Glitter Graphics



No

Cactus Name
/FAN Name

Other names from Reference
CACTI THE ILLUSTRATED DICTIONARY by ROD & KEN PRESTON-MAFHAM
 

แหล่งเมล็ดพันธุ์

  npcacti  

1


Astrophytum myriostigma

Astrophytum myriostigma
 v. quadricostatum (Moell.)
 
 
  page 7

tum_rabbit

Astrophytum myriosticma

2


Discocactus araneispinus

1. Discocactus zehntneri B. & R.
2. Discocactus albispinus
3. Discocactus boomianus
 
 
  page 32

คุณโอภาส

Discocactus aranispinus(zehntneri)

3


Melocactus evae

 

คุณโอภาส

Melocactus longispinus

4


Coryphantha maiz-tablasensis

  page 26

คุณโอภาส

Coryphantha elephantidens

5


Thelocactus bicolor

1.Thelocactus bicolor v. tricolor
2. Ferocactus bicolor
3. others..
 
 
  page 189

tum_rabbit

Matucata macrosensis

6


Hamatocactus setispinus

 

tum_rabbit

Hamatocactus hamatacanthus

7


Obregonia denegrii

 1. Ariocarpus denegrii
2.Strombocactus denegrii
 
 
  page 16

คุณโอภาส

Obregonia denegrii

8


Ariocarpus trigonus

  page 156

คุณ Baso

Ariocarpus trigonus

9


Echinocactus grusonii

  page 32

tum_rabbit

Echinocactus grusonii

10


Notocactus ottonis

1. Parodia ottonis
 
 
  page 153

คุณโอภาส

Notocactus ottonis

 

 

 

     total

4

 

 

 

อันดับที่ได้

3

 

 

 

เข้ารอบ 1

เข้ารอบ 1

 

  NP CACTUS 

 

1.Astrophytum myriosticma
2.Discocactus aranispinus (zehntneri)
3.Melocactus longispinus
4.Coryphantha elephantidens
5.Matucata macrosensis
6.Hamatocactus hamatacanthus
7.Obregonia denegrii
8.Ariocarpus trigonus
9.Echinocactus grusonii
10.Notocactus ottonis

 

โดย npcacti [24 พ.ค. 2551]

 

 


Paper comes in a variety of different sizes and qualities, ranging from newspaper grade for practice up to high quality and relatively expensive paper sometimes sold as individual sheets.Papers can vary in texture, hue, acidity, and strength when wet. Smooth paper is good for rendering fine detail, but a more "toothy" paper will hold the drawing material better. Thus a more coarse material is useful for producing deeper contrast.

For pen and ink work, typing paper is often used for practice drawings, but heavier paper holds up better. Bristol board makes a hard surface that is especially good for ink or fine detailed graphite paper is sometimes favored for ink drawing due to its texture. Tracing vellum is often used for experimenting on top of a pencil drawing, prior to committing a technique to the final pag
.

Applying media

Almost all dheir hands and fingers to apply the media, with the exception of some handicapped individuals who draw with their mouths or feet.

Prior to working on an image, the artist will likely want to gain an understanding of how the various media will work. The different drawing implements can be tried on practice sheets in order to determine value and texture, and how to apply the implement in order to produce various effects.



Line drawing in

The stroke of the drawing implement can be used to control the appearance of the image. Ink drawings typically use, which consists of groups of parallel lines. hing uses hatching in two or more different directions to create a darker tone. Broken hatching, or lines with intermittent breaks, is used to form lighter tones, and by controlling the density of the breaks a graduation of tone can be achieved.ts to produce tone,

e similar techniques, although with pencils and drawing sticks continuous variations in tone can be achieved. For best results the lines in a sketch are typically drawn to follow the contour curves of the surface, thus producing a depth effect. When drawing hair, the lines of the sketch follow the direction of the hair growth.

Typically a drawing will be filled in based on which hand the artist favors. A right-handed artist will want to draw from left to right in order to avoid smearing the image. Sometimes the artist will want to leave a section of the image blank while filling in the remainder of the picture. can be used for this purpose. The shape of the area to be preserved is cut out of resulting shape is then applied to the drawing surface. This will protect the surface from receiving any stray marks before it is ready to be filled in.

Another method to preserve a section of the image is to apply a spray-on fixative to the surface. This will hold loose material more firmly to the sheet and prevent it from smearing. However the fixative spray typically uses chemicals that can negatively affect the respiratory system, so it should be employed in a well-ventilated area such as outdoors.

Tone

Shading is the technique of varying the tonal values on the paper to represent the shade of the material as well as the placement of the shadows. Careful attention to reflected light, shadows, and highlights can result in a very realistic rendition of the image.

Blending uses an implement to soften or spread the original drawing strokes. Blending is most easily done with a medium that does not immediately, such as graphite, chalk, or charcoal, although freshly applied ink can be smudged, wet or dry, for some effects. For shading and blending, the artist can use a  a fingertip, or any combination of them. A piece of  useful for creating smooth textures, and for removing material to lighten the tone. Continuous tone can be achieved with graphite on a smooth surface without blending, but the technique is laborious, involving small circular or oval strokes with a somewhat blunt point.

Shading techniques that also introduce texture to the drawing include There are a number of other methods for producing texture in the picture: in addition to choosing a suitable paper, the type of drawing material and the drawing technique will result in different textures. Texture can be made to appear more realistic when it is drawn next to a contrasting texture; a coarse texture will be more obvious when placed next to a smoothly blended area. A similar effect can be achieved by drawing different tones in close proximity; a light edge next to a dark background will stand out to the eye, and almost appear to float above the surface.

Layout

Measuring the dimensions of a subject while blocking in the drawing is an important step in producing a realistic rendition of then be used to measure the angles of different sides. These angles can be reproduced on the drawing surface and then rechecked to make sure they are accurate. Another form of measurement is to compare the relative sizes of different parts of the subject with each other. A finger placed at a point along the drawing implement can be used to compare that dimension with other parts of the image.

When attempting to draw a complicated shape such as a human figure, it is helpful at first to represent the form with a set of primitive shapes. Almost any form can be represented by some combination of the cube, sphere, cylinder, and cone. Once these basic shapes have been assembled into a likeness, then the drawing can be refined into a more accurate and polished form. The lines of the primitive shapes are removed and replaced by the final likeness.

A more refined art of epon the artist possessing a deep understanding of anatomy and the human proportions. A trained artist is familiar with the skeleton structure, joint location, muscle placement, tendon movement, and how the different parts work together during movement. This allows the artist to render more natural poses that do not appear artificially stiff. The artist is also familiar with how the proportions vary depending on the age of the subject, particularly when drawing a portrait.