Thunder and lightning → Natural phenomenon animation combat technology

★Chapter I. Wind
Wind is a common natural phenomenon in daily life. The air flow becomes the wind, the wind is the invisible airflow. Generally speaking, we are unable to identify the shape of the wind, although in the cartoon, we can draw some actually do not exist in the streamline, to show the speed of the wind faster. But in more cases, we still express the wind through the movement of various objects blown by the wind. Therefore, we study the Law of wind movement and the method of expressing wind, in fact, is to study the movement of various objects by the wind and the specific methods of expression.
For example, we can show the difference between wind strength and wind speed through the different motion states of a silk ribbon.
In cartoons, there are three ways to express the natural wind:
First, the Movement line expression method:
All relatively frivolous objects, such as leaves, paper, feathers and so on, when they are blown away from the original position, floating in the air, you can use the movement of the object line to express. The following factors should be taken into account when designing the motion lines and motion progress of such objects:
(1) The change of wind strength;
(2) The change of the angle between the object and the direction of motion, the rise of the angle of attack and the decline of the opposite;
(3) The angle between the object and the ground change, close to parallel when the descent speed is slow, close to the vertical drop speed.
Because of these factors, the motion posture, direction and velocity of the object floating in the air are constantly changing. When we design the motion line according to the plot and above factors and calculate the time of the group action, we can first draw the action gesture of the object at the turning point as the original painting. Then, according to the increase and decrease speed, determine how many animations to add between each original picture and the distance between each one. After adding the animation, the connection, can show the object with the wind drift movement. In this way, although there is no specific painting of the wind, but people from the effect of wind felt the existence of the wind.
Two, the Curve movement expression method:
All the light objects fixed in a certain position at one end (such as ribbons on the body, flags on the flagpole, etc.), can be blown by the wind and fluttering, the wind through the curve movement of these objects. The law of curvilinear motion has been said before and is not repeated here.
Third, streamline expression method:
For cyclones, tornadoes and wind, strong wind, the wind is only through the impact of the movement of the object to indirect performance is not enough, generally use streamline to directly connect the performance of the wind movement.
The use of streamline performance wind, you can use a pencil or color pencil in accordance with the direction of airflow movement, speed, to represent the momentum of the flow of wind streamline, in the moving paper on a sheet of painting out. Sometimes, according to the needs of the plot, but also in the streamline to draw the wind rolled sand, paper, leaves or snowflakes, along with the airflow movement to strengthen the momentum of the wind, resulting in feishazoushi, snow-like effect.
When you paint on a celluloid sheet, in addition to the line on the animated paper with pen strokes or directly with a brush, you can also use a pen to spray color outside the range of animation lines to enhance its screen effect.

★ Chapter II Fire
Fire is the light and flame emitted by a combustible object (solids, liquids, and gases) when it burns, and it is a natural phenomenon that often needs to be manifested in cartoons. Animation shows fire, mainly depicting the movement of flames. Therefore, we must study the motion law of the flame.
In addition to the occurrence, development and extinction of the object in the combustion process, the flame changes its shape, and the irregular curve movement occurs due to the influence of the airflow strength. In general, we can generalize the basic motion state of the flame into the following seven kinds, expand, shrink, sway, rise, drop, separate and disappear. These seven basic motion states and irregular curve motions are the basic laws of flame motion. Whether it be a small flame or a raging fire, their movements are inseparable from this basic law. Here is a description of how the fire behaves:
The expression of a small flame:
The small flame's movement characteristic is the lock breaks, jumps, changes many. Can use more than 10 pictures to show its shaking, rise, down, separation and other different motion state.
The painting can be painted one by one, without adding or less in the middle. The entire 16-piece set of loops in the picture can be used for irregular loops during filming. For example: can increase performance, the next collection of L, 2, 13, 14, 15, 16, such as repeated circulation several times, and then interspersed with the performance of a group of animation repeated rotation several times, and then interspersed performance up or down the animation. In this way, you can make the action a little more varied than when you shoot in a single loop. At the same time, you can also draw a part of the animation to perform the process of filming, to enhance its jumping, swaying feeling.
Second, the performance of a larger number of fires (such as firewood, fire, etc.):
A slightly larger fire, in fact, is composed of a few small flames, its action laws and small flames are basically the same, but the speed of action is slower than the small flames. Generally speaking, the performance of such a fire, painting 10 or so original painting is enough. If in the shooting, and then use part of the animation method to change speed, and interspersed with some irregular cycle, the action changes more.

