |
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246 | @@: |
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247 | xor eax, eax |
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248 | align 4 |
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249 | .loop.integer_part: |
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250 | lodsb |
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251 | cmp al, '.' |
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252 | jz .mantisa |
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253 | cmp al,'0' |
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254 | jb .exit |
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255 | cmp al,'9' |
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256 | ja .exit |
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257 | fimul [i10] |
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258 | sub al, '0' |
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259 | push eax |
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260 | fiadd dword [esp] |
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261 | add esp, 4 |
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262 | jmp .loop.integer_part |
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263 | |||
264 | .mantisa: |
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265 | xor ecx, ecx |
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266 | xor eax, eax |
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267 | cld |
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268 | fxch st1 |
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269 | @@: |
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270 | |||
271 | lodsb |
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272 | cmp al,'0' |
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273 | jb .exit |
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274 | cmp al,'9' |
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275 | ja .exit |
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276 | cmp ecx,7*4 |
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277 | je .exit ; max 7 digits in mantisa |
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278 | sub al,'0' |
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279 | push eax |
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280 | fild dword[esp] |
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281 | fidiv dword[convert_muler+4+ecx] |
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282 | faddp |
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283 | add esp,4 |
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284 | add ecx,4 |
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285 | jmp @b |
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286 | .exit: |
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287 | faddp |
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288 | |||
289 | mov eax, [.string] |
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290 | cmp byte [eax], '-' |
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291 | jnz @F |
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292 | fchs |
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293 | @@: |
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294 | cld |
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295 | stc ; always returns no error |
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296 | pop esi ecx eax |
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297 | mov esp,ebp |
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298 | pop ebp |
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299 | ret |
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300 | |||
301 | |||
302 | itoa: ; unsigned dword integer to ascii procedure |
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303 | ; in eax - variable |
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304 | ; esi - Pointer to ascii string |
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305 | ; out esi - desired ascii string |
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306 | ; edi - end of ascii string - ptr to memory |
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307 | .temp_string equ dword[ebp-36] |
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308 | .ptr equ dword[ebp-40] |
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309 | .var equ dword[ebp-44] |
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310 | push ecx |
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311 | push ebp |
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312 | mov ebp,esp |
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313 | sub esp,64 |
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314 | mov .var,eax |
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315 | mov eax,-1 |
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316 | lea edi,.temp_string |
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317 | cld |
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318 | mov ecx,9 |
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319 | rep stosd ; make floor |
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320 | |||
321 | |||
322 | mov .ptr,esi |
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323 | lea edi,.temp_string |
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324 | add edi,34 |
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325 | std |
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326 | xor eax,eax |
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327 | stosb ; mark begin |
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328 | mov eax,.var |
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329 | mov esi,10 |
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330 | @@: |
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331 | xor edx,edx |
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332 | div esi |
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333 | xchg eax,edx |
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334 | add al,'0' |
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335 | stosb |
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336 | xchg eax,edx |
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337 | or eax,eax |
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338 | jnz @b |
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339 | stosb ; mark end |
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340 | |||
341 | lea esi,.temp_string |
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342 | cld |
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343 | @@: |
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344 | lodsb |
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345 | or al,al |
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346 | jnz @b |
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347 | |||
348 | mov edi,.ptr |
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349 | @@: |
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350 | lodsb |
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351 | stosb |
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352 | or al,al |
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353 | jnz @b |
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354 | |||
355 | mov esp,ebp |
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356 | pop ebp |
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357 | pop ecx |
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358 | ret |
