Rev 180 | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
180 | heavyiron | 1 | ; mov [pointer_to_screen],eax |
2 | ; mov [output_array],ebx |
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3 | ; mov [screen_size_x],ecx |
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4 | ;setpixel (pixel_x,pixel_y) |
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5 | setpixel: |
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6 | |||
7 | mov ecx,[output_array] |
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8 | mov eax,[pixel_y] |
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9 | mov ebx,[screen_size_x] |
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10 | imul eax,ebx |
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11 | add eax,[pixel_x] |
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12 | lea eax,[eax+eax*2] |
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13 | add eax,[pointer_to_screen] |
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14 | mov [ecx],eax |
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15 | add [output_array],4 |
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16 | ret |
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17 | ; procedure <<<<< |
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18 | ; IN |
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19 | ; eax - pointer to picture |
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20 | ; ebx - picture size x |
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21 | ; ecx - color of pixel |
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22 | ; esi - x coordinat of pixel |
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23 | ; edi - y coordinat of pixel |
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24 | ; OUT |
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25 | ; not returned value |
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26 | PutPixel: |
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27 | |||
28 | imul ebx,edi |
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29 | add ebx,esi |
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30 | lea ebx,[ebx+ebx*2] |
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31 | add eax,ebx |
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32 | mov ebx,ecx |
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33 | shr ebx,16 |
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34 | mov [eax],cx |
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35 | mov [eax+2],bl |
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36 | ret |
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37 | ; function <<<<< |
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38 | ; IN |
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39 | ; eax - pointer to picture |
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40 | ; ebx - picture size x |
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41 | ; esi - x coordinat of pixel |
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42 | ; edi - y coordinat of pixel |
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43 | ; OUT |
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44 | ; eax - color of pixel in coordinats (x,y) |
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45 | GetColorOfPixel: |
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46 | |||
7258 | IgorA | 47 | cmp esi,ebx |
48 | jb @f |
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49 | xor eax,eax |
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50 | dec eax |
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51 | ret |
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52 | @@: |
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180 | heavyiron | 53 | imul ebx,edi |
54 | add ebx,esi |
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55 | lea ebx,[ebx+ebx*2] |
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7258 | IgorA | 56 | mov eax,[eax+ebx] |
57 | and eax,0xffffff |
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180 | heavyiron | 58 | ret |
59 | |||
60 | ;procedure <<< |
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61 | ; IN |
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62 | ;eax - pointer to screen |
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63 | ;ebx - output array |
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64 | ;ecx - (screen size x)*bytes per pixel |
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65 | ;edx - x1*65536+y1 |
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66 | ;esi x2 |
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67 | ;edi - y2 |
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68 | ; OUT |
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69 | ;eax - number of pixels |
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70 | calculate_line: |
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71 | |||
72 | mov [pointer_to_screen],eax |
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73 | mov [output_array],ebx |
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74 | mov [screen_size_x],ecx |
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75 | mov eax,edx |
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76 | and eax,0xffff |
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77 | shr edx,16 |
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78 | mov [x_l],edx ;x=x1 |
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79 | mov [y_l],eax ;y=y1 |
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80 | mov [sx],1 |
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81 | mov [sy],1 |
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82 | |||
83 | mov edx,[output_array] |
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84 | |||
85 | sub esi,[x_l] ;esi=x2-x1 |