Third, the fire performance methods:
The fire is made up of a lot of small flames, and if a dotted line is used to frame many curved lines, it becomes a large flame, which, if taken out of a part, is a small flame. To connect the two fires is a pile of bigger fires.
In the performance of fire, we should pay attention to deal with the whole and local relations: the overall movement speed slightly slower, local (small flames) of the movement speed a little faster; each small flame changes more than the overall motion as it moves. Therefore, in the design of key actions (original painting), we should pay attention to the overall shape of the movements and speed, but also pay attention to each group of small flames of action changes (expansion, contraction, shaking, rising, down, separation, disappearance, etc.) and speed. At the same time, whether the original painting or animation, should conform to the law of the Curve movement.
Four, the fire of the extinction:
When the fire is extinguished, a part of the flame separates, rises, disappears, and some of the flames shrink downward, disappear, and smoke.

★Chapter III Water
In cartoons, water is often present. Static water, as long as the painting in the background on the line, the movement of water, it needs to be depicted by animation. Water is a thin, transparent liquid. Generally, liquids are always flowing from high to low. However, when it is subjected to strong force, it will also spray upwards or go high. The water dynamic is very rich, from a drop of beads rolling to the sea of the rough, really changeable, the diversity. Below, we describe several methods of water expression respectively:
First, water droplets:
Water has the surface tension, therefore, a drop must accumulate to a certain amount, will drip down. Its movement law is: accumulates, separates, shrinks, then opens accumulates, again separates, again shrinks. Generally speaking, the accumulation speed is relatively slow, the movement is small, draws the number of sheets to be more, the separation and the contraction fast, the movement is big, the picture number should be relatively few.
Second, spray:
Water will splash when it encounters a collision. After splashing, it spreads around and lands. When splashing, the speed is faster, when the highest point, the speed gradually slowed down, scattered down, speed and gradually accelerated. When the object falls into the water, its size, height and speed are closely related to the volume, weight and descent rate of the object, and should be noticed when designing the animation.
Third, the surface of the ripples:
The object falls into the water and ripples round and round the surface. The surface object swims, the ship travels, will form the Herringbone ripple in the water surface, the gentle breeze blows, the calm water will form the beautiful ripple.
1) Graphic Ripple: The ripple caused by the object falling into the water is diffused by the center outward, the circle is bigger and larger, gradually separating and disappearing.
The hydrosphere from formation to disappearance, about eight original paintings, each two original picture can add seven animation. Each shot of a cell, the time is two seconds and a half (fast), each shot two cells, the time is five seconds (slow).
2 Herringbone Ripple: When the object travels in the water, it delimits the water, forming the herringbone ripple. Herringbone Ripple from the sides of the object spread outward, and to the object in the opposite direction of stretching, separation, disappearance, its speed should not be too fast, between the two original painting can add five to seven animation. Pictured above, the wave pattern of the hull as it travels in a calm water is recorded according to the test.