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359 | if 1 |
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360 | ftoa_mac: |
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361 | ; in : esi - pointer to dword float |
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362 | ; edi - pointer to ascii string |
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363 | .ptr_f equ dword[ebp-4] |
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364 | .sign equ dword[ebp-8] ; 0 -> less than zero, 1 - otherwise |
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365 | .ptr_ascii equ dword[ebp-12] |
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366 | .integer equ dword[ebp-20] |
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367 | .fraction equ dword[ebp-28] |
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368 | .status_orginal equ word[ebp-32] |
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369 | .status_changed equ word[ebp-34] |
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370 | push ecx |
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371 | push ebp |
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372 | mov ebp,esp |
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373 | sub esp,64 |
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374 | fninit |
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375 | fnstcw .status_orginal |
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376 | mov ax, .status_orginal |
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377 | or ax, 0000110000000000b |
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378 | mov .status_changed, ax |
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379 | fldcw .status_changed |
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380 | ; -------------------------------- |
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381 | ; check if signed |
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382 | xor eax, eax |
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383 | fld dword[esi] |
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384 | fst .sign |
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385 | test .sign, 80000000h |
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386 | setz al |
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387 | mov .sign, eax |
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388 | |||
389 | mov .ptr_f,esi |
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390 | mov .ptr_ascii,edi |
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391 | fabs |
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392 | fld st0 |
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393 | frndint |
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394 | fist .integer |
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395 | fsubp st1, st0 |
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396 | |||
397 | mov eax,.integer |
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398 | mov esi,.ptr_ascii |
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399 | call itoa |
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400 | ; edi -> ptr to end of ascii string |
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401 | dec edi |
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402 | mov al,'.' |
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403 | stosb |
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404 | |||
405 | mov ecx, 6 ; max 6 digits in fraction part |
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406 | .loop: |
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407 | fimul [i10] |
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408 | fld st0 |
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409 | frndint |
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410 | fist .fraction |
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411 | fsubp st1, st0 |
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412 | mov esi,edi |
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413 | mov eax,.fraction |
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414 | add al,'0' |
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415 | stosb |
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416 | ftst |
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417 | fnstsw ax |
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418 | test ax, 0100000000000000b |
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419 | jz @F |
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420 | test ax, 0000010100000000b |
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421 | jz .finish |
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422 | @@: |
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423 | loop .loop |
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424 | if 0 |
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425 | fldcw .status_orginal |
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426 | fimul [i10] |
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427 | fist .fraction |
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428 | ; mov esi,edi |
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429 | mov eax,.fraction |
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430 | add al,'0' |
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431 | stosb |
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432 | ; call itoa |
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433 | ; -------------------------------- |
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434 | ; restore previous values |
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435 | .finish: |
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436 | ; fstp st0 |
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437 | ffree st |
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438 | mov eax,.fraction |
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439 | mov esi,edi |
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440 | ; call itoa |
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441 | |||
442 | add al,'0' |
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443 | stosb |
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444 | end if |
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445 | .finish: |
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446 | ffree st |
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447 | cmp .sign,0 |
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448 | jnz @f |
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449 | mov esi,.ptr_ascii |
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450 | dec esi |
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451 | mov byte[esi],'-' |
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452 | @@: |
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453 | mov esp,ebp |
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454 | pop ebp |
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455 | pop ecx |
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456 | |||
457 | ret |
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458 | end if |
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459 | if 0 |
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460 | ;=============================================================================== |
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461 | ; float to ASCII conversion procedure |
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462 | ; |