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86 | jnz no_0_x |
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87 | and esi,0 |
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88 | jmp x_no_minus |
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89 | no_0_x: |
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90 | jns x_no_minus |
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91 | neg esi |
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92 | mov [sx],-1 ;sx=-sx |
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93 | x_no_minus: |
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94 | |||
95 | sub edi,[y_l] ;edi=y2-y1 |
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96 | jnz no_0_y |
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97 | and edi,0 |
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98 | jmp y_no_minus |
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99 | no_0_y: |
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100 | jns y_no_minus |
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101 | neg edi |
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102 | mov [sy],-1 ;sy=-sy |
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103 | y_no_minus: |
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104 | |||
105 | mov [_dx],esi |
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106 | mov [_dy],edi |
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107 | |||
108 | cmp [_dx],0 ;if (dx=0 & dy=0) { } |
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109 | jnz no_null_d |
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110 | cmp [_dy],0 |
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111 | jnz no_null_d |
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112 | mov eax,[x_l] |
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113 | mov ebx,[y_l] |
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114 | mov [pixel_x],eax |
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115 | mov [pixel_y],ebx |
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116 | call setpixel ;setpixel(x1,y1) |
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117 | mov eax,1 |
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118 | ret |
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119 | no_null_d: |
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120 | |||
121 | cmp edi,esi ;if (dy>dx) { } |
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122 | jle no_bigger |
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123 | mov eax,[_dx] |
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124 | mov [z],eax ;z=dx |
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125 | mov eax,[_dy] |
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126 | mov [_dx],eax ;dx=dy |
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127 | mov eax,[z] |
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128 | mov [_dy],eax ;dy=z |
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129 | mov [_ch],dword 1 ;ch=true |
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130 | jmp exit_if2 |
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131 | no_bigger: ;else {} |
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132 | and [_ch],0 |
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133 | exit_if2: |
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134 | |||
135 | mov eax,[_dy] |
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136 | shl eax,1 |
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137 | sub eax,[_dx] |
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138 | mov [e],eax ;e=2*dy-dx |
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139 | |||
140 | mov esi,1 ;counter |
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141 | mov edi,[sx] |
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142 | mov ebp,[sy] |
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143 | do: |
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144 | |||
145 | mov eax,[x_l] |
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146 | mov ebx,[y_l] |
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147 | mov [pixel_x],eax |
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148 | mov [pixel_y],ebx |
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149 | call setpixel |
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150 | |||
151 | cmp [e],0 |
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152 | js while_e |
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153 | |||
154 | mov eax,[_ch] |
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155 | test eax,eax |
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156 | jz ch_else |
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157 | add [x_l],edi |
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158 | jmp exit_if3 |
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159 | ch_else: |
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160 | add [y_l],ebp |
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161 | exit_if3: |
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162 | |||
163 | mov eax,[_dx] |
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164 | shl eax,1 |
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165 | sub [e],eax ;e=e-2*dx |
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166 | |||
167 | while_e: |
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168 | |||
169 | mov eax,[_ch] |
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170 | test eax,eax |
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171 | jz ch_else2 |
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172 | add [y_l],ebp |
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173 | jmp exit_if4 |
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174 | ch_else2: |