3 Ripple: A breeze blows, skimming the still water surface, the wind and water friction form ripples, if the wind blows to the slope of ripples, it becomes a small wave.
The simplest way to show this ripple is to draw a few wavy lines to make it active. Between the two original pictures by the curve of the law of Motion plus five to seven animation, each shot one or two lattice, you can cycle shooting.
The other way is to put the color of the water on two long celluloid sheets, then use bamboo pen to scrape out transparent ripple, when shooting, will two long celluloid piece fixed in two track respectively, move to the opposite direction by the grid, at the same time, at the bottom of the day on the film to play strong light, can cause the sparkling effect.
Use celluloid to do two waveform watermark, close to a few, far more dense.
Four, water:
1 The water surface spot movement, the performance water, this method is relatively simple. As long as in a long celluloid film painted a few light spots, placed in the background of the painting with the surface of the water, the cell-by-move, filming, can cause the calm of the surface slowly flow effect.
2) through the movement of parallel corrugated lines, the performance of water. In order to enhance its sense of movement, in each group of parallel corrugated line of the front, add some spray and thief up small water beads. As shown in figure:
3 The movement of the irregular curve-shaped watermark shows the running water. As shown in figure:
Each curve of the original picture of the watermark, shape should be changed to avoid mechanical. At the same time, the middle of the painting must find the right position, painting the process of change, can not be fast and slow.
4 The movement of arc and curved water flow, the performance of the fast flowing waters, such as waterfalls, eddies and so on.
V. Water waves:
The waves in the rivers are made up of thousands of rows of volatile water waves, with wind speed and wind direction more stable, the rise of a row of waves, pushing and disappearing more regularly. In the case of variable wind speed and wind direction, large and small waves, sometimes combined, sometimes mixed, sometimes conflict. After the conflict, some disappeared, some continue to exist, by the wind propulsion, the original wave disappeared, and constantly emerging new waves, one after another, the ever-changing, dazzling.
Waves are like undulating mountains, with peaks and troughs.
In expressing the waves of the sea, in order to enhance the depth of the perspective of the distance, often divided into a, B, c three to draw, C-layer painting waves, B-layer painting in the waves, a layer of distant small waves, big waves near, action, speed, the second wave, small waves in the distance, the speed is slower. Because the speed is different, draws separately, also relatively easy to grasp.
Six, the Reflection:
An object reflected in the calm water, as the image in the mirror, as long as the tone down a little bit on the line. In the rough water, can not see the reflection, animation performance, the main object reflected in the microwave rippling water on the reflection. This reflection, there are two methods of expression: one is to use water watermark glass to create a reflection of the shaking, this method is relatively simple, as long as the object reflected in the water on a few pieces of color, shooting, the top of a watermark glass, by the top down by the move, these color blocks will shake up Another way is to use the animation to draw a picture of the shaking process of the reflection.

