Granted Patent B2

US 12,567,193 · App. 18/551,738 · Granted Mar 3, 2026

Inventors: Liyou Xu (Beijing, CN); Jinyuan Wu (Beijing, CN)

Assignee: Beijing Zitiao Network Technology Co., Ltd.

G06T15/00G06T7/50G06T7/73G06T13/00G06T2210/21G06T2210/56

Abstract

Claims (95)

1 . A particle rendering method, comprising:

obtaining state information of a target particle, wherein the state information of the target particle comprises values carried by a preset number of bits;

determining whether the state information is first state information indicating that no collision with the target particle occurred or second state information indicating that a collision with the target particle occurred;

in response to determining the state information being the first state information:

obtaining a fall duration of the target particle, wherein the fall duration of the target particle is obtained based on a time when the particle starts to fall and a current time;

obtaining a first position based on the fall duration and a fall speed of the target particle; and

rendering the target particle to be at the first position;

in response to determining the state information being the second state information:

obtaining a collision time of the target particle, the collision time indicating a fall duration of the target particle before the collision occurred;

obtaining a second position based on the collision time and the fall speed of the target particle; and

rendering the target particle to be at the second position.

2 . The particle rendering method according to claim 1 , further comprising:

obtaining a first depth value and a second depth value after obtaining the first position, the first depth value being a depth value of the first position in a screen space, and the second depth value being a scene depth value corresponding to the first position in the screen space;

determining whether the first depth value is greater than the second depth value;

in response to determining the first depth value being greater than the second depth value, changing the state information of the target particle to second state information indicating that a collision with the target particle occurred, and storing the fall duration as a collision time of the target particle, the collision time indicating a fall duration of the target particle before the collision occurred.

3 . The particle rendering method according to claim 2 , wherein the obtaining the first depth value comprises:

obtaining coordinate values of the first position in a world space based on coordinate values of the first position in a local space and a model matrix;

obtaining coordinate values of the first position in a view space based on coordinate values of the first position in the world space and a view matrix;

obtaining coordinate values of the first position in a clip space based on the coordinate values of the first position in the view space and a projection matrix;

normalizing the coordinate values of the first position in the clip space to obtain coordinate values of the first position in the screen space; and

obtaining the first depth value based on the coordinate values of the first position in the screen space.

4 . The particle rendering method according to claim 1 , further comprising:

in response to determining the state information being the second state information:

obtaining a collision position of the target particle, the collision position indicating a position where the target particle located when the collision occurred; and

rendering the target particle at the collision position.

5 . The particle rendering method according to claim 1 , further comprising:

obtaining a first depth value and a second depth value after obtaining the first position, the first depth value being a depth value of the first position in a screen space, and the second depth value being a scene depth value corresponding to the first position in the screen space;

determining whether the first depth value is greater than the second depth value;

in response to determining the first depth value being greater than the second depth value, changing the state information of the target particle to second state information indicating that a collision with the target particle occurred, and storing the first position as a collision position of the target particle, the collision position indicating a position where the target particle located when the collision occurred.

6 . The method according to claim 5 , wherein obtaining the first depth value comprises:

obtaining coordinate values of the first position in a world space based on coordinate values of the first position in a local space and a model matrix;

obtaining coordinate values of the first position in a view space based on coordinate values of the first position in the world space and a view matrix;

obtaining coordinate values of the first position in a clip space based on the coordinate values of the first position in the view space and a projection matrix;

normalizing the coordinate values of the first position in the clip space to obtain coordinate values of the first position in the screen space; and

obtaining the first depth value based on the coordinate values of the first position in the screen space.

7 . The particle rendering method according to claim 1 , further comprising:

controlling the particle to return to an initial position thereof and resetting the fall duration of the particle to zero when the fall duration of the particle reaches a duration threshold, and updating the state information of the target particle with the first state information.

8 . An electronic device, comprising:

a memory for storing a computer program; and

a processor that, when executing the computer program, causes the electronic device to implement a particle rendering method comprising:

obtaining state information of a target particle, wherein the state information of the target particle comprises values carried by a preset number of bits;

determining whether the state information is first state information indicating that no collision with the target particle occurred or second state information indicating that a collision with the target particle occurred;

in response to determining the state information being the first state information:

obtaining a fall duration of the target particle, wherein the fall duration of the target particle is obtained based on a time when the particle starts to fall and a current time;

obtaining a first position based on the fall duration and a fall speed of the target particle; and

rendering the target particle to be at the first position;

in response to determining the state information being the second state information:

obtaining a collision time of the target particle, the collision time indicating a fall duration of the target particle before the collision occurred;

obtaining a second position based on the collision time and the fall speed of the target particle; and

rendering the target particle to be at the second position.