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175 | add [x_l],edi |
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176 | exit_if4: |
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177 | |||
178 | mov eax,[_dy] |
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179 | shl eax,1 |
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180 | add [e],eax ;e=e+2*dy |
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181 | inc esi |
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182 | |||
183 | mov ecx,[_dx] |
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184 | cmp esi,ecx |
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185 | jle do ;while (i<=dx) |
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186 | |||
187 | mov eax,[x_l] |
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188 | mov ebx,[y_l] |
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189 | mov [pixel_x],eax |
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190 | mov [pixel_y],ebx |
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191 | call setpixel |
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192 | |||
193 | mov eax,[output_array] |
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194 | sub eax,edx |
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195 | shr eax,2 |
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196 | |||
197 | ret |
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198 | ;--------------------------- |
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199 | ;procedure calculate <<<< |
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200 | ; IN |
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201 | ;eax - pointer to screen |
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202 | ;ebx - output array |
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203 | ;ecx - (screen size x) |
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204 | ;edx - x1*65536+y1 |
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205 | ;esi x2 |
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206 | ;edi - y2 |
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207 | ; OUT |
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208 | ;eax - number of pixels |
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209 | |||
210 | calculate_rectangle: |
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211 | |||
212 | mov [pointer_to_screen],eax |
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213 | mov [output_array],ebx |
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214 | mov [screen_size_x],ecx |
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215 | mov eax,edx |
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216 | and eax,0xffff |
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217 | shr edx,16 |
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218 | mov [x_l],edx ;x=x1 |
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219 | mov [y_l],eax ;y=y1 |
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220 | mov [x2],esi ;x2 |
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221 | mov [y2],edi ;y2 |
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222 | mov [sx],1 |
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223 | mov [sy],1 |
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224 | |||
225 | mov edx,[output_array] |
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226 | |||
227 | sub esi,[x_l] ;esi=x2-x1 |
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228 | jnz no_0_x_r |
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229 | and esi,0 |
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230 | jmp x_no_minus_r |
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231 | no_0_x_r: |
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232 | jns x_no_minus_r |
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233 | neg esi |
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234 | mov [sx],-1 ;sx=-sx |
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235 | x_no_minus_r: |
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236 | |||
237 | sub edi,[y_l] ;edi=y2-y1 |
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238 | jnz no_0_y_r |
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239 | and edi,0 |
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240 | jmp y_no_minus_r |
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241 | no_0_y_r: |
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242 | jns y_no_minus_r |
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243 | neg edi |
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244 | mov [sy],-1 ;sy=-sy |
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245 | y_no_minus_r: |
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246 | |||
247 | mov [_dx],esi |
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248 | mov [_dy],edi |
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249 | |||
250 | cmp [_dx],0 ;if (dx=0 & dy=0) { } |
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251 | jnz no_null_r |
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252 | cmp [_dy],0 |
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253 | jnz no_null_r |
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254 | mov eax,[x_l] |
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255 | mov ebx,[y_l] |
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256 | mov [pixel_x],eax |
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257 | mov [pixel_y],ebx |
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258 | call setpixel ;setpixel(x1,y1) |
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259 | mov eax,1 |
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260 | ret |
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261 | no_null_r: |