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463 | ; input: |
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464 | ; buffer - pointer to memory where output will be saved |
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465 | ; precision - number of digits after dot |
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466 | ; |
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467 | ; output: |
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468 | ; no immediate output |
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469 | ; |
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470 | ; notes: |
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471 | ; separate integer and mantisa part with dot '.' |
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472 | ; so GOOD 123.456 |
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473 | ; WRONG 123,456 |
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474 | ; |
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475 | ; coded by Reverend // HTB + RAG |
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476 | ;=============================================================================== |
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477 | proc ftoa buffer, precision |
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478 | locals |
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479 | status_original dw ? |
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480 | status_changed dw ? |
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481 | integer dd ? |
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482 | mantisa dd ? |
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483 | signed dd ? |
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484 | endl |
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485 | push eax ecx;edi ecx |
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486 | ; -------------------------------- |
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487 | ; set correct precision |
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488 | mov eax, [precision] |
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489 | cmp eax, 51 |
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490 | jb @F |
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491 | mov eax, 51 |
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492 | @@: |
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493 | mov [precision], eax |
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494 | ; -------------------------------- |
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495 | ; change control wortd of fpu to prevent rounding |
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496 | fnstcw [status_original] |
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497 | mov ax, [status_original] |
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498 | or ax, 0000110000000000b |
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499 | mov [status_changed], ax |
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500 | fldcw [status_changed] |
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501 | ; -------------------------------- |
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502 | ; check if signed |
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503 | xor eax, eax |
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504 | fst [signed] |
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505 | test [signed], 80000000h |
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506 | setnz al |
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507 | mov [signed], eax |
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508 | ; -------------------------------- |
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509 | ; cut integer and mantisa separately |
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510 | fld st0 |
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511 | fld st0 ; st0 = x, st1 = x |
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512 | frndint |
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513 | fist [integer] ; st0 = x, st1 = x |
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514 | fabs |
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515 | fsubp st1, st0 ; st0 = mantisa(x) |
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516 | ; -------------------------------- |
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517 | ; save integer part in buffer |
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518 | ; mov edi, [buffer] |
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519 | mov esi,[buffer] |
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520 | ; push [signed] |
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521 | ; push edi |
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522 | ; push 10 |
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523 | ; push [integer] |
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524 | mov eax,[integer] |
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525 | call itoa |
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526 | ; add edi, eax |
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527 | mov al, '.' |
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528 | stosb |
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529 | mov esi,edi |
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530 | ; -------------------------------- |
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531 | ; save mantisa part in buffer |
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532 | mov ecx, [precision] |
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533 | dec ecx |
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534 | .loop: |
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535 | fimul [i10] |
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536 | fld st0 |
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537 | frndint |
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538 | fist [mantisa] |
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539 | fsubp st1, st0 |
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540 | ; push 0 |
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541 | ; push edi |
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542 | ; push 10 |
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543 | ; push [mantisa] |
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544 | mov esi,edi |
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545 | mov eax,[mantisa] |
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546 | call itoa |
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547 | ; add edi, eax |
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548 | ftst |
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549 | fnstsw ax |
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550 | test ax, 0100000000000000b |
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551 | jz @F |
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552 | test ax, 0000010100000000b |
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553 | jz .finish |
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554 | @@: |
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555 | loop .loop |
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556 | fldcw [status_original] |
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557 | fimul [i10] |
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558 | fist [mantisa] |
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559 | ; push 0 |
