Java - 通过设置绘制多维数据集的面的点的位置来设置旋转
我使用tesselator在我的世界中这样做......但这并不重要。
Bacisally我正在使用顶点绘制一个立方体。 每张脸都有4个位置。
首先看世界坐标。我按照这个顺序添加顶点/面的位置：DCBA ..你以后会得到它......（希望如此）
基于此，这是我绘制立方体的方式：
public void renderParticles(World w, float x, float y, float z, Tesselator t)
{//**THIS IS AN EXAMPLE METHOD**
int scale = 1;
Random r;
int rotX = r.NextInt(10);
int rotY = r.NextInt(10);
int rotZ = r.NextInt(10);
//front face
t.addVertex(x, y, z);
t.addVertex(x, y + scale,z);
t.addVertex(x + scale,y + scale,z);
t.addVertex(x + scale,y, z);
//left face (I might have the Z coords wrong but that doesnt matter right now - basically the other direction)
t.addVertex(x, y, z + scale);
t.addVertex(x, y + scale,z + scale);
t.addVertex(x, y + scale,z);
t.addVertex(x, y, z);
//back face
t.addVertex(x + scale,y, z + scale);
t.addVertex(x + scale,y + scale,z + scale);
t.addVertex(x, y + scale,z + scale);
t.addVertex(x, y, z + scale);
//right face
t.addVertex(x + scale,y, z);
t.addVertex(x + scale,y + scale,z);
t.addVertex(x + scale,y + scale,z + scale);
t.addVertex(x + scale,y, z + scale);
//top face
t.addVertex(x, y + scale,z);
t.addVertex(x, y + scale,z + scale);
t.addVertex(x + scale,y + scale,z + scale);
t.addVertex(x + scale,y + scale,z);
//bottom face
t.addVertex(x, y, z + scale);
t.addVertex(x, y, z);
t.addVertex(x + scale,y, z);
t.addVertex(x + scale,y, z + scale);
}
当这个立方体产生/绘制时，我希望它已经随机旋转。
我不知道这样的核心数学......
为什么我不在minecraftforge论坛上发帖？
- 此代码所在的mod是coremod（他们不支持它们）
- 实际上已经抓过了他们，他们告诉我先把它变成普通模式。
任何想法我怎么可能旋转这个立方体然后（我希望我正确地写了所有立方体面：D）？
修改
这是我现在正在使用的代码，因为我将其更新为mc版本1.10：
/**
* Renders the particle
*/
public void renderParticle(VertexBuffer worldRendererIn, Entity entityIn, float partialTicks, float rotationX,
float rotationZ, float rotationYZ, float rotationXY, float rotationXZ) {
float f = ((float) this.particleTextureIndexX + this.particleTextureJitterX / 4.0F) / 16.0F;
float f1 = f + 0.015609375F;
float f2 = ((float) this.particleTextureIndexY + this.particleTextureJitterY / 4.0F) / 16.0F;
float f3 = f2 + 0.015609375F;
float f4 = 0.1F * this.particleScale;
if (this.particleTexture != null) {
f = this.particleTexture.getInterpolatedU((double) (this.particleTextureJitterX / 4.0F * 16.0F));
f1 = this.particleTexture.getInterpolatedU((double) ((this.particleTextureJitterX + 1.0F) / 4.0F * 16.0F));
f2 = this.particleTexture.getInterpolatedV((double) (this.particleTextureJitterY / 4.0F * 16.0F));
f3 = this.particleTexture.getInterpolatedV((double) ((this.particleTextureJitterY + 1.0F) / 4.0F * 16.0F));
}
float f5 = (float) (this.prevPosX + (this.posX - this.prevPosX) * (double) partialTicks - interpPosX);
float f6 = (float) (this.prevPosY + (this.posY - this.prevPosY) * (double) partialTicks - interpPosY);
float f7 = (float) (this.prevPosZ + (this.posZ - this.prevPosZ) * (double) partialTicks - interpPosZ);
int i = this.getBrightnessForRender(partialTicks);
int j = i >> 16 & 65535;
int k = i & 65535;
if (Minecraft.isFancyGraphicsEnabled() == true) {
if (spawned == false) {
this.particleRed *= 1.35F;
this.particleGreen *= 1.35F;
this.particleBlue *= 1.35F;
spawned = true;
}
// front
worldRendererIn.pos(f5 + f4, f6, f7 + f4).tex((double) f, (double) f2)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5 + f4, f6 + f4, f7 + f4).tex((double) f, (double) f3)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5, f6 + f4, f7 + f4).tex((double) f1, (double) f3)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5, f6, f7 + f4).tex((double) f1, (double) f2)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
// back
worldRendererIn.pos(f5, f6, f7).tex((double) f1, (double) f3)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5, f6 + f4, f7).tex((double) f1, (double) f2)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
// done
worldRendererIn.pos(f5 + f4, f6 + f4, f7).tex((double) f, (double) f2)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5 + f4, f6, f7).tex((double) f, (double) f3)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
// left