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262 | |||
263 | mov edi,[_dx] |
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264 | mov esi,[x_l] ;x1 |
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265 | |||
266 | horizontal_lines: |
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267 | |||
268 | mov eax,esi ;x |
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269 | mov ebx,[y_l] ;y1 |
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270 | mov [pixel_x],eax |
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271 | mov [pixel_y],ebx |
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272 | call setpixel |
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273 | |||
274 | mov eax,esi ;x |
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275 | mov ebx,[y2] ;y2 |
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276 | mov [pixel_x],eax |
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277 | mov [pixel_y],ebx |
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278 | call setpixel |
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279 | |||
280 | add esi,[sx] |
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281 | dec edi |
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282 | jns horizontal_lines |
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283 | |||
284 | mov edi,[_dy] |
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285 | mov esi,[y_l] ;y1 |
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286 | vertical_lines: |
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287 | |||
288 | mov eax,[x_l] ;x1 |
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289 | mov ebx,esi ;y |
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290 | mov [pixel_x],eax |
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291 | mov [pixel_y],ebx |
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292 | call setpixel |
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293 | |||
294 | mov eax,[x2] ;x2 |
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295 | mov ebx,esi ;y |
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296 | mov [pixel_x],eax |
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297 | mov [pixel_y],ebx |
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298 | call setpixel |
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299 | |||
300 | add esi,[sy] |
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301 | dec edi |
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302 | jns vertical_lines |
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303 | |||
304 | mov eax,[output_array] |
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305 | sub eax,edx |
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306 | shr eax,2 |
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307 | |||
308 | ret |
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309 | ;procedure <<<<< |
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310 | ; IN |
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311 | ;eax - pointer to screen |
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312 | ;ebx - output array |
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313 | ;ecx - (screen size x)*bytes per pixel |
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314 | ;edx - x_c*65536+y_c |
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315 | ;esi r |
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316 | ; OUT |
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317 | ;eax - number of pixels |
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318 | |||
319 | calculate_circle: |
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320 | |||
321 | mov [pointer_to_screen],eax |
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322 | mov [output_array],ebx |
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323 | mov [screen_size_x],ecx |
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324 | mov eax,edx |
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325 | and eax,0xffff |
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326 | shr edx,16 |
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327 | mov [x2],edx ;circle centr x |
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328 | mov [y2],eax ;circle centr y |
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329 | mov [r],esi ;radius of cicrle |
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330 | |||
331 | mov edx,[output_array] |
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332 | |||
333 | mov [x_l],0 ;x=0 |
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334 | mov [y_l],esi ;y=r |
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335 | mov [d],3 |
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336 | mov eax,[r] |
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337 | shl eax,1 |
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338 | sub [d],eax ;d=3-2*r |
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339 | |||
340 | |||
341 | while_circle: |
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342 | |||
343 | mov esi,[y_l] |
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344 | mov edi,[x_l] |
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345 | |||
346 | sub esi,edi ;while y>=x |
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347 | js exit_while_circle |
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348 | |||
349 | |||
350 | mov eax,[x_l] ;x |
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351 | mov ebx,[y_l] ;y |
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352 | add eax,[x2] ;x+xc |
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353 | add ebx,[y2] ;y+yc |
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354 | mov [pixel_x],eax |
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355 | mov [pixel_y],ebx |