★Fourth Chapter Rain
In cartoons, there are often rain shots.
Rain is generated in clouds, clouds of small water droplets or small crystals collide with each other, merging increase, forming raindrops. When the rising air cannot hold it, it falls from the sky and becomes rain. The volume of rain is very small, the speed of landing faster, therefore, only when the rain is relatively large or close to our eyes, we can see the shape of the general. In more cases, the rain we see in our eyes is often a slender translucent line formed by the temporary effect of vision. Therefore, the animation in the performance of the lens of rain, is generally painted a number of different lengths of the line skim the screen. Rain from the sky, it is vertical, because the wind is often accompanied by it, so we see the raindrops, often are oblique down. Here are two ways to perform:
One, with the animation performance rain:
When it rains, there is often a relatively broad rain, in order to show the depth of the perspective of distance, can be divided into three layers to draw.
1. Front layer: Draw the more stubby straight line, mixed with some water points, each animation distance between the larger, faster;
2. Middle: The thickness of the painting is moderate and longer straight, than the front layer can be slightly more dense, the distance between each animation is slightly closer than the front layer, the speed is medium;
3. Back layer: Draw a thin and dense straight line, composed of a piece of the performance of a more distant rain, each animation of the distance between the middle and more close, slower;
4. The front, middle and rear three layers together, to shoot, you can show a deep sense of depth and distance. The rain is not necessarily parallel, but also a slight change. The different speeds of the three-layer rain can be distinguished by the size of the distance and the number of animation sheets.
Draw a set of rain that can be photographed multiple times, the front layer should draw at least 12-16 sheets, at least 16-20 at the middle, and at least 24 to 32 at the back layer, that is, at least one times more than the number of sheets needed to skim the screen, so that you can draw two sets of animations that change the composition, cycle up, is not to appear monotonous.
The color of the rain, should be based on the background color of the deep light to set, the general use of gray or gray, just strokes, do not need to paint.
The animation of the rain can be photographed with other scenery at the same time, one exposure, but also can be separately photographed, two exposure (if the celluloid layer too much, affect color). Two exposure method is: first with 100% of the exposure to shoot other scenery, and then rewind the film back, with 50% of the exposure of the animation to shoot the rain (below the black bottom), using the two exposure method of the rain, more transparent sense.
Ii. performance of rain by means of special effects:
On the two celluloid tablets covered with black (to apply thick, make it opaque), and then with a bamboo pen to scratch a transparent line.
With two exposures or multiple exposures, shoot the other scenes first, then shoot the rain. When the rain, the bottom of a light sky, play strong light; Two celluloid films are placed on the upper layer, a celluloid film is fixed, b celluloid film left-by-grid movement, moving distance according to the speed of rain landing to decide. The moving distance is big, the Raindrop falls fast, the distance is small, the speed is slow. Moving direction can not be mistaken, otherwise, the raindrops will fly upwards, rather than to the whereabouts, the amount of exposure should be associated with the brightness of the light of the day to consider.
If you think a layer of rain is too thin, you can rewind the film back, and then shoot once or two times. However, it should be noted that the change in specifications is the size of each layer of rain change.

★ Fifth Chapter Snow
When the temperature is below 0 degrees Celsius, the water vapor in the cloud is directly condensed into white crystals falling down in a group of snow. Snowflakes are large, light weight, in the process of falling, by the impact of air flow, will be fluttering with the wind. Here are two ways of showing snow:

One, the performance of snowflakes fluttering in the breeze, gently fall:
1, performance of snow method and performance of the method of rain is similar, in order to show the depth of perspective, can also be divided into three layers to draw: the front layer of snow flowers, middle-level painting snowflakes, the back layer of small snowflakes, together shooting.
2, three layers of snow each draw a design draft, draw the snow falling motion line, the movement line is irregular "S" shape curve. Snow total movement trend is falling downward, but there is no fixed direction, in the falling process, can appear to the rise of the action, and then drift down. Some snowflakes in the process of falling meet, can be merged into a larger snowflakes, continue to fall.
3, the front layer of large snowflakes each between the movement distance, slightly faster, the middle second, the lower layer distance, slow, but the total falling speed is not too fast.
4, draw a set of snowflakes falling action, can be repeatedly used. Each animation is usually shot in two lattice, in order to make the speed change, the middle can also wear some clap a lattice. In order to make the picture not repeat in the cycle, in the animation design, should consider each layer of Zhang save different, staggered each layer of the cycle point.
5, snowflakes and other scenes can be photographed at the same time, you can also exposure, separate shooting, separate shooting, if the image of snowflakes should be softer, the focus can be dealt with a little more empty.
6, the design of the specific drawings are as follows:
After designing the motion line of the snowflake, the number of sheets needed to be drawn between two positions in determining the position of each snowflake. Generally each layer can draw nine, from 1 to 9, the Middle plus 7. Do not need to add animation, you can follow the design of the position on the manuscript, with a brush dip white a sheet of snow directly to the celluloid film. To make it easier to see, you can use a variety of colored pencils to mark the location of each snowflake in the design.
Second, Performance Blizzard:
1. This kind of snow movement speed is very fast, generally only then several lattice can skim the picture.
2. Because of the speed of the movement, so the design does not need to draw the movement of each snowflake, and do not have to clearly mark the front and back of each snowflake position. Just design the entire snowflake movement line and the distance between each picture can be.
3. When drawing, can use dry pen dip dry white, according to the position of the design manuscript, directly on the celluloid chip point out large and small snowflakes, but also appropriate to add some streamline.
4. Each one can be photographed at the same time with other scenes, can also be exposed twice, separate shooting.