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560 | ; push edi |
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561 | ; push 10 |
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562 | ; push [mantisa] |
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563 | mov esi,edi |
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564 | mov eax,[mantisa] |
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565 | call itoa |
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566 | ; -------------------------------- |
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567 | ; restore previous values |
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568 | .finish: |
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569 | fstp st0 |
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570 | cmp [signed],1 |
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571 | jnz @f |
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572 | mov byte[buffer],'-' |
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573 | @@: |
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574 | stc |
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575 | pop ecx eax ;edi eax |
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576 | ret |
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577 | endp |
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578 | end if |
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579 | if 0 |
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580 | write_asc: |
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581 | .counter equ dword[ebp-4] |
||
582 | push ebp |
||
583 | mov ebp,esp |
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584 | sub esp,64 |
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585 | fninit |
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586 | mov edi,asc_file_buffer |
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587 | mov esi,asc_main_header |
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588 | cld |
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589 | @@: |
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590 | lodsb |
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591 | cmp al,1 |
||
592 | jz @f |
||
593 | stosb |
||
594 | jmp @b |
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595 | @@: |
||
596 | |||
597 | mov esi,asc_info_header |
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598 | @@: |
||
599 | lodsb |
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600 | cmp al,1 |
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601 | jz @f |
||
602 | stosb |
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603 | jmp @b |
||
604 | @@: |
||
605 | push esi ; -> position in header info |
||
606 | movzx eax,[points_count_var] |
||
607 | mov esi,edi |
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608 | call itoa ; unsigned dword integer to ascii procedure |
||
609 | pop esi |
||
610 | inc esi |
||
611 | @@: |
||
612 | lodsb |
||
613 | cmp al,1 |
||
614 | jz @f |
||
615 | stosb |
||
616 | jmp @b |
||
617 | @@: |
||
618 | push esi |
||
619 | movzx eax,[triangles_count_var] |
||
620 | mov esi,edi |
||
621 | call itoa |
||
622 | pop esi |
||
623 | inc esi |
||
624 | @@: |
||
625 | lodsb |
||
626 | cmp al,1 |
||
627 | jz @f |
||
628 | stosb |
||
629 | jmp @b |
||
630 | @@: |
||
631 | ;============================================================= |
||
632 | ;================vertex list parser=========================== |
||
633 | ;============================================================= |
||
634 | |||
635 | xor ecx,ecx |
||
636 | .again_vertex: |
||
637 | push ecx |
||
638 | mov esi,asc_one_vertex_formula |
||
639 | @@: |
||
640 | lodsb |
||
641 | cmp al,1 |
||
642 | jz @f |
||
643 | stosb |
||
644 | jmp @b |
||
645 | @@: |
||
646 | mov eax,ecx |
||
647 | ; push ecx |
||
648 | push esi |
||
649 | mov esi,edi |
||
650 | call itoa |
||
651 | pop esi |
||
652 | ; pop ecx |
||
653 | inc esi |
||
654 | xor ebx,ebx |
||
655 | .next_vertex_coef: |
||
656 | push ebx |
||
657 | @@: |
||
658 | lodsb |
||
659 | cmp al,1 |
||
660 | jz @f |
||
661 | stosb |
||
662 | jmp @b |
||
663 | @@: |
||
664 | ; int3 |
||
665 | push esi |
||
666 | lea esi,[ecx*3] |
||
667 | shl esi,2 |
||
668 | add esi,points_r |
||
669 | add esi,ebx |
||
670 | ; int3 |
||
671 | call ftoa_mac |
||
672 | ; std |
||
673 | ; fld dword[esi] |
||
674 | |||
675 | |||
676 | ; pushad |
||
677 | ; stdcall ftoa, edi, 30 |
||
678 | ; popad |
||
679 | ; add edi,20 |
||
680 | |||
681 | |||
682 | pop esi |
||
683 | pop ebx |
||
684 | add ebx,4 |
||
685 | cmp ebx,12 |
||
686 | jnz .next_vertex_coef |
||
687 | @@: |
||
688 | lodsb |
||
689 | cmp al,1 |
||
690 | jz @f |
||
691 | stosb |
||
692 | jmp @b |
||
693 | @@: |
||
694 | pop ecx |
||
695 | inc ecx |
||
696 | cmp cx,[points_count_var] |
||
697 | jnz .again_vertex |
||
698 | |||
699 | |||
700 | ; mov edi,[temp_edi] |
||
701 | |||
702 | |||
703 | mov esi,asc_face_list_header |
||
704 | @@: |
||
705 | lodsb |
||
706 | cmp al,1 ; all face header |
||
707 | jz @f |
||
708 | stosb |
||
709 | jmp @b |
||
710 | @@: |
||
711 | ;===================================== |
||
712 | ; ==============face list parser====== |
||
713 | ;===================================== |
||
714 | xor ecx,ecx |
||
715 | .again_face: |
||
716 | push ecx |
||
717 | mov .counter,ecx |
||
718 | mov esi,asc_one_face_formula |
||
719 | @@: |
||
720 | lodsb |
||
721 | cmp al,1 |
||
722 | jz @f |
||
723 | stosb |
||
724 | jmp @b |
||
725 | @@: |
||
726 | mov eax,ecx |
||
727 | push esi |
||
728 | mov esi,edi |
||
729 | call itoa |
||
730 | pop esi |
||
731 | inc esi |
||
732 | @@: |
||
733 | lodsb |
||
734 | cmp al,1 |
||
735 | jz @f |
||
736 | stosb |
||
737 | jmp @b |
||
738 | @@: |
||
739 | |||
740 | xor ebx,ebx |
||
741 | .next_face_index: |
||
742 | push ebx |
||
743 | mov ecx,.counter |
||
744 | lea ecx,[ecx*3] |
||
745 | add ecx,ecx |
||
746 | movzx eax,word[triangles+ecx+ebx] |
||
747 | push esi |
||
748 | mov esi,edi |
||
749 | call itoa |
||
750 | pop esi |
||
751 | @@: |
||
752 | lodsb |
||
753 | cmp al,1 |
||
754 | jz @f |
||
755 | stosb |
||
756 | jmp @b |
||
757 | @@: |
||
758 | pop ebx |
||
759 | add ebx,2 |
||
760 | cmp ebx,6 |
||
761 | jnz .next_face_index |
||
762 | |||
763 | ; push esi |
||
764 | mov esi,asc_material |
||
765 | @@: |
||
766 | lodsb |
||
767 | cmp al,1 |
||
768 | jz @f |
||
769 | stosb |
||
770 | jmp @b |
||
771 | @@: |
||
772 | ; pop esi |
||
773 | |||
774 | pop ecx |
||
775 | inc ecx |
||
776 | cmp cx,[triangles_count_var] |
||
777 | jnz .again_face |
||
778 | |||
779 | ; write file |
||
780 | sub edi,asc_file_buffer |
||
781 | ; mov [file_buffer+2],edi |
||
782 | mov [FileSize],edi |
||
783 | |||
784 | invoke CreateFile,asc_file_name, GENERIC_WRITE, 0, 0,CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0 |
||
785 | mov [hfile],eax |
||
786 | invoke WriteFile,eax,asc_file_buffer,[FileSize], byteswritten, 0 |
||
787 | invoke CloseHandle,[hfile] |
||
788 | |||
789 | mov esp,ebp |
||
790 | pop ebp |
||
791 | ret |
||
792 | end if |
||
793 | if 0 |
||
794 | asc_file_buffer: |
||
795 | rd 65536 |
||
796 | ascii_string rb 50 |
||
797 | ftoa_muler dd 1000000000 |
||
798 | file_size dd ? |
||
799 | file_handle dd ? |
||
800 | end if |
||
801 | |||
802 | if 0 |
||
803 | convert_muler: |
||
804 | dd 1, 10, 100, 1000, 10000 |
||
805 | XYZpartices: |
||
806 | db 'X','Y','Z' |
||
807 | i10 dw 10 |
||
808 | points_count_var dd ? |
||
809 | triangles_count_var dd ? |
||
810 | points rb 100 |
||
811 | triangles rb 100 |
||
812 | asc_file: |
||
813 | |||
814 | file "2TORUS.ASC" |
||
815 | end if |