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356 | call setpixel |
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357 | |||
358 | mov eax,[x_l] ;x |
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359 | mov ebx,[y2] ;yc |
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360 | add eax,[x2] ;x+xc |
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361 | sub ebx,[y_l] ;yc-y |
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362 | mov [pixel_x],eax |
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363 | mov [pixel_y],ebx |
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364 | call setpixel |
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365 | |||
366 | mov eax,[x2] ;xc |
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367 | mov ebx,[y2] ;yc |
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368 | sub eax,[x_l] ;xc-x |
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369 | add ebx,[y_l] ;yc+y |
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370 | mov [pixel_x],eax |
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371 | mov [pixel_y],ebx |
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372 | call setpixel |
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373 | |||
374 | mov eax,[x2] ;xc |
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375 | mov ebx,[y2] ;yc |
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376 | sub eax,[x_l] ;xc-x |
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377 | sub ebx,[y_l] ;yc-y |
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378 | mov [pixel_x],eax |
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379 | mov [pixel_y],ebx |
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380 | call setpixel |
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381 | |||
382 | mov eax,[x2] ;xc |
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383 | mov ebx,[y2] ;yc |
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384 | add eax,[y_l] ;xc+y |
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385 | add ebx,[x_l] ;yc+x |
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386 | mov [pixel_x],eax |
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387 | mov [pixel_y],ebx |
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388 | call setpixel |
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389 | |||
390 | mov eax,[x2] ;xc |
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391 | mov ebx,[y2] ;yc |
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392 | add eax,[y_l] ;xc+y |
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393 | sub ebx,[x_l] ;yc-x |
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394 | mov [pixel_x],eax |
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395 | mov [pixel_y],ebx |
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396 | call setpixel |
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397 | |||
398 | mov eax,[x2] ;xc |
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399 | mov ebx,[y2] ;yc |
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400 | sub eax,[y_l] ;xc-y |
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401 | add ebx,[x_l] ;x+yc |
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402 | mov [pixel_x],eax |
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403 | mov [pixel_y],ebx |
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404 | call setpixel |
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405 | |||
406 | mov eax,[x2] ;xc |
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407 | mov ebx,[y2] ;yc |
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408 | sub eax,[y_l] ;xc-y |
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409 | sub ebx,[x_l] ;yc-x |
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410 | mov [pixel_x],eax |
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411 | mov [pixel_y],ebx |
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412 | call setpixel |
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413 | |||
414 | cmp [d],0 |
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415 | jns if1_d |
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416 | mov eax,[x_l] |
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417 | shl eax,2 |
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418 | add eax,6 |
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419 | add [d],eax ;d=d+4*x+6 |
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420 | jmp exit_if1_d |
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421 | if1_d: |
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422 | mov eax,[x_l] |
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423 | sub eax,[y_l] |
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424 | shl eax,2 |
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425 | add eax,10 |
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426 | add [d],eax ;d=d+4*(x-y)+10 |
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427 | dec [y_l] |
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428 | exit_if1_d: |
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429 | inc [x_l] |
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430 | |||
431 | jmp while_circle |
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432 | |||
433 | exit_while_circle: |
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434 | |||
435 | mov eax,[output_array] |
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436 | sub eax,edx |
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437 | shr eax,2 |
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438 | |||
439 | ret |
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440 | ;procedure <<<<< |
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441 | ;IN |
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442 | ;eax - pointer to screen |