★Sixth chapter Smoke

Smoke is a combustible substance (such as firewood, coal, oil, etc.) in the combustion occurs when the gas-like objects. Because the composition of various combustible substances is not the same, so the color of smoke is also different: some are black, some green gray, some yellow-brown, and so on. At the same time, because the combustion process is different, the concentration of smoke is not the same-burning incomplete, smoke is strong, burning completely, smoke lighter, even almost no smoke.
The shape of flue gas and its diffusion form are closely related to the stability of the lower atmosphere. For example, smoke emitted from chimneys can be divided into the following forms:
1. Wave type: The flue gas in an unstable gas layer fluctuates greatly from top to bottom, wavy and diffused along the dominant wind direction.
2. Cone type: In the medium stable gas reservoir or when the wind is strong, the flue gas is tapered and flows along the dominant wind direction.
3. Fan type: In the stable gas layer (i.e. inversion), the general wind speed is very weak, smoke in the upper and lower direction of almost no diffusion, from top to bottom, smoke into a fan-shaped, such as from the side look, it is belt type.
4. Ridge type: During the day the unstable gas layer, starting from the day behind the ground cooling, it becomes a stable layer, the upper layer appears unstable layer. As a result, the smoke does not spread downward, but only the upward side of the spread, the ridge type.
5. Smoke type: The morning sun shines warm the ground and close to the ground air, the formation of the lower atmosphere at night the stable layer from below began to destroy, so that smoke in the top non-proliferation, only below the spread, known as smoke-type. At this time, the general wind is weak, flue gas with a lag, high concentration.
This shows that the air flow on the shape and movement of smoke is greatly affected. Therefore, we design smoke in the cartoon shape and action, also according to the script in accordance with the situation, choose the appropriate way of expression. Cartoon performance smoke, generally can be divided into smoke and light smoke two categories. The smoke modelling takes the Floc form more, uses the color to be deep, and divides into two levels, the light smoke modelling takes the ribbon and the line shape, uses the transparent color or the relatively shallow color.
In addition, also can not by strokes, color, directly with a pen to spray colors on the celluloid film. Light smoke in general as long as the appearance of the whole body of the movement and changes, such as stretching, swaying, bending, separation, thin, disappear and so on. In addition to the movement and variation of the whole body shape, the smoke sometimes shows a movement of smoke balls tumbling up and down throughout the smoke.
In practical work, it is also necessary to change on this basis, such as: some smoke ball gradually enlarged, some gradually narrowed, some merged, some separated from each other, some roll faster, some tumble slowly. At the same time, we should also pay attention to the overall shape of the smoke changes, generally speaking, the whole body of the movement speed can be slow, smoke body part of the smoke ball movement speed can be slightly faster, and strive to show the momentum of smoke, and not appear mechanical, inflexible.

Here are two sets of animations that show smoke:
Dense smoke density, its morphological changes are less, disappear more slowly.
The light smoke density is small, the posture is lightsome, the change is more, disappears relatively quickly.
In the case of relatively stable airflow, light smoke-filled, rising slowly, soft and graceful movements, its movement law, is basically a curve movement, stretching, twisting, echoing, separation, change, disappear.

A group of light smoke dynamics is described below.
Smoke action design Draft after painting, you can first draw the original painting, and then add animation, you can also follow the design of the general position of the draft, along with the momentum of the smoke a picture of the next painting. Light smoke coated transparent color, can be photographed with other scenery at the same time, a exposure, coated opaque color, with two exposure method shooting, the effect is better.
The method of expression of Qi is similar to that of smoke. Such as: The performance of the food is hot, can be used ribbon linear light smoke expression method, a more powerful vapor (such as a train siren or a steam kettle) can be used in the form of a floc smoke, painted white, but the speed should be faster when it starts to rush out, and some streamline is added.

