Method for calculating virtual ink diffusion range based on force feedback technology
A technology of force feedback and ink, which is applied in the field of virtual drawing, can solve the problems of not considering the influence of the ink diffusion range of force factors, reduce the simulation effect of ink diffusion, etc., and achieve the effect of enhancing the simulation effect
Inactive Publication Date: 2012-12-19
DALIAN UNIV OF TECH
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[0003] Based on the research status at home and abroad, it is found that the influence of force sensory factors on the diffusion range of ink and ink is not considered in the ink diffusion simulation of virtual rendering, which reduces the effect of ink diffusion simulation
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[0049] In this specific embodiment, the drawing of a point in the virtual drawing is taken as an example to illustrate the calculation method of the range of the dark diffusion area and the light color diffusion area. The force feedback device used is Phantom Desktop, and the maximum output force is
[0050] f max= 7.9 cattle. The specific process is as follows:
[0051] 1. Establish a rice paper model, assuming that the area of a single paper element is N=1, the unit is the side length of the paper element×the side length of the paper element, the degree of absorption i=3, the unit is the number of ink particles / paper element, and the degree of diffusion d=20%;
[0052] 2. The diameter of the virtual brush used in this example is pen_size=30, the unit is the side length of the paper element, and the amount of ink output by the brush during the drawing of points is M 0 =4000 The number of ink particles (this amount is a relative amount and has no effect on the simulation e...
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A method for calculating virtual ink diffusion range based on force feedback technology belongs to the technical field of virtual drawing. Virtual force influence coefficient is introduced to divide a diffusion area into a dark diffusion area and a light diffusion area. The methods for calculating the diffusion range of the dark diffusion area and the diffusion range of the light diffusion area are provided. The method includes steps of calculating absorbing amount, calculating particle amount in the dark diffusion area, calculating the diffusion range of the dark diffusion area, calculating particle amount in the light diffusion area, calculating the diffusion range of the light diffusion area and the like. Width 2 of the light diffusion area is calculated so that the diffusion range of the light diffusion area under the influence of the virtual force is obtained. The force feedback technology is introduced into the virtual drawing, force influencing mechanism to ink diffusion during the virtual drawing is disclosed, the methods for calculating the diffusion range of the dark diffusion area and the diffusion range of the light diffusion area are provided respectively, the defect that force factors are not considered in the existing ink diffusion methods is overcome, and simulation effect of ink diffusion in the virtual drawing is improved.
Description
technical field [0001] The invention relates to the technical field of virtual rendering, in particular to a method for calculating the diffusion range of ink and ink based on force feedback technology in virtual rendering. Background technique [0002] In order to achieve the real ink diffusion effect in virtual drawing, it is necessary to simulate the ink diffusion on the basis of the rice paper model. Ink wash is composed of tiny particles, which use rice paper as a carrier and move in the cells of the rice paper. In the literature "Tosiyasu L.Kunii, G.V.Nosovskij, T.Hayashi.A Diffusion Model for Computer Animation of Diffuse Ink Painting [J]. Computer Animation, 1995", Kunii et al. abroad proposed that the diffusion of ink and ink begins with the diffusion of water. The diffusion of particles drives ink particles to move between adjacent paper cells, and the principle of dark diffusion area, light color diffusion area and diffusion boundary is expounded. Domestic resea...
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IPC IPC(8): G06F19/00
Inventor 侯增选郭超孙景华
Owner DALIAN UNIV OF TECH