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443 | ;ebx - pointer to output array |
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444 | ;ecx - picture size x |
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445 | ;edx - x0*65536+y0 |
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446 | ;esi - x_max*65536+y_max |
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447 | ;edi - color of flood fill arrea |
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448 | flood_fill: |
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449 | |||
450 | mov [pointer_to_screen],eax |
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451 | mov [output_array],ebx |
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452 | mov [screen_size_x],ecx |
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453 | |||
454 | mov eax,edx |
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455 | and edx,0xffff |
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456 | shr eax,16 |
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457 | mov [sx],eax ;x0 |
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458 | mov [sy],edx ;y0 |
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459 | |||
460 | mov eax,esi |
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461 | and esi,0xffff |
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462 | shr eax,16 |
||
463 | mov [m_x],eax ;maximum x size of picture |
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464 | mov [m_y],esi ;maximum y size of picture |
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465 | |||
466 | mov [c_f],edi ;color of feel |
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467 | |||
468 | mov eax,[output_array] ; stek |
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469 | mov [eax],dword 1 ; number of pointes in stek |
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470 | mov esi,[sx] |
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471 | mov edi,[sy] |
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472 | mov [eax+4],si ;x0 |
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473 | mov [eax+4+2],di ;y0 |
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474 | |||
475 | mov eax,[pointer_to_screen] |
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476 | mov ebx,[screen_size_x] |
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477 | call GetColorOfPixel |
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478 | mov [c],eax |
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479 | |||
480 | cmp eax,[c_f] |
||
481 | jne can_flood_fill |
||
482 | mov eax,[output_array] |
||
483 | mov [eax],dword 0 |
||
484 | ret |
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485 | can_flood_fill: |
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486 | |||
487 | while_no_null: |
||
488 | ;извлекаем координаты из стека |
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489 | mov eax,[output_array] |
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490 | mov ebx,[eax] |
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491 | dec ebx |
||
492 | shl ebx,2 ;ebx=ebx*8 |
||
493 | add ebx,4 ;ebx=ebx*8+4 |
||
494 | xor esi,esi |
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495 | xor edi,edi |
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496 | mov si,[eax+ebx] ;x |
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497 | mov di,[eax+ebx+2] ;y |
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498 | mov [x2],esi |
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499 | mov [y2],edi |
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500 | |||
501 | mov [sy],edi |
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502 | |||
503 | mov eax,[output_array] |
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504 | mov ebx,[eax] |
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505 | dec ebx |
||
506 | mov [eax],ebx ; |
||
507 | |||
508 | ; go to right until color=c or until x |
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509 | mov edx,[x2] |
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510 | go_to_right: |
||
511 | |||
512 | mov eax,[pointer_to_screen] |
||
513 | mov ebx,[screen_size_x] |
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514 | mov esi,edx; |
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515 | mov edi,[sy] |
||
516 | call GetColorOfPixel |
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517 | |||
518 | cmp eax,[c] |
||
519 | jne not_color_of_feeling_arrea_right |
||
520 | |||
521 | mov eax,[pointer_to_screen] |
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522 | mov ebx,[screen_size_x] |
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523 | mov ecx,[c_f] ;color of filinf flood |
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524 | mov esi,edx |
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525 | mov edi,[sy] |
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526 | call PutPixel |
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527 | |||
528 | inc edx |
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529 | |||
530 | mov eax,edx |
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531 | cmp eax,[m_x] |
||
532 | jle go_to_right |
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533 | |||
534 | not_color_of_feeling_arrea_right: |
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535 | |||
536 | mov eax,edx |
||
537 | dec eax ;---------------------------------- |
||
538 | mov [x_r],eax ; save right absciss |
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539 | |||
540 | |||
541 | ; go to left until color=c or until x>0 |
||
542 | mov esi,[x2] |
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543 | mov edi,[y2] |
||
544 | dec esi |
||
545 | mov edx,esi |
||
546 | mov [sy],edi |
||
547 | |||
548 | go_to_left: |