★Seventh Chapter Cloud

Empty clouds have high and low, high is more than 10,000 meters, low only dozens of meters, sometimes with the ground fog into one. In fact, clouds and fog are essentially the same, but they are very different in height. When the fog rises on the ground, we don't call it fog, it's called a cloud. The main cause of cloud formation is the rising movement of moist air. Humid air in the rising process, the temperature gradually reduced, in a certain temperature, some blisters attached to the air in the smoke particles dust into small water droplets or small ice crystals, collectively known as cloud droplets. Small and dense cloud droplets are gathered together and are suspended by the rising air currents, becoming clouds in the air.
The shape of the cloud is changeable. Some of the body is relatively strong, such as the castle Clouds, pagoda clouds, steamed bread clouds, and some relatively light, such as banded clouds, hook-like clouds, floc clouds, scales, clouds, etc., and some heavy, such as thunderstorm clouds clouds of the sky, such as the black hanging ball cloud. Due to the convection of the air and the movement of the interior of the cloud, the shape of the cloud changes constantly, some expand, some shrink disappear, some are separated from each other, and some rise together. In addition to a few cases (such as black clouds tumbling, whirlwind, etc.), the cloud movement faster, generally speaking, the speed of the clouds are relatively slow and soft.
In most cartoons, the cloud is painted on the background, in addition to moving with the background, not to show the movement of the cloud itself. But in some cartoons, it is also necessary to directly depict the movement of the cloud itself, sometimes in order to render the atmosphere, sometimes the cloud as a personification of the role. This is mainly about the movement of the cloud as a natural form.
In the cartoon cloud modelling, basically has two kinds: one kind is more realistic (may draw the line, the color, may also directly use the pen to spray the colour on the celluloid piece); The movement of the cloud can first draw the original picture, then add animation, you can also draw a good design after the move, a picture of the order of painting down. The shape of the cloud must be constantly changing, otherwise it is easy to be stiff, but the action must be gentle, the speed must be slow.
There are generally two ways to perform fog: one is to treat the fog into ribbons, with transparent color on the celluloid film, the action must be gentle and slow; another way is to use a pen to spray white directly on a long glass or long celluloid film. When shooting, fixed on the mobile track, move the grid, to shoot. Fog can not spray too thick, and to have changes, some places can be slightly thicker, some places spray thin some, otherwise can not cause the effect of moving.

