RenderTargetCircle.java 文件源码

public void render(double size, float partialTicks) {
    double renderRotationAngle = oldRotationAngle + (rotationAngle - oldRotationAngle) * partialTicks;
    BufferBuilder wr = Tessellator.getInstance().getBuffer();

    GL11.glPushMatrix();
    GL11.glEnable(GL12.GL_RESCALE_NORMAL);

    // GL11.glLineWidth((float)size * 20F);
    GL11.glEnable(GL11.GL_LINE_SMOOTH);

    GL11.glRotatef((float) renderRotationAngle, 0, 0, 1);
    for (int j = 0; j < 2; j++) {
        wr.begin(GL11.GL_TRIANGLE_STRIP, DefaultVertexFormats.POSITION);
        for (int i = 0; i < PneumaticCraftUtils.circlePoints / 4; i++) {
            wr.pos(PneumaticCraftUtils.cos[i] * size, PneumaticCraftUtils.sin[i] * size, 0).endVertex();
            wr.pos(PneumaticCraftUtils.cos[i] * (size + 0.1D), PneumaticCraftUtils.sin[i] * (size + 0.1D), 0).endVertex();
        }
        Tessellator.getInstance().draw();

        if (renderAsTagged) {
            GL11.glColor4d(1, 0, 0, 1);
            wr.begin(GL11.GL_LINE_LOOP, DefaultVertexFormats.POSITION);
            for (int i = 0; i < PneumaticCraftUtils.circlePoints / 4; i++) {
                wr.pos(PneumaticCraftUtils.cos[i] * size, PneumaticCraftUtils.sin[i] * size, 0).endVertex();
            }
            for (int i = PneumaticCraftUtils.circlePoints / 4 - 1; i >= 0; i--) {
                wr.pos(PneumaticCraftUtils.cos[i] * (size + 0.1D), PneumaticCraftUtils.sin[i] * (size + 0.1D), 0).endVertex();
            }
            Tessellator.getInstance().draw();
            GL11.glColor4d(1, 1, 0, 0.5);
        }

        GL11.glRotatef(180, 0, 0, 1);
    }

    GL11.glDisable(GL11.GL_LINE_SMOOTH);
    GL11.glDisable(GL12.GL_RESCALE_NORMAL);
    GL11.glPopMatrix();
}