||
549 | |||
550 | mov eax,[pointer_to_screen] |
||
551 | mov ebx,[screen_size_x] |
||
552 | mov esi,edx |
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553 | mov edi,[sy] |
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554 | call GetColorOfPixel |
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555 | |||
556 | cmp eax,[c] |
||
557 | jne not_color_of_feeling_arrea_left |
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558 | |||
559 | mov eax,[pointer_to_screen] |
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560 | mov ebx,[screen_size_x] |
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561 | mov ecx,[c_f] ;color of filing flood |
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562 | mov esi,edx |
||
563 | mov edi,[sy] |
||
564 | call PutPixel |
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565 | |||
566 | dec edx |
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567 | jns go_to_left |
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568 | |||
569 | not_color_of_feeling_arrea_left: |
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570 | |||
571 | mov eax,edx |
||
572 | inc eax ;---------------------------------------- |
||
573 | mov [x_l],eax ; save left absciss |
||
574 | |||
575 | mov edi,[y2] |
||
576 | dec edi |
||
577 | jns no_null_1_floodfill |
||
578 | mov edi,1 |
||
579 | no_null_1_floodfill: |
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580 | mov [sy],edi |
||
581 | |||
582 | mov eax,[output_array] |
||
583 | mov ebx,[eax] |
||
584 | mov [l_s],ebx ; save total number of points in stek |
||
585 | mov [l_c],-1 ; last color = -1 |
||
586 | mov edx,[x_l] |
||
587 | analizing_from_left_to_right_upper: |
||
588 | ;анализируем пиксели над линией с левого края |
||
589 | mov eax,[pointer_to_screen] |
||
590 | mov ebx,[screen_size_x] |
||
591 | mov esi,edx |
||
592 | mov edi,[sy] |
||
593 | call GetColorOfPixel |
||
594 | push eax |
||
595 | |||
7258 | IgorA | 596 | cmp eax,[c] ;если цвет проверямого пикселя не равен с, то не заносим его в стек |
180 | heavyiron | 597 | jne no_fill_1 |
598 | mov ebx,[l_c] |
||
599 | cmp ebx,[c] |
||
600 | jne no_fill_1 |
||
601 | mov edi,[sy] |
||
602 | mov eax,[output_array] |
||
603 | mov ebx,[eax] |
||
604 | inc ebx |
||
605 | mov [eax],ebx |
||
606 | dec ebx |
||
607 | shl ebx,2 |
||
608 | add ebx,4 |
||
609 | mov esi,edx |
||
610 | dec esi |
||
611 | mov [eax+ebx],si |
||
612 | mov [eax+ebx+2],di |
||
613 | no_fill_1: |
||
614 | |||
615 | pop [l_c] |
||
616 | inc edx |
||
617 | cmp edx,[x_r] |
||
618 | jle analizing_from_left_to_right_upper |
||
619 | |||
620 | mov ebx,[l_c] |
||
621 | cmp ebx,[c] ;last color is c(color of filing arrea) ? |
||
622 | jne have_changes_in_stek_1 |
||
623 | ;save last color in stek |
||
624 | mov edi,[sy] |
||
625 | mov eax,[output_array] |
||
626 | mov ebx,[eax] |
||
627 | inc ebx |
||
628 | mov [eax],ebx |
||
629 | dec ebx |
||
630 | shl ebx,2 |
||
631 | add ebx,4 |
||
632 | mov esi,edx |
||
633 | dec esi |
||
634 | mov [eax+ebx],si |
||
635 | mov [eax+ebx+2],di |
||
636 | |||
637 | have_changes_in_stek_1: |
||
638 | |||
639 | mov edi,[y2] |
||
640 | inc edi |
||
641 | cmp edi,[m_y] |
||
642 | jle no_max_1_floodfill |
||
643 | mov edi,[m_y] |
||
644 | no_max_1_floodfill: |
||
645 | mov [sy],edi |
||
646 | |||
647 | mov eax,[output_array] |
||
648 | mov ebx,[eax] |
||
649 | mov [l_s],ebx ; save total number of points in stek |
||
650 | mov [l_c],-1 ; last color = -1 |
||
651 | mov edx,[x_l] |
||
652 | analizing_from_left_to_right_down: |
||
653 | |||
654 | ;анализируем пиксели под линией с левого края |
||
655 | mov eax,[pointer_to_screen] |
||
656 | mov ebx,[screen_size_x] |
||
657 | mov esi,edx |
||
658 | mov edi,[sy] |
||
659 | call GetColorOfPixel |
||
660 | push eax |
||
661 | |||
7258 | IgorA | 662 | cmp eax,[c] ;если цвет проверямого пикселя не равен с, то не заносим его в стек |
180 | heavyiron | 663 | je no_fill_3 |
664 | mov ebx,[l_c] |
||
665 | cmp ebx,[c] |
||
666 | jne no_fill_3 |
||
667 | mov edi,[sy] |
||
668 | mov eax,[output_array] |
||
669 | mov ebx,[eax] |
||
670 | inc ebx |
||
671 | mov [eax],ebx |
||
672 | dec ebx |
||
673 | shl ebx,2 |
||
674 | add ebx,4 |
||
675 | mov esi,edx |
||
676 | dec esi |
||
677 | mov [eax+ebx],si |
||
678 | mov [eax+ebx+2],di |
||
679 | no_fill_3: |
||
680 | |||
681 | pop [l_c] |
||
682 | inc edx |
||
683 | cmp edx,[x_r] |
||
684 | jle analizing_from_left_to_right_down |
||
685 | |||
686 | mov ebx,[l_c] |
||
687 | cmp ebx,[c] ;last color is c(color of filing arrea) ? |
||
688 | jne have_changes_in_stek_2 |
||
689 | ;save last color in stek |
||
690 | mov edi,[sy] |
||
691 | mov eax,[output_array] |
||
692 | mov ebx,[eax] |
||
693 | inc ebx |
||
694 | mov [eax],ebx |
||
695 | dec ebx |
||
696 | shl ebx,2 |
||
697 | add ebx,4 |
||
698 | mov esi,edx |
||
699 | dec esi |
||
700 | mov [eax+ebx],si |
||
701 | mov [eax+ebx+2],di |
||
702 | |||
703 | have_changes_in_stek_2: |
||
704 | |||
705 | mov ebx,[output_array] ;while stek have points пока в стеке есть точки(координаты) |
||
706 | mov ecx,[ebx] |
||
707 | test ecx,ecx |
||
708 | jnz while_no_null |
||
709 | |||
710 | |||
711 | ret |
||
712 | ; procedure <<<<< |
||
713 | ; IN |
||
714 | ; eax - pointer to picture |
||
715 | ; ebx - output array |
||
716 | ; ecx - picture size x |
||
717 | ; edx - x0*65536+y0 |
||
718 | ; esi - a*65536+b |
||
719 | ; edi - color |
||
720 | ; OUT |
||
721 | ; procedure not return value |
||
722 | calculate_ellips: |
||
723 | |||
724 | mov [pointer_to_screen],eax |
||
725 | mov [output_array],ebx |
||
726 | mov [screen_size_x],ecx |
||
727 | mov [e],ebx |
||
728 | |||
729 | mov eax,edx |
||
730 | and eax,0xffff |
||
731 | shr edx,16 |
||
732 | mov [x2],edx ; centr x |
||
733 | mov [y2],eax ; centr y |
||
734 | |||
735 | mov eax,esi |
||
736 | and eax,0xffff ;eax=b |
||
737 | shr esi,16 ;esi=a |
||
738 | mov [a],esi |
||
