本文整理汇总了Java中com.ra4king.opengl.util.math.Vector3.dot方法的典型用法代码示例。如果您正苦于以下问题：Java Vector3.dot方法的具体用法？Java Vector3.dot怎么用？Java Vector3.dot使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类com.ra4king.opengl.util.math.Vector3的用法示例。
在下文中一共展示了Vector3.dot方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: intersects
import com.ra4king.opengl.util.math.Vector3; //导入方法依赖的package包/类
public boolean intersects(Vector3 position, Vector3 delta) {
Vector3 prevPos = new Vector3(position).sub(delta);
Vector3 normal = orientation.mult3(Vector3.FORWARD, new Vector3()).normalize();
float t = new Vector3(this.position).sub(prevPos).dot(normal) / delta.dot(normal);
if(t < 0f || t > 1f) {
return false;
}
Vector3 intersection = new Vector3(delta).mult(t).add(prevPos).sub(this.position);
Quaternion inverse = new Quaternion(orientation).inverse();
Vector3 offset = inverse.mult3(intersection, intersection);
offset.mult(2.0f).sub(new Vector3(size, 0.0f)).divide(new Vector3(size, 1.0f));
return offset.dot(offset) <= 1.0f; // oval portal
// rectangular portal
// return offset.x() >= 0f && offset.x() < size.x() &&
// offset.y() > 0f && offset.y() < size.y();
}
示例2: render
import com.ra4king.opengl.util.math.Vector3; //导入方法依赖的package包/类
public void render(int currentFbo, Camera camera, Matrix4 viewMatrix, FrustumCulling culling) {
updated = false;
if(rendered)
return;
rendered = true;
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, portalFbo);
glEnable(GL_STENCIL_TEST);
glClear(GL_STENCIL_BUFFER_BIT);
// Setup stencil test: all pixels that pass depth test mark 1 in stencil buffer
glStencilFunc(GL_ALWAYS, 1, 0xFF);
glStencilOp(GL_ZERO, GL_ZERO, GL_REPLACE);
portalProgram.begin();
glUniformMatrix4(portalProgram.getUniformLocation("projectionMatrix"), false, camera.getProjectionMatrix().toBuffer());
glUniformMatrix4(portalProgram.getUniformLocation("viewMatrix"), false, new Matrix4(viewMatrix).translate(portal.getPosition()).mult(portal.getOrientation().toMatrix(new Matrix4())).toBuffer());
glUniform2f(portalProgram.getUniformLocation("resolution"), RenderUtils.getWidth(), RenderUtils.getHeight());
// Now render the portal quad, with each pixel marking the stencil buffer
glDisable(GL_CULL_FACE);
RenderUtils.glBindVertexArray(vao);
glDrawArrays(GL_TRIANGLES, 0, 6);
glEnable(GL_CULL_FACE);
glStencilFunc(GL_EQUAL, 1, 0xFF);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
portalCamera.setCamera(camera);
portal.transform(portalCamera.getPosition(), portalCamera.getOrientation());
Vector3 destNormal = portal.getDestPortal().getOrientation().mult3(Vector3.FORWARD, new Vector3()).normalize();
Vector4 portalPlane = new Vector4(destNormal, -destNormal.dot(portal.getDestPortal().getPosition()));
Vector3 normal = portal.getOrientation().mult3(Vector3.FORWARD, new Vector3()).normalize();
if(camera.getPosition().dot(normal) - normal.dot(portal.getPosition()) > 0) {
portalPlane.mult(-1f);
}
worldRenderer.render(portalPlane, portal, portalFbo, portalCamera);
glDisable(GL_STENCIL_TEST);
glDisable(GL_CULL_FACE);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, currentFbo);
portalProgram.begin();
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, portalTexture);
RenderUtils.glBindVertexArray(vao);
glDrawArrays(GL_TRIANGLES, 0, 6);
glEnable(GL_CULL_FACE);
}