★Eighth Chapter Lightning

Thunder and lightning, often occurs in the air convection extremely exuberant thunderstorm season. The Thunder cloud is electrically charged, with a positive charge on one side and a negative charge on the other. When the charged clouds between positive and negative charges, or clouds and clouds outside the positive and negative charges between the electromagnetic field difference, large to a certain extent, the positive negative will attract each other, resulting in spark discharge phenomenon. A strong flash, called lightning, generated by a spark discharge. Discharge when the temperature is very high, so that the sudden expansion of the air, water droplets gasification, making a huge noise, that is, thunder.
The light of lightning has a relatively vertical and relatively flat slant. Local thunderstorm clouds, generally vertical development, lightning light belt from top to bottom, called "Straight Thunder": regional thunderstorm clouds, often have a flat bevel, therefore, lightning light belt more flat oblique, called "Horizontal thunder."
Lightning speed quickly, by a "pilot blitz" began, followed by the "Main Blitz", and then the main blitz came a series of discharges, the number can reach more than 20. Because the whole discharge process is usually only half a second or so, so the naked eye can not distinguish, can only feel a series of obvious flashes. By contrast, the Thunder lasts much longer, sometimes even for a minute.
There is not much lightning in the cartoon, sometimes according to the needs of the plot, in order to render the atmosphere, but also to display thunder and lightning. Cartoon performance of Lightning, in addition to directly depict lightning when the sky appears in the light band, often to catch the lightning when the strong flash on the surrounding scenery of the impact, to emphasize. The sky of lightning, always cloudy, the surrounding scenery, are also relatively gloomy. When the lightning suddenly appeared, people's eyes were stimulated by strong light, feel the eyes of a white, the pupil quickly received small; After the flash of lightning, because the pupil is still too late to enlarge, the eyes seem to be a black, the pupil back to normal, before the sight of lightning. Therefore, its Basic Law is: normal (gray)--light (can be stressed to complete white)--slightly (can be emphasized to complete black)--normal (gray). In half a second of the discharge process, a lot of lightning, and we only have 12 of the film, so can only be simplified, in more than 10 of the film, flashing two or three times.
The lens that shows lightning, generally want to draw three of scenery exactly the same and the background of great difference of light and shade: (1) Ash-cloudy days, (2) light-a very bright day (cold hue) in a strong electro-optic glow, and (3) dark-overcast night views.
In addition, you can add a piece of white paper and a piece of black, when shooting, alternating, each shot one or two lattice, if it is daylight, the order is as follows: If it is night, the order is: 6, 2, 3, 4, 5, 6.
Here are several ways to show Lightning:
First, the direct emergence of lightning light belt:
Flash bands generally have two kinds of drawing, one is the tree type, one is pattern. Figure: From scratch to disappear about seven animations, except 4 can be shot one or two extra, the rest are taken one square.
If with other scenery at the same time exposure shooting, the Lightning light band can be coated with white or light blue, lavender.
If two exposures are taken separately from the other scenes, the Lightning light bands are not painted and the remainder is covered with opaque black. The second exposure to the Lightning light band, the bottom of the day on the film White Light or light blue, lavender. Two times exposure, lightning light band of high brightness, the effect is strong.
The light and dark changes in the background when the Lightning band appears.
Second, does not directly depict the Lightning light belt:
Only the sharp changes in the lightning light on the scenery, but also can cause lightning effects.

★Nineth Chapter Explosion

When some substances are heated or burned, the volume suddenly increases by more than thousand times, then the explosion occurs. Explosions are sudden, violent and fast. Cartoon performance explosion, mainly from the following three aspects to describe:
1. a strong flash;
2. A variety of objects that are blown up to fly;
3. Smoke from the explosion.
A strong flash:
Flash process is very short, generally only 8,112 lattice (1/31 l/2 seconds), in general there are the following three methods of expression:
1. With the deep light difference very big two color mutation, the performance flash strong effect. This approach is similar to the way lightning is performed.
2. Radial flash appears, tear from the center, burst, also can show the strong effect of flash.
3. Using the fan-diffusion method, the flash can be divided into several layers.
The color of the flash varies with the ingredients of the explosive, white, yellow, blue, purple, and so on.
Second, the various kinds of objects blown up:
The various objects blown up include fragments of the explosive itself, gravel and dust, and the plot of the bombed object.
Blown up by the explosion of the various objects from the center of the parabola to spread around, its speed in addition to a variety of objects of their own size and weight of the difference, the beginning of the flying out of the speed is relatively fast, near the highest point when the speed slowed down, landing and gradually accelerated. The scene is large, the distance is slow, often up to a few seconds before landing down, small, close to the speed, just a few grid can fly out of the picture. When designing an action, you can first draw the line of motion of the main blown object (the distance is a parabola, the distance from near to the fan diffuser), and determine the order of flight. In order to express depth, it is also necessary to determine which objects fly from small to large, which from large to small.
Third, the explosion of smoke:
Because the explosives contained in different raw materials, smoke explosion when the color is not the same, there are white, yellow, green and gray, and so on, the movement of smoke is in the rolling gradually spread, disappear, slow speed.