739 | mov [b],eax |
||
740 | |||
741 | mov [c],edi ;color |
||
742 | mov [row],eax ;b |
||
743 | |||
744 | imul esi,esi ;a*a |
||
745 | imul eax,eax ;b*b |
||
746 | |||
747 | mov [a_square],esi |
||
748 | mov [b_square],eax |
||
749 | and [col],0 |
||
750 | |||
751 | shl esi,1 |
||
752 | shl eax,1 |
||
753 | mov [two_a_square],esi |
||
754 | mov [two_b_square],eax |
||
755 | shl esi,1 |
||
756 | shl eax,1 |
||
757 | mov [four_a_square],esi |
||
758 | mov [four_b_square],eax |
||
759 | |||
760 | mov eax,[row] ;eax=row |
||
761 | mov ebx,eax |
||
762 | dec ebx ;ebx=(row-1) |
||
763 | imul ebx,eax ;ebx=(row-1)*row |
||
764 | imul ebx,[two_a_square] ;ebx=two_a_square*((row-1)*row) |
||
765 | mov ecx,[a_square] ;ecx=a_square |
||
766 | mov eax,1 |
||
767 | sub eax,ecx ;eax=(1-a_square) |
||
768 | imul eax,[two_b_square] ;eax=two_b_square*(1-a_square) |
||
769 | add ebx,[a_square] ;ebx=two_a_square*((row-1)*row)+a_square |
||
770 | add eax,ebx ;eax=two_a_square*((row-1)*row)+a_square+two_b_square*(1-a_square) |
||
771 | mov [d],eax |
||
772 | |||
773 | mov edx,[x2] ;x |
||
774 | mov ebp,[y2] ;y |
||
775 | |||
776 | while_ellips_1: |
||
777 | mov esi,[a_square] |
||
778 | mov edi,[b_square] |
||
779 | imul esi,[row] |
||
780 | imul edi,[col] |
||
781 | cmp esi,edi |
||
782 | jle no_while_ellips_1 |
||
783 | |||
784 | mov eax,edx ;x |
||
785 | mov ebx,ebp ;y |
||
786 | add eax,[col] ;x+col |
||
787 | add ebx,[row] ;y+row |
||
788 | mov [pixel_x],eax |
||
789 | mov [pixel_y],ebx |
||
790 | call setpixel |
||
791 | |||
792 | mov eax,edx ;x |
||
793 | mov ebx,ebp ;y |
||
794 | add eax,[col] ;x+col |
||
795 | sub ebx,[row] ;y-row |
||
796 | mov [pixel_x],eax |
||
797 | mov [pixel_y],ebx |
||
798 | call setpixel |
||
799 | |||
800 | mov eax,edx ;x |
||
801 | mov ebx,ebp ;y |
||
802 | sub eax,[col] ;x-col |
||
803 | add ebx,[row] ;y+row |
||
804 | mov [pixel_x],eax |
||
805 | mov [pixel_y],ebx |
||
806 | call setpixel |
||
807 | |||
808 | mov eax,edx ;x |
||
809 | mov ebx,ebp ;y |
||
810 | sub eax,[col] ;x-col |
||
811 | sub ebx,[row] ;y-row |
||
812 | mov [pixel_x],eax |
||
813 | mov [pixel_y],ebx |
||
814 | call setpixel |
||
815 | |||
816 | mov eax,[d] |
||
817 | cmp eax,0 |
||
818 | js lab33 ;>=0 |
||
819 | dec [row] |
||
820 | mov ebx,[four_a_square] |
||
821 | mov ecx,[row] |
||
822 | imul ebx,ecx ;ebx=four_a_square*(row) |
||
823 | sub [d],ebx ;d=d-four_a_square*(row) |
||
824 | lab33: |
||
825 | |||
826 | mov eax,[col] |
||
827 | shl eax,1 |
||
828 | add eax,3 |
||
829 | imul eax,[two_b_square] |
||
830 | add [d],eax ;d=d+two_b_square*(3+(col*2)) |
||
831 | |||
832 | inc [col] |
||
833 | jmp while_ellips_1 |
||
834 | |||
835 | no_while_ellips_1: |
||
836 | |||
837 | mov eax,[col] |
||
838 | inc eax |
||
839 | imul eax,[col] |
||
840 | imul eax,[two_b_square] ;eax=two_b_square*((col+1)*col) |
||
841 | mov ebx,[row] |
||
842 | sub ebx,2 |
||
843 | imul ebx,[row] |
||
844 | inc ebx |
||
845 | imul ebx,[two_a_square] ;ebx=two_a_square*((row-2)*row+1) |
||
846 | mov ecx,1 |
||
847 | sub ecx,[two_a_square] |
||
848 | imul ecx,[b_square] ;ecx=(1-two_a_square)*b_square |
||
849 | add eax,ebx |
||
850 | add eax,ecx |
||
851 | mov [d],eax ;two_b_square*(col+1)*col+two_a_square*(row*(row-2)+1)+(1-two_a_square)*b_square |
||
852 | |||
853 | mov edx,[x2] ;x |
||
854 | mov ebp,[y2] ;y |
||
855 | |||
856 | while_ellips_2: |
||
857 | mov esi,[row] |
||
858 | inc esi |
||
859 | test esi,esi |
||
860 | jz no_while_ellips_2 |
||
861 | |||
862 | mov eax,edx ;x |
||
863 | mov ebx,ebp ;y |
||
864 | add eax,[col] ;x+col |
||
865 | add ebx,[row] ;y+row |
||
866 | mov [pixel_x],eax |
||
867 | mov [pixel_y],ebx |
||
868 | call setpixel |
||
869 | |||
870 | mov eax,edx ;x |
||
871 | mov ebx,ebp ;y |
||
872 | add eax,[col] ;x+col |
||
873 | sub ebx,[row] ;y-row |
||
874 | mov [pixel_x],eax |
||
875 | mov [pixel_y],ebx |
||
876 | call setpixel |
||
877 | |||
878 | mov eax,edx ;x |
||
879 | mov ebx,ebp ;y |
||
880 | sub eax,[col] ;x-col |
||
881 | add ebx,[row] ;y+row |
||
882 | mov [pixel_x],eax |
||
883 | mov [pixel_y],ebx |
||
884 | call setpixel |
||
885 | |||
886 | mov eax,edx ;x |
||
887 | mov ebx,ebp ;y |
||
888 | sub eax,[col] ;x-col |
||
889 | sub ebx,[row] ;y-row |
||
890 | mov [pixel_x],eax |
||
891 | mov [pixel_y],ebx |
||
892 | call setpixel |
||
893 | |||
894 | mov eax,[d] |
||
895 | cmp eax,0 |
||
896 | jns lab34 |
||
897 | |||
898 | inc [col] |
||
899 | mov ebx,[col] |
||
900 | imul ebx,[four_b_square] |
||
901 | add [d],ebx ;d=d+four_b_square*col |
||
902 | lab34: |
||
903 | dec [row] |
||
904 | mov ebx,[row] |
||
905 | shl ebx,1 |
||
906 | mov eax,3 |
||
907 | sub eax,ebx |
||
908 | imul eax,[two_a_square] |
||
909 | add [d],eax ;d=d+two_b_square*(3-(row*2)) |
||
910 | |||
911 | jmp while_ellips_2 |
||
912 | no_while_ellips_2: |
||
913 | |||
914 | mov eax,[output_array] |
||
915 | sub eax,[e] |
||
916 | shr eax,2 |
||
917 | |||
918 | ret |
||
919 | ;--------------------------- |
||
920 | x_l dd ? |
||
921 | y_l dd ? |
||
922 | x_r dd ? |
||
923 | y_r dd ? |
||
924 | _dx dd ? |
||
925 | _dy dd ? |
||
926 | sx dd ? |
||
927 | sy dd ? |
||
928 | z dd ? |
||
929 | e dd ? |
||
930 | i dd ? |
||
931 | _ch dd ? |
||
932 | x2 dd ? |
||
933 | y2 dd ? |
||
934 | d dd ? |
||
935 | r dd ? |
||
936 | m_x dd ? |
||
937 | m_y dd ? |
||
938 | c dd ? |
||
939 | c_f dd ? |
||
940 | l_c dd ? |
||
941 | l_s dd ? |
||
942 | ;--------------------------- |
||
943 | pointer_to_screen dd 0 |
||
944 | screen_size_x dd 0 |
||
945 | output_array dd 0 |
||
946 | pixel_x dd 0 |
||
947 | pixel_y dd 0 |
||
948 | ;--------------------------- |
||
949 | a dd 0 |
||
950 | b dd 0 |
||
951 | col dd 0 |
||
952 | row dd 0 |
||
953 | bnew dd 0 |
||
954 | a_square dd 0 |
||
955 | b_square dd 0 |
||
956 | two_a_square dd 0 |
||
957 | two_b_square dd 0 |
||
958 | four_a_square dd 0 |
||
959 | four_b_square dd 0 |
||
960 | ;----------------------------- |