worldRendererIn.pos(f5, f6, f7 + f4).tex((double) f1, (double) f2)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5, f6 + f4, f7 + f4).tex((double) f, (double) f2)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5, f6 + f4, f7).tex((double) f, (double) f3)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5, f6, f7).tex((double) f1, (double) f3)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
// right
worldRendererIn.pos(f5 + f4, f6, f7).tex((double) f, (double) f3)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5 + f4, f6 + f4, f7).tex((double) f1, (double) f3)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5 + f4, f6 + f4, f7 + f4).tex((double) f1, (double) f2)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5 + f4, f6, f7 + f4).tex((double) f, (double) f2)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
// top
worldRendererIn.pos(f5, f6 + f4, f7).tex((double) f1, (double) f3)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5, f6 + f4, f7 + f4).tex((double) f1, (double) f2)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5 + f4, f6 + f4, f7 + f4).tex((double) f, (double) f2)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5 + f4, f6 + f4, f7).tex((double) f, (double) f3)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
// bottom
worldRendererIn.pos(f5, f6, f7 + f4).tex((double) f, (double) f2)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5, f6, f7).tex((double) f, (double) f3)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5 + f4, f6, f7).tex((double) f1, (double) f3)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5 + f4, f6, f7 + f4).tex((double) f1, (double) f2)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
} else {
worldRendererIn
.pos((f5 - rotationX * f4 - rotationXY * f4), (double) (f6 - rotationZ * f4),
(double) (f7 - rotationYZ * f4 - rotationXZ * f4))
.tex((double) f, (double) f3).color(this.particleRed, this.particleGreen, this.particleBlue, 1.0F)
.lightmap(j, k).endVertex();
worldRendererIn
.pos((double) (f5 - rotationX * f4 + rotationXY * f4), (double) (f6 + rotationZ * f4),
(double) (f7 - rotationYZ * f4 + rotationXZ * f4))
.tex((double) f, (double) f2).color(this.particleRed, this.particleGreen, this.particleBlue, 1.0F)
.lightmap(j, k).endVertex();
worldRendererIn
.pos((double) (f5 + rotationX * f4 + rotationXY * f4), (double) (f6 + rotationZ * f4),
(double) (f7 + rotationYZ * f4 + rotationXZ * f4))
.tex((double) f1, (double) f2).color(this.particleRed, this.particleGreen, this.particleBlue, 1.0F)
.lightmap(j, k).endVertex();
worldRendererIn
.pos((double) (f5 + rotationX * f4 - rotationXY * f4), (double) (f6 - rotationZ * f4),
(double) (f7 + rotationYZ * f4 - rotationXZ * f4))
.tex((double) f1, (double) f3).color(this.particleRed, this.particleGreen, this.particleBlue, 1.0F)
.lightmap(j, k).endVertex();
}
}
1 个答案:
答案 0 :(得分：1)
tessellator.addVertexWithUV(vertexX, vertexY, vertexY, U,V)并且不要tessellator.draw()而是 // front
worldRendererIn.pos(f5 + f4, f6, f7 + f4).tex((double) f, (double) f2)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5 + f4, f6 + f4, f7 + f4).tex((double) f, (double) f3)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5, f6 + f4, f7 + f4).tex((double) f1, (double) f3)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
worldRendererIn.pos(f5, f6, f7 + f4).tex((double) f1, (double) f2)
.color(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha).lightmap(j, k)
.endVertex();
，所以你有纹理顶点。
并且不要忘记最后致电 //OpenGL enable/blend functions/etc... here
// for example GL11.glScalef(scale, scale, scale);
worldrenderer.begin(7, DefaultVertexFormats.POSITION_TEX_COLOR_NORMAL);
// your vertex defining code
// your vertex defining code
// your vertex defining code
worldRendererIn.normal(0.0f, 0.0f, 1.0f);
tessellator.draw();
// OPENGL disable code here
。
有助于了解偏航，俯仰和俯仰http://howthingsfly.si.edu/flight-dynamics/roll-pitch-and-yaw
修改
好的，你的代码是这样的，这是一个完整的四边形。
{{1}}
要绘制四边形，您需要设置世界渲染器模式
{{1}}
最后一行，tesselator.draw（）将确保它被绘制到屏幕上，顶点缓冲区被刷新为一个单独的显示列表。
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