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| View Original: | Surface normal illustration.png (1379x1488) | |||
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| Keywords: Surface normal illustration.png الناظم على سطح منحني في نقطة ما هو نفسه الناظم على مستوي مماس عند تلك النقطة Normala na površinu u tački je isto što i normala na tangentnu ravan te površine u toj istoj tački Normála k ploše v bodě je shodná s normálou k rovině tečné k dané ploše ve stejném bodě Die Oberflächennormale in einem Punkt entspricht der Normalen der Tangentenebene welche die Oberfläche in diesem Punkt berührt A normal to a surface at a point is the same as a normal to the tangent plane to that surface at that point Surfaca normalo kaj tan anta ebeno Normala na površinu Una normale ad una superficie è una normale al piano tangente nel punto De normaalvector van een 3D-oppervlak in een punt is de normaalvector van het raakvlak door dat punt aan het oppervlak door dat punt Konstrukcja wektora normalnego do powierzchni Ytnormalen i en punkt på en slät yta är normalvektorn på tangentplanet till ytan i punkten ค่านอร์มอลสำหรับจุดบนพื้น ิวหาได้จากค่านอร์มอลของระนาบสัม ัสที่สัม ัสพื้น ิวตรงจุดนั้น own Oleg Alexandrov Surface normal illustration svg Created with MATLAB Source code MATLAB <source lang matlab > an illustration of the surface normal function main a few settings BoxSize 5; N 100; gridsize BoxSize/N; lw 5; linewidth fs 35; fontsize the function giving the surface and its gradient f inline '10- x 2+y 2 /15' 'x' 'y' ; fx inline '-2 x/15' 'x' 'y' ; fy inline '-2 y/15' 'x' 'y' ; calc the surface XX -BoxSize gridsize BoxSize; YY -BoxSize gridsize BoxSize; X Y meshgrid XX YY ; Z f X Y ; plot the surface H figure 1 ; clf; hold on; axis equal; axis off; view -19 14 ; surf X Y Z 'FaceColor' 'red' 'EdgeColor' 'none' 'AmbientStrength' 0 3 'SpecularStrength' 1 'DiffuseStrength' 0 8 ; surf X Y 0 Z+f 0 0 +0 02 'FaceColor' 0 0 1 'EdgeColor' 'none' 'FaceAlpha' 0 4 camlight right; lighting phong; make nice lightning the vector at the current point as well as its tangent and normal components Z0 0 0 f 0 0 ; n fx 0 0 fy 0 0 1; n 2 n/norm n ; graph the vectors HH quiver3 Z0 1 Z0 2 Z0 3 n 1 n 2 n 3 0 8 ; set HH 1 'linewidth' lw ; set HH 2 'linewidth' lw set HH 2 'XData' 0 4 -0 78408 0 0 78408 NaN set HH 2 'YData' 0 4 0 78408 0 -0 78408 NaN set HH 2 'ZData' 1 14 824 17 2 14 824 NaN save to file print '-dpng' '-r300' 'surface_normal_illustration png' ; This picture was tweaked in Gimp after being saved from MATLAB to make the arrow look better </source> Images with Matlab source code Normal vectors Surface plots Files by User Oleg Alexandrov from en wikipedia | ||||