9 . The electronic device according to claim 8 , wherein the processor is configured to:

obtain a first depth value and a second depth value after obtaining the first position, the first depth value being a depth value of the first position in a screen space, and the second depth value being a scene depth value corresponding to the first position in the screen space;

determine whether the first depth value is greater than the second depth value;

in response to the first depth value being greater than the second depth value, change the state information of the target particle to second state information indicating that a collision with the target particle occurred, and store the fall duration as a collision time of the target particle, the collision time indicating a fall duration of the target particle before the collision occurred.

10 . The electronic device according to claim 9 , wherein the processor is configured to:

obtain coordinate values of the first position in a world space based on coordinate values of the first position in a local space and a model matrix;

obtain coordinate values of the first position in a view space based on coordinate values of the first position in the world space and a view matrix;

obtain coordinate values of the first position in a clip space based on the coordinate values of the first position in the view space and a projection matrix;

normalize the coordinate values of the first position in the clip space to obtain coordinate values of the first position in the screen space; and

obtain the first depth value based on the coordinate values of the first position in the screen space.

11 . The electronic device according to claim 8 , wherein the processor is configured to:

in response to the state information being second state information indicating that a collision with the target particle:

obtain a collision position of the target particle, the collision position indicating a position where the target particle located when the collision occurred; and

render the target particle at the collision position.

12 . The electronic device according to claim 8 , wherein the processor is configured to:

obtain a first depth value and a second depth value after obtaining the first position, the first depth value being a depth value of the first position in a screen space, and the second depth value being a scene depth value corresponding to the first position in the screen space;

determine whether the first depth value is greater than the second depth value;

in response to the first depth value being greater than the second depth value, change the state information of the target particle to second state information indicating that a collision with the target particle occurred, and store the first position as a collision position of the target particle, the collision position indicating a position where the target particle located when the collision occurred.

13 . The electronic device according to claim 12 , wherein the processor is configured to:

obtain coordinate values of the first position in a world space based on coordinate values of the first position in a local space and a model matrix;

obtain coordinate values of the first position in a view space based on coordinate values of the first position in the world space and a view matrix;

obtain coordinate values of the first position in a clip space based on the coordinate values of the first position in the view space and a projection matrix;

normalize the coordinate values of the first position in the clip space to obtain coordinate values of the first position in the screen space; and

obtain the first depth value based on the coordinate values of the first position in the screen space.

14 . The electronic device according to claim 8 , wherein the processor is configured to:

control the particle to return to an initial position thereof and resetting the fall duration of the particle to zero when the fall duration of the particle reaches a duration threshold, and updating the state information of the target particle with the first state information.

15 . A non-transitory computer-readable storage medium stored thereon a computer program that, when executed by a computing device, causes the computing device to implement a particle rendering method comprising:

obtaining state information of a target particle, wherein the state information of the target particle comprises values carried by a preset number of bits;

determining whether the state information is first state information indicating that no collision with the target particle occurred or second state information indicating that a collision with the target particle occurred;

in response to determining the state information being the first state information:

obtaining a fall duration of the target particle, wherein the fall duration of the target particle is obtained based on a time when the particle starts to fall and a current time;

obtaining a first position based on the fall duration and a fall speed of the target particle; and

rendering the target particle to be at the first position;

in response to determining the state information being the second state information:

obtaining a collision time of the target particle, the collision time indicating a fall duration of the target particle before the collision occurred;

obtaining a second position based on the collision time and the fall speed of the target particle; and

rendering the target particle to be at the second position.

16 . The non-transitory computer-readable storage medium according to claim 15 , wherein the particle rendering method further comprises:

obtaining a first depth value and a second depth value after obtaining the first position, the first depth value being a depth value of the first position in a screen space, and the second depth value being a scene depth value corresponding to the first position in the screen space;

determining whether the first depth value is greater than the second depth value;

in response to the first depth value being greater than the second depth value, changing the state information of the target particle to second state information indicating that a collision with the target particle occurred, and storing the fall duration as a collision time of the target particle, the collision time indicating a fall duration of the target particle before the collision occurred.

17 . The non-transitory computer-readable storage medium according to claim 15 , wherein the particle rendering method further comprises:

in response to the state information being second state information indicating that a collision with the target particle:

obtaining a collision position of the target particle, the collision position indicating a position where the target particle located when the collision occurred; and

rendering the target particle at the collision position.

Assignments (2)

Priority Claims (1)

Continuity (1)

References Cited (28)